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Basic Linux MCQ

1. To lock an account, you can use the usermod command with the ____ option.

-d

-L

-p

Answer

Correct Answer: -L

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2. To define an additional field in datasheet view, tap or click the ____ column heading.

Add Field

Insert Field

New Field

Click to Add

Answer

Correct Answer: Click to Add

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3. To create or edit a user cron table, you can use the ____ option to the crontab command.

None of these

Answer

Correct Answer: e

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4. Every computer contains a(n) ____ to send and receive data from other computers over a network.

UNICEF

INTERPOL

UNESCO

NIC

Answer

Correct Answer: NIC

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5. ____________ is a script or a tool that obtains privileges of a root?

Superuser

Subuser

Sudo command

None of these

Answer

Correct Answer: Superuser

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6. ____ components define the file system on unix/linux.

Four

Volume Bitmap

Two

Data

Answer

Correct Answer: Four

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7. When using the chmod command, the mode rwx can be represented by the number ____.

Answer

Correct Answer: 7

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8. Unix and linux are operating systems designed to run on ________.

Servers.

Smart phones.

non-mobile clients.

Mobile clients.

Answer

Correct Answer: Servers.

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9. To send a print job to a printer, you must first use the ____ command and specify what to print.

Answer

Correct Answer: Lp

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10. The _______ command will print a list of the commands that you've previously executed.

List

Eval

History

Exec

Answer

Correct Answer: History

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11. You can redirect a file to the standard input of a command using the ____ metacharacter.

Answer

Correct Answer: <

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12. To search all man pages? name sections for the keyword less, you would type ______________ less.

Whatis

History

Less

Locate

Answer

Correct Answer: Whatis

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13. The bind documentation consist of ____ chapters.

Eight

Night

Six

Five

Answer

Correct Answer: Eight

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14. The ______________ command can be used to see network interfaces.

Ifconfig

Configuring

Interface

None of these

Answer

Correct Answer: Ifconfig

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15. The ____ is the prompt symbol traditionally associated with ordinary users.

Dollar sign ($)

Pound sign (#)

Tilde (~)

Answer

Correct Answer: Dollar sign ($)

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16. Stephen bourne at at&t bell labs developed the ____ shell as the first unix command processor.

Bourne

Bash

Multiuser

None of these

Answer

Correct Answer: Bourne

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17. When you start vim, you are in ____ mode automatically.

Extended

Line

Insert

Command

Answer

Correct Answer: Command

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18. The ____ command prints a listing of environment and configuration variables.

Printenv

Printvar

Printf

Answer

Correct Answer: Printenv

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19. You want to extract the contents from an rpm package. Which command do you use?You want to extract the contents from an rpm package. Which command do you use?

Rpm --updaterpm --update

Rpm -ivh --forcerpm -ivh --force

Rpm --reinstallrpm --reinstall

Rpm2cpio

Answer

Correct Answer: Rpm2cpio

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20. What is the difference between the apt remove and apt autoremove commands?What is the difference between the apt remove and apt autoremove commands?

The apt remove command is a link to apt autoremove, so there are no differences. The apt remove command is a link to apt autoremove, so there are no differences.

Both uninstall software. The apt autoremove command also uninstalls the dependencies.Both uninstall software. The apt autoremove command also uninstalls the dependencies.

Both uninstall software. The apt remove command also uninstalls the dependencies.Both uninstall software. The apt remove command also uninstalls the dependencies.

The apt autoremove command is a system service that routinely removes unused software packages.

Answer

Correct Answer: Both uninstall software. The apt autoremove command also uninstalls the dependencies.Both uninstall software. The apt autoremove command also uninstalls the dependencies.

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21. The object that systemd uses to manage services is called a _ file.

Unit

Service

Single

Process

Answer

Correct Answer: Unit

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22. Which of these features is missing from the Bash Language?

Associative arrays.

Extened regular expressions.

Debug traps.

Object orientation

Answer

Correct Answer: Object orientation

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23. Using alternation in a POSIX-extended regular expression, which numbers would this pattern match? ^(([0-9][0-9]?)|(2[0-9][0-9]))$

0-99 and 200-299

0-99

200-299

0-299

Answer

Correct Answer: 0-99 and 200-299

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24. What would be in out.txt?

The content of in.txt.

The output from the command line.

Nothing, because you cannot redirect from a file (in.txt) to another file (out.txt). You can redirect only from a command to a file.

Nothing, The redirect will create a new empty file, but there will not be any output from the cat command to redirect.

Answer

Correct Answer: The content of in.txt.

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25. What is the difference between reading the list of disk partitions from /proc/partitions and getting it using fdisk -l?

/proc/partitions represents the disk partition table more accurately than fdisk -l

/proc/partitions shows only mounted drives. fdisk -l shows all drivers.

There is no difference between the two, and both lists contain the same data.

/proc/partitions is the kernel's list of partitions held in ram. fdisk -l reads the partition table from the drive itself.

Answer

Correct Answer: /proc/partitions is the kernel's list of partitions held in ram. fdisk -l reads the partition table from the drive itself.

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26. With GNU tools such as a GNU grep, awk, and sed, what is the difference between basic regular expressions (BREs) and extended regular expressions (EREs)?

EREs can match the groups.

EREs support occurrence operators.

ERE's support alternation.

Only the syntax differs.

Answer

Correct Answer: Only the syntax differs.

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27. When installing a downloaded package on the RedHat-based distribution manual using RPM, what may you have to do first?

Compile the package source code.

Download all dependencies and install them before installing the desired package.

Agree to an end-user license agreement.

Provide the --resolve option so RPM resolves all packages dependency.

Answer

Correct Answer: Download all dependencies and install them before installing the desired package.

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28. What do you need to do before you can perform SSH passwordless logins?

Generate RSA or DSA key pairs using ssh-keygen.

Change the remote user's password.

Create a local SSL certificate.

Change the remote SSH configure to allow it.

Answer

Correct Answer: Generate RSA or DSA key pairs using ssh-keygen.

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29. What is the purpose of a Mail Transport Agent (MTA)?

It transports the mail from user's computer to the mail server.

It accepts mail and adds it to the mail queue for further processing.

It stores the mail in a mail queue waiting for the MUA to download it.

It transports mail from one mail server to another.

Answer

Correct Answer: It transports mail from one mail server to another.

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30. To run CGI scripts with Apache, you need to _.

Compile the script with a CGI compiler

Make the script executable

Make the script executable and set the httpd_enable_cgi SELinux boolean

Change the ownership of the script to Apache

Answer

Correct Answer: Make the script executable and set the httpd_enable_cgi SELinux boolean

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31. Using backreferences in a POSIX regular expression, which word would this pattern match? (ss).*\1

Addressee

Possess

Barrenness

Successfully

Answer

Correct Answer: Possess

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32. What is the difference between these two lines of code? echo "data" | tee -a file.txt echo "data" >> file.txt

The first line will append the word data to file.txt and output it on the screen. The second line will append the word data only to file.txt.

They are the same.

The first line will append the word data to file.txt and there will be no output on the screen. The second line will output the word data on the screen and append it to file.txt

Both lines will overwrite file.txt with the word data.

Answer

Correct Answer: The first line will append the word data to file.txt and output it on the screen. The second line will append the word data only to file.txt.

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33. What is the difference the == and =~ comparison operators when used in BASH double square bracket if conditionals?

The == operator performs a string comparison; =~ performs a regex comparison.

The == operator performs a string comparison; =~ performs a glob pattern comparison.

The =~ operator performs a string comparison; == performs a regex comparison.

There is no =~ operator in BASH if conditionals.

Answer

Correct Answer: The == operator performs a string comparison; =~ performs a regex comparison.

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34. What tool Should you use to replace a physical volum in LVM?

Lvcopy

Tar

Pvmove

Answer

Correct Answer: Pvmove

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35. What is the command to create an associative array in Bash?

Declare -a

Aarray

Array -a

Declare -A

Answer

Correct Answer: Declare -A

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36. What is the difference between the whoami and logname commands?

Whoami and logname provide the same information.

Whoami tells who are you currently, and logname tells who you were when you logged in initially.

Logname specifies the name of the login log file, and whoami prints the logged in username.

Whoami shows you who logged in as initially, and logname shows who are you currently.

Answer

Correct Answer: Whoami tells who are you currently, and logname tells who you were when you logged in initially.

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37. Most commands that support SELinux use which option to display SELinux security context?

-S

--selinux

--MAC

-Z

Answer

Correct Answer: -Z

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38. What will not happen if you run the make command without parameters?

It will clean up all previously generated binaries and perform a new build.

It will run rules of compilation and building.

It will look for a file called makefile in your current directory.

It will build only programs that need to be rebuilt.

Answer

Correct Answer: It will clean up all previously generated binaries and perform a new build.

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39. Which choice is a Network Manager tool used to configure network connections from the GUI?

Nmcli

Onmtui

Nm-connection-editor

Answer

Correct Answer: Nm-connection-editor

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40. An rsyslogd filter determines which items in a log file to act on. What is it made up of?

A facility and an action

A filter and an action

A facility and a priority

A filter and a priority

Answer

Correct Answer: A filter and an action

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41. What issue might a user have when they mount a filesystem by partition path such as /dev/sdal in the /etc/fstab file?

The device order may change on boot, resulting in a system that will not boot properly.

The user may run out of device letters.

There are no issues with referring to partitions by their partition path.

It is more difficult identifying mounted devices by partition path.

Answer

Correct Answer: The device order may change on boot, resulting in a system that will not boot properly.

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42. What will this command print? echo "Thu Jun 4 15:45:45 PDT 2020" | cut -f3 -d" "

It will print nothing.

Thu Jun 4 15:45:45 PDT 2020

0.6567708333333333

Answer

Correct Answer: 4

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43. How does TCP Wrappers differ from a firewall?

