Red Hat Linux MCQ Questions Answers

1. Which command adds a new user?

2. What does the du command do?

3. Which of the following vi commands will exit forcefully from the vi editor without saving changes to the file?

4. How can the version of the Linux kernel be checked?

5. Which command is used to add a new group?

6. What does the history command do?

7. Which is the correct syntax to display the calendar of September 2005?

8. What does the head command do?

9. Which of the following commands lets you search for text in a file without opening the file first?

10. What does permission 777 denote?

11. What is the purpose of the makewhatis command?

12. Linux operating system is:

13. What is the purpose of the touch command?

14. The user's current path is /root/Desktop/abc. If he runs $ cd ../../../ what will be the user's current working directory?

15. How can you locate the file named passwd?

16. Which of the following vi commands will delete the current line?

17. What is the correct format to open the file /etc/test into the vi editor?

18. Which of the following is an incorrect command?

19. Who developed Linux?

20. Which command changes permissions of files or directories?

21. What output should the ls command show after executing the following command? $ touch {report,graph}_{jan,feb,mar}

22. What does permission 644 denote?

23. What is the name of the file where groups are added?

24. Which of the following is not a valid shell?

25. What is the meaning of GPL?

26. Which of the following are valid grep syntax?

27. What is the output of the following command? $ man cal > cal.man

28. What kind of software is the Linux operating system?

29. How many terminals are provided by default in the Linux operating system?

30. Why is the wc command used?

31. Which of the following is the correct path of the passwd file?

32. Which of the following vi commands is used to enter in to insert mode?

33. How can you obtain a short description of the ls command?

34. Which of the following is the parent process in Linux, which further has no parent?

35. Which of the following is the intermediate between the hardware and the shell in the Linux operating system?

36. What does the pwd command do?

37. Does Linux support wildcard characters, regular expressions and modifiers?

38. What does the following command do? # what is cal

39. Which of the following commands will show you a page-wise listing?

40. Which of the following vi commands will save the file and exit forcefully from the vi editor?

41. Which of the following is the path that contains documentation about installed packages?

42. Which of the following vi commands will discard the changes to the file and exit the vi editor?

43. What does the aspell command do?

44. How will you display the fifth man page for the inittab command?

45. Allen wants to see a long listing of files, including the hidden files of the current directory. Which option will he choose with the ls command?

46. Which is the correct syntax to give permission 755 to the dir /etc/test ?

47. Which of the following commands will create a softlink?

48. Which command is used to modify the user?

49. Which of the following commands can be used to display a long listing of files, with a human-readable file size (like 6.8M instead of 6819467)?

50. Which entry does not belong to ifcfg-eth0 ?

51. How can ext3 filesystem be converted to ext2 filesystem if the partition is /dev/hda7 ?

52. Which statement correctly creates a Volume Group, named vg0, when there are two partitions /dev/hda6 and /dev/hda7 of 150 MB each, totalling 300MB?

53. What is the path of rc.sysinit?

54. What types of files does /proc filesystem consist of?

55. In Red Hat Linux 9 OS, which of the following run levels specifies the full multi-user graphical mode?

56. Which is the correct command to start the daemon of the printserver?

57. /dev/hda6 and /dev/hda7 are two partitions of 150MB each. What is the correct statement to create physical volumes?

58. Which of the following files contains the IP address of the gateway?

59. During Linux installation, in which mode can RAID be created?

60. Which of the following commands will format the /test partition?

61. Which of the following denotes Raid level 0?

62. A new swap partition is created and entered correctly in /etc/fstab. How will it be mounted?

63. How can you tell which RPM the /etc/inittab file belongs to?

64. What is the correct format for kickstart installation through NFS, when the NFS IP is 192.168.0.254, and the file path on the server is /kickstart/ks.cfg ?

65. The command which configures devices is:

66. A new partition /dev/hda6 has been created. How will it be formatted with ext3 file system (one block=1024 bytes, inode size=one inode every 2 blocks)?

67. What does the entry id:3:initdefault: define in the /etc/inittab file?

68. What should be the command to view the details of raid device /dev/md0 ?

69. Which command is used to set a quota for user Debbie. The path is /test, the size of quota is 5MB and soft limit is 4MB. The user is not allowed to use more than 5MB.

70. There are 3 disks of 1 GB each, with mean total 3 GB. If a raid level 5 is implemented, what will be the size of the raid device?

71. How is an LVM of 200MB named lv0 created within the volume group vg0?

72. In which of the following locations are boot messages stored?

73. Can the size of LVM be decreased?

74. In Red Hat Linux 9 OS, which of the following directories is used to store the configuration files for network interfaces, and the scripts for activating and deactivating them?

75. How should a raid device /dev/md0, with level 0, and devices /dev/hda6, /dev/hda7 be created?

76. What is the full form of MBR?

77. What should be done to extend a 200MB LVM named lv0 by 50MB. A volume group named vg0 of 100MB is available free, lv0 is mounted on /test ?

78. Which entry is not required in /etc/sysconfig/network ?

79. What will be the behavior of the following command: # echo '1' > /proc/sys/net/ipv4/ip_forward

80. How can ext2 filesystem be converted to ext3 filesystem if the partition is /dev/hda7 ?

81. Can / partition on lvm device be installed during installation?

82. What problems will be faced during reboot, when the permissions of /tmp are 655, and the default permissions are 1777?

83. While troubleshooting Xserver, which of the following steps is not required?

84. Through which of the following commands can a corrupted initrd be recreated?

85. How can kernel-2.6.9-5 rpm be installed?

86. How many disks are required in Raid level 5?

87. Which entry is specified in /etc/resolv.conf ?

88. When the system is started, it shows Redhat Enterprise Linux. When the enter key is pressed, it shows the grub prompt. The present working directory is either / or /boot. How can you find the /boot partition at the grub prompt?

89. What is proc file system?

90. Sticky bit and suid are to be set on /home/test. Which command should be used to give rwx permissions to each user, group and others?

91. How should a cron job that prints 'hello' every morning at 4:02am, be set up?

92. If the permissions of rc.sysinit are changed from 655 to 444, what will happen during the next reboot?

93. In Red Hat Linux 9 OS, which of the following commands can only be used in the GRUB menu configuration file? 1. password 2. timeout 3. splashimage 4. fallback

94. If /root partition is installed on /dev/hda2, what defines hda2 ?

95. Which of the following repquota command option is used to Report all quotas, even if there is no usage?

96. In which mode can LVM be created during installation?

97. Which of the following commands enables ip forwarding permanently?

98. Which of the following will occur when the 'rpm -ql nagios' command is used?

99. Which command generates a DSA ssh key?

100. Which of the following describes the /proc command?