Firewalls are only service specific, whereas TCP Wrappers can block all traffic.

TCP Wrappers works at the network layer, so it blocks traffic before the firewall even sees it.

Firewalls easily spawn commands to operate on connection data, whereas TCP Wrappers cannot.

TCP Wrappers works at the application layer, so it can make access decisions on encrypted data.

Answer

Correct Answer: TCP Wrappers works at the application layer, so it can make access decisions on encrypted data.

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44. To elevate privileges using the sudo command, a user must _.

Enter the root user's password

Enter their own password

Enter the sudo user's password

Change to the root group

Answer

Correct Answer: Enter their own password

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45. What would happen if you have a script file named script that takes a long time to complete, and you type nohup ./script & in the command line?

The script will remain running in the background even if you reboot the system.

The script will run in your terminal and you will not be able to do anything until it completes.

The script will run in the background until you end the session.

The script will run in the background and will continue running even if you end the session.

Answer

Correct Answer: The script will run in the background until you end the session.

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46. You can set Linux group passwords using which command?

Gpasswd

Passwd

Editsam

Grouppass

Answer

Correct Answer: Gpasswd

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47. What would you type to list all systemd service unit files, whether they are enabled or not?

Systemctl list-services.

Chkconfig --list-all

Systemctl list-unit-files -at service

Systemctl list-unit-files -t service

Answer

Correct Answer: Systemctl list-unit-files -at service

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48. To change the priority of multiple swap partitions, which file would you edit?

/proc/swapiness

/etc/fstab

/etc/mounts

/etc/swaps

Answer

Correct Answer: /etc/fstab

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49. What does this command string do? find / -size -10K -exec ls -l {} \;

It finds all files larger than 10k and long lists them using the ls command.

It finds all files of size 10k using ls -l and hands them off to the find command to display.

It finds all files in the / directory of size 10k and long lists them.

It finds all files in the file system smaller than 10k and long lists them using the ls command.

Answer

Correct Answer: It finds all files in the file system smaller than 10k and long lists them using the ls command.

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50. Which kernel module do you need to load to use interface bonding?

Bonding.

Team.

Netbond.

Bond.

Answer

Correct Answer: Bonding.

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51. What would this sed command do? sed -E 's/[a-Z]{4}/(&)/' textfile.txt

It would substitute the letter with an ampersand (&).

It would replace all letters in the textfile.txt file with ampersand (&).

It would replace the first four letters with an ampersand (&).

It would place parentheses around the first four letters of each line of textfile.txt.

Answer

Correct Answer: It would replace the first four letters with an ampersand (&).

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52. Extending an LVM volume group does what to the formatted filesystem?

It prepares the filesystem for use by defragmenting it.

It resizes the filesystem to match the volume group size.

It does nothing.

It remounts the filesystem with the new size.

Answer

Correct Answer: It does nothing.

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53. Why might would you use the usermod command ?

To log out a user

To lock a user's account

To change global user account settings

To set a user's password

Answer

Correct Answer: To change global user account settings

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54. What is the job of the NetworkManager daemon?

It is a graphical tool that manages network connections, including bonding and wireless networks.

It is a security service that manages user access control of local network-aware services.

It attempts to keep an active network connection available at all times.

It is a command-line tool that manages network connections.

Answer

Correct Answer: It is a command-line tool that manages network connections.

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55. To search from the current cursor position up to the beginning of the file using VIM, type _ and then the search criteria.

/search

Answer

Correct Answer: ?

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56. To configure the Kerberos client, which command should you use to import the keytab file?

Krb5-workstation

Ktutil

Pam_krb5

Kdb5_util

Answer

Correct Answer: Ktutil

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57. When configuring a Samba share, how would the engineering group be specified in the smb.conf?

Samba uses Linux operating system groups from the /etc/group file; just specify the group name.

It would be preceded by a percent sign (%), such as %engineers.

Use the group name by itself; Samba checks for its existence.

It would be preceded by an @ symbol, such as @engineering.

Answer

Correct Answer: It would be preceded by an @ symbol, such as @engineering.

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58. In an extended regular expression, you would use (pattern){3} to match three instances of the pattern. How would you match the same thing with an extended glob?

3(pattern)

{0,3}(pattern}

Occurrence quantifiers are not supported in Bash's version of extended globs, so this is not possible.

{3}(pattern})

Answer

Correct Answer: Occurrence quantifiers are not supported in Bash's version of extended globs, so this is not possible.

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59. What is the /etc/hosts file used for?

Resolving the local name

Blocking sites using iptables

Setting the hostname

Configuring DNS name servers

Answer

Correct Answer: Configuring DNS name servers

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60. You send an email to a remote client using the following syntax. What will be in the body of the email?

"This is a remote test"

the date, the time, and the words "This is a remote test"

The email subject shows "This is a remote test" but the body of the email will be empty.

The current date and time

Answer

Correct Answer: The current date and time

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61. What NFS option allows the root user to access NFS shares as the root user?

No_admin_squash

No_root_squash

Allow_root_access

All_squash

Answer

Correct Answer: No_root_squash

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62. What is not inherited by child process?

Shell aliases

Userid

Environmental variables

Scheduling priority

Answer

Correct Answer: Shell aliases

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63. To remove all ACLs from a directory , use setfacl with which options?

-d

-k

-b

-x

Answer

Correct Answer: -b

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64. What is one major difference between brace expansion and globs?

Globs create a list; brace expansion matches pattern.

Brace expansion requires files to exist; globs do not.

Brace expansion creates a list; globs match the list of pathnames.

Globs get processes first and brace expansion later.

Answer

Correct Answer: Brace expansion creates a list; globs match the list of pathnames.

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65. What is a major advantage of using Logical Volume Management (LVM)?

Access to a drive is faster than with standard partitions.

Volumes can be resized smaller without unmounting them.

Repairing filesystem errors is easier than with standard partitions.

Volumes can be resized even if the free space is not contiguous.

Answer

Correct Answer: Volumes can be resized even if the free space is not contiguous.

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66. When a user deletes a file using the rm command, Linux will _.

Always ask for confirmation

Back up the file before it deletes the file

Ask for confirmation if configured to do so

Never ask for confirmation

Answer

Correct Answer: Ask for confirmation if configured to do so

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67. Why is the passwd command able to modify the /etc/passwd file?

The kernel identifies it as one of the names of extended commands.

It has the same name as the file it modifies.

It has the SUID permission mode and is owned by root.

It is a system administration command.

Answer

Correct Answer: It has the SUID permission mode and is owned by root.

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68. In the Bash shell, what is the difference between piping into | and piping into |&?

Piping into | pipes both stdout and stderr. Piping into |& pipes only stderr.

Piping into | pipes stdout. Piping into |& pipes stdout and stderr.

Piping into | pipes both stdout and stderr. Piping into |& pipes only stdout.

Piping into | pipes stdout. Piping into |& pipes all open file descriptors.

Answer

Correct Answer: Piping into | pipes stdout. Piping into |& pipes stdout and stderr.

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69. Why doesn't passwd -l keep a user from logging in via other methods?

The passwd command is not used for locking passwords.

There is no password -l option.

It locks only the password, not the account, so users can still authenticate with keys or other methods.

It does lock the account, keeping users from logging in even if they are using other authentication methods.

Answer

Correct Answer: It locks only the password, not the account, so users can still authenticate with keys or other methods.

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70. You are managing an Apache web server on a system using SELinux. By default it cannot read personal webpages in users' home directories. What SELinux boolean would you set to allow this?

Apache_enable_homedirs

Httpd_enable_userdirs

Httpd_enable_homedirs

Httpd_enable_userhome_dirs

Answer

Correct Answer: Httpd_enable_homedirs

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71. Ifconfig has been deprecated. What command is now recommended for changing IP addresses in the live config?

Netconf

Ipconfig

Ipman

Answer

Correct Answer: Ip

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72. When would this system cron job run its task? 0 1 \* \* \*

Every minute of the hour

Every hour of every day

Every day at 1:00 AM

Only on Mondays

Answer

Correct Answer: Every day at 1:00 AM

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73. What command would you use to resize an LVM volume group to include an additional physical volume?

Vgadd

Vgresize

Vgappend

Vgextend

Answer

Correct Answer: Vgextend

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74. In a systemd-based OS, you can change the system hostname by editing /etc/hostname manually and then doing what?

Restart dhcpd.

Run /etc/hostname.

Nothing, the system notices automatically.

Notify systemd to update it by restarting the systemd-hostnamed service.

Answer

Correct Answer: Nothing, the system notices automatically.

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75. When archiving files, which command will preserve all file attributes including ACLs and SELinux security context?

Zip

Tar

76. What character class is equal to this set? [0-9]

[[:alnum:]]

[[:digit:]]

[[:alpha:]]

[[:num:]]

Answer

Correct Answer: [[:digit:]]

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77. Packages can be downloaded but not installed with yum or dnf by specifying which option?

None of these answers. yum does not support downloading packages without installing them.

--downloaddir

-d

--downloadonly

Answer

Correct Answer: --downloadonly

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78. Assume the variable myNumber holds a string consisting of 10 digits. What will this command output? echo \$myNumber | sed -e 's/^[[:digit:]][[:digit:]][[:digit:]]/(&)/g'

It will only match digits—and since the string has only digits, the command will output the same number without changes.

It will output the same 10-digit number, but every digit will be inside parentheses.

It will output the entire 10-digit number inside parentheses.

It will output the same 10-digit number, but the first 3 digits will be inside parentheses.

Answer

Correct Answer: It will output the same 10-digit number, but the first 3 digits will be inside parentheses.

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79. What does the /etc/nsswitch.conf file manage?

Priority of one DNS server over another

Per network interface DNS server configuration

Alternative DNS services

Sources for name service information

Answer

Correct Answer: Sources for name service information

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80. What is the key difference between a redirect (>) and piping to the tee command?

The tee command sends output only to STDOUT and STDERR.

A redirect sends output to STDOUT and a file, whereas a tee sends output only to STDOUT.

Nothing, they are the same.

The tee command sends output to STDOUT and a file, whereas a redirect sends output only to a file.

Answer

Correct Answer: The tee command sends output to STDOUT and a file, whereas a redirect sends output only to a file.

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81. A backup drive was created using dd to make a bit-for-bit copy. When the drive is inserted into an iSCSI target before it is booted up, the data appears to be missing. What happened?

The backup drive is corrupted and needs to be re-created.

When the backup drive was duplicates, the label was as well. When booted, the system mounted the old duplicates drive by its identical label.

There is a conflict between the physical location of the backup drive and the original drive.

The backup process went wrong, and the old drive was duplicates over the original drive.

Answer

Correct Answer: When the backup drive was duplicates, the label was as well. When booted, the system mounted the old duplicates drive by its identical label.

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82. What command is used to determine the amount of disk usage for a directory?

Find

Fdisk

Answer

Correct Answer: Du

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83. The ssh-copy-id command copies _ to the remote host.

Both private and public keys

The ssh public key

The ssh private key

A fingerprint file

Answer

Correct Answer: The ssh public key

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84. Which command in Bash executes the last line in the shell history that starts with ls?

!ls

Answer

Correct Answer: !ls

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85. What would this command output? ps -e --format uid,pid,ppid,%cpu,cmd

The user ID, process ID, parent process ID, CPU usage, and command name of a process

The user ID, group ID, parent process ID, CPU usage, and command name of a process

The UUID, process ID, parent process ID, CPU usage, and command name of a process

All of these answers

Answer

Correct Answer: The user ID, process ID, parent process ID, CPU usage, and command name of a process

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86. You want to resolve a long list of DNS names using dig. What should you do?

Create a text file including all names and use the -f option of dig.

Type in each query manually.

Write a shell script to send multiple dig queries to the DNS server.

Save the DNS names in an SQL database and process it with dig.

Answer

Correct Answer: Create a text file including all names and use the -f option of dig.

Note: This Question is unanswered, help us to find answer for this one

87. How would you describe PCP (Performance Co-Pilot)?

It is an application testing suite used to profile programming code.

It is a local command used for monitoring local system resources in real time.

It is a set of tools, services, and libraries for gathering and analyzing performance measures.

It is a tool designed to change system configuration for purposes of optimization.

Answer

Correct Answer: It is a set of tools, services, and libraries for gathering and analyzing performance measures.

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88. Which command will tell you how long a system has been running?

Log

Uptime

Runtime

Access

Answer

Correct Answer: Uptime

Note: This Question is unanswered, help us to find answer for this one

89. Which command allows you to do packet analysis from the command line?

Wireshark

Ethtool

Netstat

Tcpdump

Answer

Correct Answer: Tcpdump

Note: This Question is unanswered, help us to find answer for this one

90. What would this locate command show? locate --regexp '^/usr.pixmaps.jpg$'

All files in a directory named pixmaps

All files ending in

All file paths that start with

All file paths that include

Answer

Correct Answer: All file paths that start with

Note: This Question is unanswered, help us to find answer for this one

91. What does this command string do? find / -size +10M -exec ls -l {} ;

It finds all files using ls -l and hands them off to the find command to display.

It finds all files older than 10 minutes and long lists them using the ls command.

It finds all files larger than 10 MB and long lists them using the ls command.

It uses the ls command to find all files in the filesystem matching the {} wildcard.

Answer

Correct Answer: It finds all files larger than 10 MB and long lists them using the ls command.

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92. When using iproute2, how do you show routing information for an IPv6 network?

Route -ipv6

Route

Ip -6 route show

Ip route show

Answer

Correct Answer: Ip -6 route show

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93. Linux file access control lists (ACLs) are _.

Discretionary access control system permissions layered over standard Linux permissions

Mandatory access control system permissions layered over standard Linux permissions

A type of firewall for Linux

The same as standard Linux permissions

Answer

Correct Answer: Discretionary access control system permissions layered over standard Linux permissions

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94. To mount a drive by its ID, what command would you use first to retrieve it?

Df -h

Listid

Ls -l

Blkid

Answer

Correct Answer: Blkid

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95. Linux is an example of a(n) ______.

Operating system

Broswer

Word processing software

Photo Editor

Answer

Correct Answer: Operating system

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96. ____ gives the owner read, write, and execute permissions.

Chmod 755

Compiler

Pound (#) symbol

Symbolic name

Answer

Correct Answer: Chmod 755

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97. The core component of the gui in linux is referred to as ____.

GNOME

KDE

Red Hat

X Windows

Answer

Correct Answer: X Windows

Note: This Question is unanswered, help us to find answer for this one

98. The location of users' default shells is stored in the ______ file.

/etc/passwd

/etc/group

/etc/gshadow

/etc/shadow

Answer

Correct Answer: /etc/passwd

Note: This Question is unanswered, help us to find answer for this one

99. The main characteristic of ____ is that its source code is published with the software.

Shareware

Freeware

Closed source software

Open source software

Answer

Correct Answer: Open source software

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100. The ____ is where directories and files are stored on a disk drive.

Kali Linux

Data block

Inode blocks

Logical

Answer

Correct Answer: Data block

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101. ____ is a freely available version of x windows used in many linux distributions.

X.org

XFree

FreeX86

XFree86

Answer

Correct Answer: XFree86

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102. When you append a(n) ____ to a command, the command is run in a background process.

Answer

Correct Answer: &

Note: This Question is unanswered, help us to find answer for this one

103. To move from the /home/joe/test/data to the /home/joe directory, use the ____ command.

Cd ..

Cd ../..

/home/joe

Answer

Correct Answer: Cd ../..

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104. The unix/linux shell acts as a(n) ____ when reading script files.

Compiler

Interpreter

Assembler

Linker

Answer

Correct Answer: Interpreter

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105. The ____ function within the awk command is used to format output.

Comm

Uniq

Printf

Awk

Answer

Correct Answer: Printf

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106. By default, pr formats the specified files into single-column pages of ____ lines.

-c

-v

Answer

Correct Answer: 66

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107. By default, all print jobs have a priority of ____.

-50

100

Answer

Correct Answer: 50

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108. The line in the script for setting the bash shell is: ____.

Your home

#!/bin/bash

The design process

Colons ( :

Answer

Correct Answer: #!/bin/bash

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109. The root of a file system is denoted by the ____.

Dot

Forward slash

Backward slash

Both b and c

Answer

Correct Answer: Forward slash

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110. You can type more than one command on the command line by separating commands with a ____.

Semicolon (;)

Pound (#) symbol

/usr

History

Answer

Correct Answer: Semicolon (;)

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111. In linux most system configuration files are stored in the ____ directory.

/etc

/home

/dev

/var

Answer

Correct Answer: /etc

Note: This Question is unanswered, help us to find answer for this one

112. To view a list of files and their type, use the ____ switch to the ls command.

-T

-L

-F

-l

Answer

Correct Answer: -F

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113. To display the contents of a file called data, use the command ____.

Disp data

Ls data

Ls -l data

Cat data

Answer

Correct Answer: Cat data

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114. The section of an inode that stores permissions is called the ____ of the file.

Mode

Median

Mean

All of these

Answer

Correct Answer: Mode

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115. The fastest method to search for files in the linux directory tree is to use the ____ command.

Find

Locate

Answer

Correct Answer: Locate

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116. Solaris, hp-ux and aix are all ____ of unix.

Versions

Flavors

Types

Instances

Answer

Correct Answer: Flavors

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117. The _____ command displays information about the linux kernel:

Kern

Uname

Real

Linux

Answer

Correct Answer: Uname

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118. The ____ filesystem contains most of the operating system files.

Boot

Data

Mnt

Root

Answer

Correct Answer: Root

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119. The ____ command displays the arp table and is used to modify it.

Alias

Dsniff

Arp

/etc/securetty

Answer

Correct Answer: Arp

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120. The ____ command can be used to provide a long listing for each file in a certain directory.

Ls -T

Ls -F

Ls -L

Ls -l

Answer

Correct Answer: Ls -l

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121. You can type the _____ command, with no arguments, to learn your current username and nothing more?

Whoami

False

True

The su command Logging into the root account The sudo command

Answer

Correct Answer: Whoami

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122. You can execute ____ main types of linux commands.

Three

Four

Five

Sixth

Answer

Correct Answer: Three

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123. The ____ directory contains the kernel (operating system) images.

Mkdir

/bin

/boot

/etc

Answer

Correct Answer: /boot

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124. You can create user accounts on the linux system by using the ____ command.

Uadd

Usercreate

Adduser

Useradd

Answer

Correct Answer: Useradd

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125. The early standard linux file system was ____.

Volume Bitmap

Four

Ext2

/etc

Answer

Correct Answer: Ext2

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126. Most files on a linux system that contain configuration information are ____ files.

System

Text

127. Logic structures are also called ____ structures.

Control

True

Filler

Syntax

Answer

Correct Answer: Control

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128. Linux provides the foundation for the ____ operating system.

Snow Leopard

Vista

Android

Solaris

Answer

Correct Answer: Android

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129. Kali is explaining her request. she is working on the ___________ of her message.

Conclusion

Closing

Introduction

Body

Opening

Answer

Correct Answer: Body

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130. In linux, the three levels of file access are , , and .

Owner; group; others

Owner; group; administrator

Administrator; owner others

Owner; domain; group

Answer

Correct Answer: Owner; group; others

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131. In linux, the native file system is the ____, which is installed by default.

Swap

Forward slash (/)

/home

Ext fs

Answer

Correct Answer: Ext fs

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132. If a source file contains ____ errors, it cannot be converted into an executable file.

Syntax

Debugging

Compilation

Logic

Answer

Correct Answer: Syntax

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133. Everything in linux is a ____________.

Chomd

File

Answer

Correct Answer: File

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134. Errors on a filesystem are often referred to as filesystem ____ and are common on most filesystems.

Breaks

Corruption

Degradation

Failures

Answer

Correct Answer: Corruption

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135. Each hardware device must have its own ____ so that the operating system can detect it.

True

Regular

Driver

Services

Answer

Correct Answer: Driver

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136. A program’s high-level language statements are stored in a file called the ____ file.

Source

True

Syntax

False

Answer

Correct Answer: Source

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137. A ____ is used to refer to the user’s home directory.

Dot (.)

Dollar sign ($)

Forward slash (/)

Tilde (~)

Answer

Correct Answer: Tilde (~)

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138. A ____ is commonly packaged with a new computer system.

Security hole

Password

Rescue disk

Firewall

Answer

Correct Answer: Rescue disk

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139. What command can be used to forward the port 8000 on the local machine to the port 80 on a remote machine with IP 192.168.0.10?

forward -P8000 -R192.168.0.1:80 192.168.0.10

ssh -L 8000:192.168.0.1:80 192.168.0.10

ssh -P 8000 -R192.168.0.1:80 192.168.0.10

forward -L 8000:192.168.0.1:80 192.168.0.10

Answer

Correct Answer: ssh -L 8000:192.168.0.1:80 192.168.0.10

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140. Which of the following commands can you use to transfer files securely to and from remote systems?

ftp

scp

ttp

smv

Answer

Correct Answer: scp

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141. Which of the following files is executed by bash when it is launched as a non-login shell?

.bash_profile

.bashrc

.profile

.bash_exec

Answer

Correct Answer: .bashrc

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142. What is Postfix?

A POP3 server

A IMAP server

A mail client

A mail transfer agent

Answer

Correct Answer: A mail transfer agent

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143. Which of the following commands does not give useful system information?

cat /proc/cpuinfo

cat /proc/meminfo

cat /proc/modules

cat /proc/network

Answer

Correct Answer: cat /proc/network

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144. Which of the following is not a version control system used under Linux?

CVS

SVN

TFS

GIT

Answer

Correct Answer: TFS

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145. Which of the following files is used to configure filesystems shared via NFS?

/etc/nfs

/etc/networkshares

/etc/exports

/etc/nfs.conf

Answer

Correct Answer: /etc/exports

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146. What is LSB?

A distribution

A network packet analyzer

An ensemble of standards

A support contractor

Answer

Correct Answer: An ensemble of standards

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147. Which of the following desktop environments and window managers does not use GTK+?

GNOME

Xfce

KDE

None of the above

Answer

Correct Answer: KDE

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148. Which of the following is prohibited by the GPL under which Linux and most Linux-based software are licensed?

Running closed-source proprietary software

Static linking with closed-source proprietary software

Running software implementing Digital Rights Management

Modifying and redistributing the source code under a different name

Answer

Correct Answer: Static linking with closed-source proprietary software

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149. Which of the following is not a component of a Linux mail server or gateway?

sendmail

postfix

exim

mutt

Answer

Correct Answer: mutt

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150. What is the function of the curl command?

To transfer data using URL Syntax

To prepare a specially formatted text file for rich text printing

To control the printing queue of CUPS

To prepare the system for a heavy load

Answer

Correct Answer: To transfer data using URL Syntax

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151. What does the command "df -h" do?

Displays open files on the current filesystem

Displays filesystems usage in a human-readable way

Allows the user to send a message to all connected users

Starts an immediate shutdown

Answer

Correct Answer: Displays filesystems usage in a human-readable way

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152. What option should you use with LILO or GRUB to boot a Linux system in the maintenance mode, runlevel 1?

maintenance

single

runlevel=1

root

Answer

Correct Answer: single

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153. Which of the following commands allows you to watch the file /var/log/messages as it is written?

tail -f /var/log/messages

watch -f /var/log/messages

follow -f /var/log/messages

watch -5 /var/log/messages

Answer

Correct Answer: tail -f /var/log/messages

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154. Which of the following commands allows you to run a graphical application on the machine "remotemachine" while allowing you to control it from your system?

telnet -g remotemachine

xorg -server remotemachine --local

ssh -X remotemachine

vnc remotemachine

Answer

Correct Answer: ssh -X remotemachine

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155. What is the default port used by ssh?

Answer

Correct Answer: 22

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156. Which of the following commands is used to resume a process suspended with the Ctrl-Z shortcut?

suspend -a

Answer

Correct Answer: fg

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157. Which of the following command lines can be used as root to configure the first Ethernet card with the IP 192.168.0.1, and the default gateway as 192.168.0.10?

ifconfig eth0 192.168.0.1 netmask 255.255.255.0 && route add default gw 192.168.0.10

ifconfig en0 192.168.0.1 && gateway --default 192.168.0.10

netconfig -i 1 -ip 192.168.0.1 -gw 192.168.0.1

netconfig eth0 192.168.0.1 && gateway --default 192.168.0.10

Answer

Correct Answer: ifconfig eth0 192.168.0.1 netmask 255.255.255.0 && route add default gw 192.168.0.10

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158. Where are the configuration files for a scanning device located?

/etc/scanner/

/etc/sane.d/

/etc/scand/

/etc/conf/scanner/

Answer

Correct Answer: /etc/sane.d/

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159. Which of the following can not be done with the help of ssh?

Powering up or shutdown machine

Transferring files between two machines

Forwarding a port from one machine to another

None of the above

Answer

Correct Answer: None of the above

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160. On a Linux system without the Shadow Suite installed, user passwords are stored in _______.

/etc/passwd

/etc/password

/etc/users

/etc/shadow

Answer

Correct Answer: /etc/passwd

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161. Which of the following options of ln will allow you to create a symbolic link?

-l

--sym

-s

-0

Answer

Correct Answer: -s

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162. How do you update the last accessed time of a file?

access file

update file

touch file

utime file

Answer

Correct Answer: touch file

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163. What does the command "tar zxf latest.tgz" do?

Packs the zxf file into the latest.tgz archive

Prepares the file latest.tgz for network transmission

Decompresses and unpacks the latest.tgz archive

Creates an archive named latest.tgz from the files in the current directory

Answer

Correct Answer: Decompresses and unpacks the latest.tgz archive

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164. You want to show every line (with the file name and the line number) in the log files of a Ubuntu system that does NOT contain the string "info" (case insensitive). What is the proper command?

grep -n -string "info" /var/log/*

grep -i -n -v "info" -R /var/log/*

grep -c -h -n "info" -R /var/log/*

grep -f -n -v "info" -R /var/log/*

Answer

Correct Answer: grep -i -n -v "info" -R /var/log/*

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165. Which of the following file extensions is not used by a Linux distribution package management system?

.rpm

.deb

.pkg

.ebuild

Answer

Correct Answer: .pkg

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166. What is the de facto antivirus software for an e-mail server under Linux?

Avast!

AVG Anti-Virus

ClamAV

Norton Anti-Virus

Answer

Correct Answer: ClamAV

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167. CUPS is a _______.

Bucket-like system to store files and notes

Printing management system

Strategy game bundled with Linux distributions

Backup system

Answer

Correct Answer: Printing management system

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168. Which of the following utilities is used to change the priority of a process in the kernel's scheduler?

priority

resched

nice

Answer

Correct Answer: nice

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169. Which of the following addresses can be used to access the CUPS printer management system on the local machine?

http://localhost:128

http://localhost:631

http://127.0.0.1:228

http://127.0.0.1:638

Answer

Correct Answer: http://localhost:631

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170. Which of the following protocols is not encrypted?

ssh

ipsec

tcp

https

Answer

Correct Answer: tcp

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171. Which of the following virtualization solutions doesn't work on Linux x86?

Bochs

Xen

VMWare

Mac-on-Linux

Answer

Correct Answer: Mac-on-Linux

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172. What effect does a set sticky bit have on a file in a Linux system?

None

Tells the system to keep the text segment of the file in the swap for faster access

Does not allow the file to be deleted except by its owner or the superuser

Marks the file as executable

Answer

Correct Answer: None

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173. Which of the following is the most appropriate and fastest utility to use when regularly copying a slightly modified version of a big file, for example a video montage, to a backup server?

backup

rsync

scp

ftp

Answer

Correct Answer: rsync

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174. Which of the following utilities can you use for CCTV under Linux?

ZoneMinder

cctvd

spycam

axisd

Answer

Correct Answer: ZoneMinder

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175. Which of the following will be of no use for running a Windows program on a Linux system?

Wine

VirtualBox

VMWare Workstation

PearPC

Answer

Correct Answer: PearPC

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176. Which of the following commands will help you diagnose a software RAID system under Linux?

/sbin/raid --all

/sbin/mdadm --detail /dev/md0

/sbin/fdisk -a

/sbin/smartraid --status /dev/md0

Answer

Correct Answer: /sbin/mdadm --detail /dev/md0

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177. Which of the following utilities displays the RAM usage?

memory

free

Answer

Correct Answer: free

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178. What is LAMP?

A screen saver with built-in security

An acronym used to identify a commonly used free software solution stack

An application server

A distributed ray-tracing rendering software

Answer

Correct Answer: An acronym used to identify a commonly used free software solution stack

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179. With a umask set to 027, what is the initial mode for a newly created file?

664

422

027

640

Answer

Correct Answer: 640

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180. On a Debian GNU/Linux system, which of the following is a standard path to GRUB's configuration file?

/boot/grub/grub.cfg

/boot/grub.d/grub.conf

/etc/grub.conf

/etc/lilo.conf

Answer

Correct Answer: /boot/grub/grub.cfg

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181. Which of the following programs allows, under conditions, users to execute commands as root?

root

pfexec

sudo

super

Answer

Correct Answer: sudo

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182. Which of the following is not a Unix/Linux shell?

bash

zsh

efi-shell

Answer

Correct Answer: efi-shell

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183. What is the name of the driver specification used to print to PostScript printers?

PSP

PSPS

PPD

PPR

Answer

Correct Answer: PPD

Note: This Question is unanswered, help us to find answer for this one

184. Which of the following licenses is not GPL-compatible?

Netscape Public License

X11 License

ISC License

Modified BSD License

Answer

Correct Answer: Netscape Public License

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185. Which of the following software packages can you use to manage an Uninterruptible Power Supply (UPS) under Linux?

nut

upsd

powerd

kups

Answer

Correct Answer: nut

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186. Which command redirects all outputs from cmd to out.log with a bash terminal?

cmd out.log 2

cmd | redirect out.log

cat cmd out.log 2

cat cmd | redirect out.log

Answer

Correct Answer: cmd out.log 2

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187. How do you set an environment variable FOO with bash?

env FOO=bar

export FOO="bar"

var FOO="bar"

setvar FOO="bar"

Answer

Correct Answer: export FOO="bar"

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188. Which of the following is not a usual filename to be found in a user configuration directory for OpenSSH?

config

authorized_keys

known_hosts

id_rsa.public

Answer

Correct Answer: id_rsa.public

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189. What is Edubuntu?

A distribution meant for learning how to use Linux

A distribution aimed at college students

A distribution aimed at users aged 6 to 18

An ensemble of education software for Ubuntu

Answer

Correct Answer: A distribution aimed at users aged 6 to 18

Note: This Question is unanswered, help us to find answer for this one

190. Which of the following commands can be used in a script to check and repair the disk partition /dev/sda2 using the ext3 filesystem?

e3fsck -i -r -f /dev/sda2

fsck -f -p -y /dev/sda2

fsck.ext3 -t ext3 /dev/sda2

chkdsk -f -r -o /dev/sda2

Answer

Correct Answer: fsck -f -p -y /dev/sda2

Note: This Question is unanswered, help us to find answer for this one

191. Which command line utility allows you to control and monitor the health of hard disks?

smartctl

smartcheck

diskcheck

fdisk

Answer

Correct Answer: smartctl

Note: This Question is unanswered, help us to find answer for this one

192. Which of the following commands does not display active processes?

top

pstree

which

Answer

Correct Answer: which

Note: This Question is unanswered, help us to find answer for this one

193. Which of the following commands disables a site or virtual host in Apache under Debian/Ubuntu?

apache disable

apache-disable

httpd-dis

a2dissite

Answer

Correct Answer: a2dissite

Note: This Question is unanswered, help us to find answer for this one

194. As of Linux 2.6, what is the default sound system?

OSS

ALSA

PulseAudio

JACK

Answer

Correct Answer: ALSA

Note: This Question is unanswered, help us to find answer for this one

195. Which of the following rpm packages cannot be installed on an amd64 machine with the appropriate system?

xorg-x11-server-Xorg-1.6.3-4.i386.rpm

xorg-x11-server-Xorg-1.6.3-4.x86_64.rpm

OpenOffice_org-af-2.3.0.1.2-2.3.noarch.rpm

OpenOffice_org-writer-2.3.0.1.2-10.5.ppc.rpm

Answer

Correct Answer: OpenOffice_org-writer-2.3.0.1.2-10.5.ppc.rpm

Note: This Question is unanswered, help us to find answer for this one

196. Which of the following distributions can not be backed by a support contract from its vendor?

Mandriva

Fedora

Ubuntu

SuSE Linux Enterprise Desktop

Answer

Correct Answer: Fedora

Note: This Question is unanswered, help us to find answer for this one

197. Which of the following crontab lines sets up the execution of schdcmd every 1st and 15th of the month at 7:55 and 18:55?

* 1,15 7,18 55 * schdcmd

7:55,18:55 1,15 * * schdcmd

* * 55 7,18 1,15 schdcmd

55 7,18 1,15 * * schdcmd

Answer

Correct Answer: 55 7,18 1,15 * * schdcmd

Note: This Question is unanswered, help us to find answer for this one

198. Within the grub interface, which of the following commands do you issue to install the GRUB boot-loader to the Master Boot Record of the first IDE disk?

install (hd0,0)

root (hd0,0)

setup (hd0)

grub-install (hd0)

Answer

Correct Answer: setup (hd0)

Note: This Question is unanswered, help us to find answer for this one

199. Which of the following file systems can not be used for /?

ext3

ntfs

jfs

xfs

Answer

Correct Answer: ntfs

Note: This Question is unanswered, help us to find answer for this one

200. Under Linux, the user directories are usually stored in_______.

/Users/

/usr/

/home/

/export/home/

Answer

Correct Answer: /home/

Note: This Question is unanswered, help us to find answer for this one

201. Which of the following commands reconfigures Xorg on a Debian machine?

apt-get reconfigure xorg

dpkg-reconfigure xserver-xorg

xorg-config xserver

reconfigure /etc/X11/xorg.conf

Answer

Correct Answer: dpkg-reconfigure xserver-xorg

Note: This Question is unanswered, help us to find answer for this one

202. Which of the following commands allows you to specify the default file mode creation mask?

dmask

umask

fmask

cmask

Answer

Correct Answer: umask

Note: This Question is unanswered, help us to find answer for this one

203. Which of the following commands is not network-related?

dig

a2enmod

dpkg

ifconfig

Answer

Correct Answer: dpkg

Note: This Question is unanswered, help us to find answer for this one

204. Which of the following utilities will not help you convert a video from one format to another under Linux?

mencoder

transcode

ffmpeg

avconvert

Answer

Correct Answer: avconvert

Note: This Question is unanswered, help us to find answer for this one

205. Which of the following realtime systems uses Linux?

Wind River Real-Time Core

QNX

VxWorks

FreeRTOS

Answer

Correct Answer: Wind River Real-Time Core

Note: This Question is unanswered, help us to find answer for this one

206. Which of the following commands is used in conjunction with slocate?

find

which

updatedb

Answer

Correct Answer: updatedb

Note: This Question is unanswered, help us to find answer for this one

207. What is the interface used to allow user applications to use the video hardware without going through the X server called?

Direct Rendering Infrastructure

Double Rendering Architecture

X Rendering System

Direct Rendering System

Answer

Correct Answer: Direct Rendering Infrastructure

Note: This Question is unanswered, help us to find answer for this one

208. What is the command used to upgrade all installed packages on a machine running Ubuntu?

urpmi --auto-select && urpmi.update -a

emerge --update --deep world

emerge --sync

apt-get update && apt-get dist-upgrade

Answer

Correct Answer: apt-get update && apt-get dist-upgrade

Note: This Question is unanswered, help us to find answer for this one

209. Which of the following commands will not log you out of a bash terminal?

Ctrl-D

logout

exit

escape

Answer

Correct Answer: escape

Note: This Question is unanswered, help us to find answer for this one

210. Which of the following commands creates a new user along with its home directory and populates it with files from /etc/skel?

adduser -c /home/jdoe -p /etc/skel jdoe

useradd -mc "John Doe" jdoe

adduser -n "John Doe" jdoe

useradd -x /etc/skel -h /home/jdoe -n jdoe

Answer

Correct Answer: useradd -mc "John Doe" jdoe

Note: This Question is unanswered, help us to find answer for this one

211. Which of the following switches forces rm to ask for confirmation?

-a

-c

-i

-f

Answer

Correct Answer: -i

Note: This Question is unanswered, help us to find answer for this one

212. Which of the following is not a Groupware solution for Linux?

Zimbra

Scalix

Colabor

OpenChange

Answer

Correct Answer: Colabor

Note: This Question is unanswered, help us to find answer for this one

213. What is the command giving access to the help of an application?

help

docu

man

Each application has its own way.

Answer

Correct Answer: man

Note: This Question is unanswered, help us to find answer for this one

214. The ''rm'' command is used to:

remove a kernel module owned by you

run an M4 macro

mount a remote file system

delete a file

Answer

Correct Answer: delete a file

Note: This Question is unanswered, help us to find answer for this one

215. Which one is correct DNS Lookup Command ?

chmod

lt command

dig command

dnshost

nslookup

Answer

Correct Answer: dig command

Note: This Question is unanswered, help us to find answer for this one

216. Compress or decompress named file(s) ?

bzip

bzip2

gzip

Answer

Correct Answer: bzip2

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217. The default private generated by "ssh-keygen" is located at ___ and should have permissions _.

~/.ssh/id_rsa.pub, 644

~/.ssh/id_rsa, 600

~/.ssh/id_rsa.pub, 600

~/.ssh/id_rsa, 644

Answer

Correct Answer: ~/.ssh/id_rsa, 600

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218. The correct command to install a downloaded Debian package, "~/Downloads/mypackage.deb" is

(sudo) apt-get install "~/Downloads/mypackage.deb"

(sudo) debian-package --install "~/Downloads/mypackage.deb"

(sudo) dpkg -i "~/Downloads/mypackage.deb"

(sudo) apt-get install --local "~/Downloads/mypackage.deb"

Answer

Correct Answer: (sudo) dpkg -i "~/Downloads/mypackage.deb"

Note: This Question is unanswered, help us to find answer for this one

219. Correct form of Reverse DNS Lookups ?

nslookup -type=ns microsoft.com

nslookup microsoft.com

nslookup -type=mx microsoft.com

nslookup 134.170.185.46

Answer

Correct Answer: nslookup 134.170.185.46

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220. Which of these media players does not run on Linux ?

Winamp

amarok

Kodi

rythmbox

nightingale

Answer

Correct Answer: Winamp

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221. Command for Change file owner and group ?

chkconfig

chown

chroot

chmod

Answer

Correct Answer: chown

Note: This Question is unanswered, help us to find answer for this one

222. What is the correct value for (rwxrwxrwx) No restrictions on permissions. Anybody may do anything.

644

777

755

666

700

Answer

Correct Answer: 777

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223. Can you make hard links to directories just as you can to ordinary files?

Yes, but only in single user mode.

Sometimes, depending on file system restrictions.

No, that would corrupt the requirement that every file only has one parent directory.

Yes, there's no difference between hard linking files / directories.

Answer

Correct Answer: Sometimes, depending on file system restrictions.

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224. Which file would be returned by ls File[A5] ?

FileA

FileA5

none of these

FileAB

Answer

Correct Answer: FileA

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225. What will you get if you try to read from the pseudo-device /dev/zero?

An infinite string of nulls ('\0', ASCII 0x00).

Nothing.

An infinite string of zeroes ('0', ASCII 0x30).

An error (/dev/zero cannot be read from, only written to).

Answer

Correct Answer: An infinite string of nulls ('\0', ASCII 0x00).

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226. In BASH scripts the symbols "<<" indicate...

left shift

much less than

input redirection

rapid query

a "here" document

Answer

Correct Answer: a "here" document

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227. To block/allow regular users to send write messages to your session, you use:

block [-y|-n]

write -q

mesg

term -q

Answer

Correct Answer: mesg

Note: This Question is unanswered, help us to find answer for this one

228. newgrp will:

change user's group ID (GID)

change group's parameters

create a new group on the system

create a new group and potentially add users to it

Answer

Correct Answer: change user's group ID (GID)

Note: This Question is unanswered, help us to find answer for this one

229. Will tar extract information about file permissions?

Yes, only if "-p" specified.

Yes, only on NTFS volumns.

No.

Yes, only if it's root.

Yes, if "-p" specified or is root.

Answer

Correct Answer: Yes, if "-p" specified or is root.

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230. Can `ip` in iproute2 take multiple commands in a row?

Yes, using `ip -sequence`

Yes, using `ip --file`

Yes, using `ip -batch`

Yes, using `ip -f`

Answer

Correct Answer: Yes, using `ip -batch`

Note: This Question is unanswered, help us to find answer for this one

231. What file will show you how the kernel was started?

/proc/bootargs

/boot/grub/grub.conf

/boot/grub/menu.lst

/proc/cmdline

Answer

Correct Answer: /proc/cmdline

Note: This Question is unanswered, help us to find answer for this one

232. Apart from SIGKILL, which other signal cannot be caught nor ignored?

SIGXCPU

SIGTRAP

SIGSYS

SIGSTOP

SIGPWR

Answer

Correct Answer: SIGSTOP

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233. What is the default delimiter for the command "cut"?

Answer

Correct Answer:

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234. A user has a file called OriginalFile, and then creates a hard link to it by executing the following command (brackets not part of command): [ cp -l OriginalFile CopyOfFile ] Which of the following are true?

All of these are true

Deleting CopyOfFile will delete OriginalFile

Moving OriginalFile to a new directory will cause CopyOfFile to become a broken link

None of these are true

Editing CopyOfFile will affect OriginalFile

Answer

Correct Answer: Editing CopyOfFile will affect OriginalFile

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235. What is the result of echo '$MyVar' ?

MyVar

$MyVar

the value of $MyVar

Answer

Correct Answer: $MyVar

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236. modprobe -d:

deletes a module from the filesystem.

types debugging information regarding a module.

deletes a module from memory.

deactivate a module in memory.

specifies the directory where modules can be found.

Answer

Correct Answer: specifies the directory where modules can be found.

Note: This Question is unanswered, help us to find answer for this one

237. The equivalent to whatis command is:

man -f

apropos

what -a

Answer

Correct Answer: man -f

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238. What are the six fields of /etc/fstab?

Device, mount point, file system type, mount options, fsck pass number, dump frequency.

Six fields? There are only five: Device, mount point, mount options, and two more fields that are no longer used.

Device, mount point, mount options, file system type, fsck pass number, dump frequency.

Device, mount point, mount options, file system type, dump frequency, fsck pass number.

Device, mount point, file system type, mount options, dump frequency, fsck pass number.

Answer

Correct Answer: Device, mount point, file system type, mount options, dump frequency, fsck pass number.

Note: This Question is unanswered, help us to find answer for this one

239. in terms of system calls, when bash process executes cat </tmp/input command it does the following:

issues the exec system call to execute the cat program and then issues a system call to substitute standard input with /tmp/input

issues a system call to create a new copy of itself, in that copy it issues a system call to substitute standard input with /tmp/input and finally issues the exec system call to execute the cat program

issues a system call to create a new copy of itself, in that copy it issues a system call to close the lowest file descriptor, then issues a system call to open /tmp/input and finally issues the exec system call to execute the cat program

issues the exec system call to execute the cat program, then issues a system call to close the lowest file descriptor and finally issues a system call to open /tmp/input

Answer

Correct Answer: issues a system call to create a new copy of itself, in that copy it issues a system call to close the lowest file descriptor, then issues a system call to open /tmp/input and finally issues the exec system call to execute the cat program

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240. mklost+found:

creates a lost+found directory in the current working directory

creates a lost+found directory in the root directory /

is a configuration file for sendmail located in /var

is an invalid command

Answer

Correct Answer: creates a lost+found directory in the current working directory

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241. The ____ command will display LVM volume groups.

vgdisplay

vgl

lvshow

vgstatus

vglist

Answer

Correct Answer: vgdisplay

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242. The cksum command will read from standard input if:

=' is used

All of these

'-' is used

'.' is used

Answer

Correct Answer: '-' is used

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243. What does the command "set $(date)" do?

It parses the system date into command line parameters $1 - $6

It changes the order of the date fields

It displays the system date

It sets the system date

It displays the current system's setup date

Answer

Correct Answer: It parses the system date into command line parameters $1 - $6

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244. Which command will tell you how long a system has been up and running since it was last booted?

All answers are correct.

who -b

uptime

cat /proc/uptime

Answer

Correct Answer: All answers are correct.

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245. Which one of these lines will check if the directory 'foo' exists and create it if it doesn't?

if [ ! -d foo ]; then mkdir foo; fi

test -d foo || mkdir foo

All of them.

mkdir -p foo

All but one of them.

Answer

Correct Answer: All of them.

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246. what the "netstat -lx" command do?

Listing all LISTENING Connections

Listing all TCP Listening Ports

Listing all UDP Listening Ports

Listing all Listening Ports

Answer

Correct Answer: Listing all Listening Ports

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247. In POSIX-compatible shell, what will you see if you enter "echo foo*" when there are no files beginning with "foo" in the current directory?

foo

echo: No such file or directory.

foo*: No such file or directory.

foo*

Nothing.

Answer

Correct Answer: foo*

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248. To create hard-links instead of copies with the cp command, you use:

All of these

--cp

-l

--perm-link

Answer

Correct Answer: -l

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249. Which command is used for initializing physical volume(hard disk, or partition) for LVM usage?

pvcreate

pvinit

lvm -p create

pvck

pvmake

Answer

Correct Answer: pvcreate

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250. To format a device as an ext3 (journaled) Linux extended filesystem, you use the commands:

mkfs.ext2 -j

mkfs.ext3

all are correct

Answer

Correct Answer: all are correct

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251. As a non-privileged user, if you use 'nice', it will:

execute a command with a set priority (may be higher)

reshuffle directory entries, so ls will produce a pretty display

execute a command with lower priority

will lower already running background processes priority

Answer

Correct Answer: execute a command with lower priority

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252. If no filesystems are specified on the command line, and the _____ option is not specified, then the command "fsck" will default to checking filesystems in "/etc/fstab" serial order.

-A

-D

-B

-C

-E

Answer

Correct Answer: -A

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253. How are typical native code debuggers implemented?

By requesting the kernel scheduler to suspend the traced process and then analyzing its memory segments.

Using virtualization technology.

By loading traced program's code into the heap segment of the debugger which then acts as a virtual machine.

By a special system call that allows one process to control and trace execution of another.

Answer

Correct Answer: By a special system call that allows one process to control and trace execution of another.

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254. what the "netstat -ac 5 | grep tcp" command do?

Displaying Promiscuous mode with -ac switch, netstat print the selected information or refresh screen every five second. Default screen refresh in every second.

Showing Statistics by TCP Protocol

Displaying Service name with PID

Listing all UNIX Listening Ports

Showing Statistics by UDP Protocol

Answer

Correct Answer: Displaying Promiscuous mode with -ac switch, netstat print the selected information or refresh screen every five second. Default screen refresh in every second.

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255. Man pages are written using what markup language?

UTF-8

HTML

RTF

TROFF

PERLDOC

Answer

Correct Answer: TROFF

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256. Which of the following commands shows routing table information?

ip route get

routeshow

net stat

route --list

ip route show

Answer

Correct Answer: ip route show

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257. The ________ command can be used to "kill" the 'X server'.

Ctrl + X

Ctrl + D

Ctrl + Alt + Del

Ctrl + Shift + Bksp

Ctrl + Alt + Bksp

Answer

Correct Answer: Ctrl + Alt + Bksp

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258. You need which of the following access modes in order to cd to a system directory?

Answer

Correct Answer: x

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259. What does the Linux "yes" command do?

It outputs an infinite series of 'y's (or the word of your choice).

It returns the exit code 0 to indicate success (it's a synonym to the "true" command).

Nothing; it doesn't exist.

Answer

Correct Answer: It outputs an infinite series of 'y's (or the word of your choice).

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260. nfsstat will...

create or update remote NFS users from entries in the file /etc/nfsstat

activate kernel threads for the NFS (Network File System) kernel module

display an NFS user status on both server and client side systems

type statistics on NFS and remote procedure call (RPC) activity for both client and server systems

Answer

Correct Answer: type statistics on NFS and remote procedure call (RPC) activity for both client and server systems

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261. To do unlimited precision arithmetic calculations from the shell, you use:

cal

All of these

calc

Answer

Correct Answer: bc

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262. 'mv -u' will:

undo the last mv command performed on the same filesystem

will create a backup of the target so an 'undo' is possible

not remove a file or link if its modification date is the same as or newer than that of its replacement

will translate DOS formatted files to Unix format (e.g., will change end-of-line characters)

Answer

Correct Answer: not remove a file or link if its modification date is the same as or newer than that of its replacement

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263. Running "man --locale=LLL" instructs man to override the value of which of these functions?

local()

setlocale()

local(LLL)

whereami()

Answer

Correct Answer: setlocale()

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264. Which of the following is a way to update mlocate's index?

dbupdate

mlocate -u

dbmlocate

updatedb

find -mlocate

Answer

Correct Answer: updatedb

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265. The acronym WINE stands for:

Windows Emulator

Windows Environment

Wine is Not for Eunichs

Wine is not an Emulator

Answer

Correct Answer: Wine is not an Emulator

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266. what the "netstat -l" command do?

Listing all the LISTENING Ports of TCP and UDP connections

Listing UDP Ports connections

listing all active listening ports connections

Listing TCP Ports connections

Answer

Correct Answer: listing all active listening ports connections

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267. In the command 'mv source target', if source is a directory and target is an existing directory, the result will be to:

overwrite 'target' directory with 'source' directory

merge 'target' directory with 'source' directory

move 'source' directory to be a subdirectory of 'target' directory

move 'source' directory to be on same level in the directory tree as 'target' directory

Answer

Correct Answer: move 'source' directory to be a subdirectory of 'target' directory

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268. To format a device as a Linux second extended filesystem (ext2), you use the command:

mke2fs

mkfs.ext2

Both mke2fs and mkfs.ext2

Answer

Correct Answer: Both mke2fs and mkfs.ext2

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269. In a BASH script this command line parameter contains the scripts own name:

$NAME

Answer

Correct Answer: $0

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270. The backslash on the command line indicates

the end of a file

the root directory

a one-character escape

a regular expression search

a command pipe

Answer

Correct Answer: a one-character escape

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271. what the "netstat -a" command do?

Listing all LISTENING Connections

Listing all ports (both TCP and UDP)

Listing TCP Ports connections

Listing UDP Ports connections

Answer

Correct Answer: Listing all ports (both TCP and UDP)

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272. What happens if you try to write to /dev/null and /dev/zero?

Nothing.

You cannot write to /dev/null, only to /dev/zero.

You cannot write to /dev/zero, only to /dev/null.

You cannot write to either of them, only read from them.

Answer

Correct Answer: Nothing.

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273. In bash you can use these quote marks for command substitution.

double quotes " "

backslashes \ \

single quotes ' '

forward slashes / /

backquotes ` `

Answer

Correct Answer: backquotes ` `

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274. The user smith issued the egrep "^[[:upper:]]" words.txt command. What does this command do?

displays all lines in the words.txt file after translating lowercase letters to uppercase

displays all lines in the words.txt file that contain an uppercase letter

displays all lines in the words.txt file that begin with an uppercase letter

displays all lines in the words.txt file after translating uppercase letters to lowercase

Answer

Correct Answer: displays all lines in the words.txt file that begin with an uppercase letter

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275. Given that the ip command is installed, what is the effect of the command ip a ls

Command "ls" is unknown, try "ip addr help".

It lists the neighbours of the system on an IP network.

It lists the defined interfaces and the addresses associated with those interfaces.

Answer

Correct Answer: It lists the defined interfaces and the addresses associated with those interfaces.

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276. Which of the following files 'probably' contains the default "windows manager settings"?

/xinit/xinitrc

/X11/xinit/xinitrc

.xinitrc

/etc/X11/xinit/xinitrc

$HOME/.xinitrc

Answer

Correct Answer: /etc/X11/xinit/xinitrc

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277. What source control system does the Linux kernel use?

svn

bitkeeper

git

patches

cvs

Answer

Correct Answer: git

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278. Information about modules, like module dependency, and where certain types of modules reside in the filesystem, is found in:

/etc/modules.conf

/etc/modinfo.conf

/etc/infomod.conf

/etc/lsmod.conf

Answer

Correct Answer: /etc/modules.conf

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279. To send a file to the printer spool queue, you use the command:

spool

lpr

Answer

Correct Answer: lpr

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280. What program is launched by the kernel at system start up first?

/sbin/init

/etc/rc.d/rc.sysinit

/sbin/initial

/boot

/sbin/start

Answer

Correct Answer: /sbin/init

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281. How do you make a list of all filenames in the /tmp directory that the contain the text "user", regardless of case?

ls /tmp | find user

grep user /tmp

ls /tmp | grep user

ls /tmp : grep user

ls /tmp | grep -i user

Answer

Correct Answer: ls /tmp | grep -i user

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282. To write a message to all users (on their terminals) over a network, you use:

rwall

wall

rwrite

write

Answer

Correct Answer: wall

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283. rev will:

reverse the order of characters read from standard input and type the result stream of characters to standard output

review the networking status and alert on problems

type the system revision number to standard output

reverse the spin of a local disk drive

Answer

Correct Answer: reverse the order of characters read from standard input and type the result stream of characters to standard output

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284. How do you find all files in /etc which end in .conf?

find /etc -name "*.conf"

all of these

find /etc *.conf

Answer

Correct Answer: find /etc -name "*.conf"

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285. options (switches) to the ps command may start with:

all are correct

nothing

Answer

Correct Answer: all are correct

Note: This Question is unanswered, help us to find answer for this one

286. What does it mean when a variable is unbound?

It is not defined.

It exists but is not a displayable type.

Answer

Correct Answer: It is not defined.

Note: This Question is unanswered, help us to find answer for this one

287. For what purposes can socat be used?

All of these

Concatenating arbitrary pcap files to the network

Bridging a TCP and UDP service

SOCKS Proxy

IPv6 to IPv4 bridging

Answer

Correct Answer: All of these

Note: This Question is unanswered, help us to find answer for this one

288. What is "vmlinuz"?

It is a "virtual machine" used in Linux.

It is a "type of Linux Shell".

This command executes Linux in "virtual mode".

It is a "compressed Linux kernel".

It is a "type of Linux operating system".

Answer

Correct Answer: It is a "compressed Linux kernel".

Note: This Question is unanswered, help us to find answer for this one

289. How to display current iptables rules?

iptables -l

ipfw

iptables --show

iptables -L

route -n

Answer

Correct Answer: iptables -L

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290. What is the uid of root?

superuser

1000

-1

Answer

Correct Answer: 0

Note: This Question is unanswered, help us to find answer for this one

291. What binary format do Linux Executables use?

Mach-O

COFF

a.out

ELF

Answer

Correct Answer: ELF

Note: This Question is unanswered, help us to find answer for this one

292. To search one or more files for matching lines, which command may be used?

fgrep

egrep

grep

All of these

Answer

Correct Answer: All of these

Note: This Question is unanswered, help us to find answer for this one

293. _____ is not a 'Terminal Emulator'.

gnome-terminal

konsole

gdm

xterm

Answer

Correct Answer: gdm

Note: This Question is unanswered, help us to find answer for this one

294. Which Run Level provides "Full multiuser mode with network and X display manager"?

Run Level 3

Run Level 1

Run Level 5

Run Level 4

Run Level 2

Answer

Correct Answer: Run Level 5

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295. modinfo [options] ofile' will:

create a help file for kernel module ofile

set information about kernel module ofile

print information about kernel module ofile

set default handling options for kernel module ofile

Answer

Correct Answer: print information about kernel module ofile

Note: This Question is unanswered, help us to find answer for this one

296. In a ps command output, the PPID displays the:

Process's scheduling priority

Number of memory pages (swap) of the process

Process ID

Parent process ID

Answer

Correct Answer: Parent process ID

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297. To see the kernel routing tables, you do:

route -w

cat /etc/routetab

route or netstat -r

routing

Answer

Correct Answer: route or netstat -r

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298. 'mv -f' will:

will move the file in a fast mode, namely will not make any checks (like if there's enough space for the file)

will move the file or directory to a FIFO device

even if the target file exists, the operation will be carried out (and no warning messages on restricted access modes will be printed)

move the file to the filesystem indicated after the '-f' switch

Answer

Correct Answer: even if the target file exists, the operation will be carried out (and no warning messages on restricted access modes will be printed)

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299. How do you redirect stderr to stdout?

Using 2>&1

Using >/dev/error

Using >>stderr

Answer

Correct Answer: Using 2>&1

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300. What does the $ represent within the context of a shell command?

The string after the $ is replaced by a directory name.

The string after the $ will take on the value of the environment variable with the same name.

all of these

Answer

Correct Answer: The string after the $ will take on the value of the environment variable with the same name.

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301. what makes the command "netstat -s"

Only list of the listening ports

Showing statistics of only TCP protocol

Displays statistics by protocol. By default, statistics are shown for the TCP, UDP, ICMP, and IP protocols.

List of processes that use the connection at the moment

Answer

Correct Answer: Displays statistics by protocol. By default, statistics are shown for the TCP, UDP, ICMP, and IP protocols.

Note: This Question is unanswered, help us to find answer for this one

302. command1 | command2 will?

Output command2 wil be input of command1

Command2 run after Command1

Command1 and Command2 run together

Output command1 wil be input of command2

Answer

Correct Answer: Output command1 wil be input of command2

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303. To report the amount of free disk space available on all mounted file systems you use the command:

free

Answer

Correct Answer: df

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304. Why hasn't ZFS been added to the Linux kernel?

It's too hard to port filesystems to Linux

Sun's implementation uses a license incompatible with the GPL

Oracle is suing the Linux Foundation

There is a user space port using FUSE

Answer

Correct Answer: Sun's implementation uses a license incompatible with the GPL

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305. If DDD is a non empty directory, and you execute 'rmdir DDD', it will:

move the contents of DDD to /tmp, and delete the DDD directory

delete both the contents of and the DDD directory

produce an error

delete only the contents of the DDD directory

Answer

Correct Answer: produce an error

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306. In a date +format, you add the hour in 24 hours format using:

Answer

Correct Answer: %H

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307. printenv will:

type values of environment variables

print a text file to the default printer

print a text file to the printer specified in $PRINTER

print a text file to the printer specified in /etc/env

Answer

Correct Answer: type values of environment variables

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308. What is the maximum length of a file name on Linux?

255 bytes.

It depends on the file system.

256 bytes.

1024 bytes.

1023 bytes.

Answer

Correct Answer: It depends on the file system.

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309. If you use the rm command to accidentally delete a file, how can you get the file back?

You cannot get the file back.

Go to the trash bin and remove it.

Type the rm -u command.

Answer

Correct Answer: You cannot get the file back.

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310. mount -a' will load all filesystems listed in:

/etc/mtab

/etc/fstab

/etc/filesystems

/etc/fs.conf

Answer

Correct Answer: /etc/fstab

Note: This Question is unanswered, help us to find answer for this one

311. Which return value from an ioctl request indicates success?

ENOTTY

EFAULTF

EINVAL

EBADF

Answer

Correct Answer: 0

Note: This Question is unanswered, help us to find answer for this one

312. Which of the following is not an editor?

emacs

expr

Answer

Correct Answer: expr

Note: This Question is unanswered, help us to find answer for this one

313. How would you create an alias for the cat command?

ren bkw=cat

You cannot do that.

alias bkw=cat

Answer

Correct Answer: alias bkw=cat

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314. the '-r' switch to the mount command will:

mount a filesystem as read-only

mount filesystem only after a read-write check is performed

mount removable (e.g., CD-ROM) filesystem

mount remote (network) filesystems

Answer

Correct Answer: mount a filesystem as read-only

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315. What does the Linux "no" command do?

Nothing; it doesn't exist.

It's the opposite of the "yes" command; it outputs an infinite series of 'n's (or a word of your choice).

It returns a non-zero exit code to indicate failure (it's a synonym to the "false" command).

Answer

Correct Answer: Nothing; it doesn't exist.

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316. What is a zombie process?

A zombie process is a process whose status had been saved on the disk, and which is now waiting to be restored.

A zombie process is a process which has terminated, but whose parent had not yet read its exit status.

A zombie process is a process created by a worm to remain active even after it is killed.

Answer

Correct Answer: A zombie process is a process which has terminated, but whose parent had not yet read its exit status.

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317. Consider using the command "cd /a/b/c", then executing "cd ..". What does this last command do?

displays the default directory path

changes to /a/b directory

changes to the / directory

prompts you for the next directory choice

changes to your home directory

Answer

Correct Answer: changes to /a/b directory

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318. The command "free" reports on:

cpu

disk space

memory

Answer

Correct Answer: memory

Note: This Question is unanswered, help us to find answer for this one

319. Which tool is similar to find except that it uses an index to search?

fastfind

locate

Answer

Correct Answer: locate

Note: This Question is unanswered, help us to find answer for this one

320. Add this symbol to a command to run it in the background

Answer

Correct Answer: &

Note: This Question is unanswered, help us to find answer for this one

321. How do you view the documentation for the command 'kill' in the Linux terminal?

cat /etc/docs/kill | less

kill --help

man kill

doc kill

kill -help

Answer

Correct Answer: man kill

Note: This Question is unanswered, help us to find answer for this one

322. LILO...

stands for "Light Loader"

is a type of Linux Distro

is a boot loader that can boot Linux

stands for "Lannister-In-Lannister-Out"

is only used by Slackware

Answer

Correct Answer: is a boot loader that can boot Linux

Note: This Question is unanswered, help us to find answer for this one

323. What is swap?

Swap is the cache of your Physical Memory (RAM)

Swap is the ability to switch between users in one terminal session

Swap is the cache of your HDD

Swap space is the area on a hard disk which is part of the Virtual Memory of your machine (Swap+RAM)

Answer

Correct Answer: Swap space is the area on a hard disk which is part of the Virtual Memory of your machine (Swap+RAM)

Note: This Question is unanswered, help us to find answer for this one

324. To repeat the last command in the bash shell history, type...

$HISTFILE

Answer

Correct Answer: !!

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325. What does it means when the ps commands shows a 'Z' in the status column for a process?

The process is running at low priority.

The process is a zombie process.

The process is in sleep mode.

The process is running at top priority.

Answer

Correct Answer: The process is a zombie process.

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326. What is GNOME ?

A computer software system and network protocol that provides a basis for graphical user interfaces (GUIs) and rich input device capability for networked computers.

A linux distribution

A desktop environment and graphical user interface that runs on top of a computer operating system.

Answer

Correct Answer: A desktop environment and graphical user interface that runs on top of a computer operating system.

Note: This Question is unanswered, help us to find answer for this one

327. what the "cd /" command do?

The directory one level up from the current directory

Listing all LISTENING Connections

Change into the root directory

Answer

Correct Answer: Change into the root directory

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328. What is the right command to save file and exit in Vim?

:q!

:w 'file name'

:wq

Answer

Correct Answer: :wq

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329. To query DNS (Internet domain name) servers, you use the command:

nslookup

dns

lsrouted

dnsquery

Answer

Correct Answer: nslookup

Note: This Question is unanswered, help us to find answer for this one

330. Ubuntu is based on...

None of these

Slackware

Gentoo

Debian

Fedora

Answer

Correct Answer: Debian

Note: This Question is unanswered, help us to find answer for this one

331. 'mkfs' is used to:

create a named pipe (fifo) on a device

create a filesystem on a device (such as a hard disk partition)

create a fast changing section on a hard disk

format a floppy disk

Answer

Correct Answer: create a filesystem on a device (such as a hard disk partition)

Note: This Question is unanswered, help us to find answer for this one

332. What makes up a Linux kernel?

kernel modules

base kernel

all of these

Answer

Correct Answer: all of these

Note: This Question is unanswered, help us to find answer for this one

333. Which directory contains all the files needed to boot the Linux system?

/boot

/bin

/dev

Answer

Correct Answer: /boot

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334. What will show you all the subdirectories of the current directory?

Answer

Correct Answer: ls

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335. The Linux Kernel was written by?

Richard Stallman

Brian Kernighan

Linus Torvalds

Dennis Ritchie

Answer

Correct Answer: Linus Torvalds

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336. what the command "cd .." do

move to root directory

move to home directory

nothing

one level up from the current directory

Answer

Correct Answer: one level up from the current directory

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337. If you wanted to execute a shell command in the background, which character would you put at the end of the command line?

;

Answer

Correct Answer: &

Note: This Question is unanswered, help us to find answer for this one

338. SSH stands for _____.

Security Shell

Synchronous Shell

Secure Shell

Super Shell

System Shell

Answer

Correct Answer: Secure Shell

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339. The loaded modules in the kernel are listed in /proc/modules. You can get this list using the command:

modules

lsattr

lsmod

listmodules

Answer

Correct Answer: lsmod

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340. what makes the command cd ../../

nothing

moves the root home directory

moves the current home directory

Traverse two directories up the directory tree.

wil be error

Answer

Correct Answer: Traverse two directories up the directory tree.

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341. To print the first 10 lines of one or more files to the standard output, you use the command:

topf

start

head

ftop

Answer

Correct Answer: head

Note: This Question is unanswered, help us to find answer for this one

342. The behavior of the system for each "runlevel" is available in the _____ file.

/etc/rlevel

/etc/hosts

/etc/mtab

/etc/crontab

/etc/inittab

Answer

Correct Answer: /etc/inittab

Note: This Question is unanswered, help us to find answer for this one

343. The run level in a system can be configured in the file _____.

/bin/runlev

/etc/inittab

/bin/rlev

/sys/rinit

/etc/syslev

Answer

Correct Answer: /etc/inittab

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344. Which is an example of a shell comment?

//mkdir text

mkdir text # make a directory

mkdir text //make a directory

Answer

Correct Answer: mkdir text # make a directory

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345. To use chown recursively, instead of using _recursive you can use:

-c

#NAME?

-r

-R

Answer

Correct Answer: -R

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346. The jobs command

lists background jobs

provides basic accounting information for all current jobs

halts all foreground jobs

prints a dedication to Steve Jobs

puts all foreground jobs in the background

Answer

Correct Answer: lists background jobs

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347. The at command allows you to execute a command at:

a certain machine

a certain date

a certain network

a certain holiday

Answer

Correct Answer: a certain date

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348. What does the following line mean when it is run in a script '#!/bin/bash'?

It checks to see if the bash shell exists on the machine.

It makes sure that the script runs in the bash shell.

all of these

Answer

Correct Answer: It makes sure that the script runs in the bash shell.

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349. What will you get if you try to read from the pseudo-device /dev/null?

Nothing.

An error (/dev/null can only be written to, not read from).

An infinite string of zeroes ('0', ASCII 0x30).

An infinite string of nulls ('\0', ASCII 0x00).

Answer

Correct Answer: Nothing.

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350. What is the linux mascot?

Penguin

Gecko

Elephant

Hat

Answer

Correct Answer: Penguin

Note: This Question is unanswered, help us to find answer for this one

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