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Basic TCP/IP MCQ

1. If i simplify the address 2001:0000:0000:00fe:0000:0000:0000:cdef, i get ________.

2001:::fe::::cdef

2001::fe::::cdef

2001:::fe::cdef

2001::00fe:::cdef

Answer

Correct Answer: 2001:::fe::::cdef

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2. A popular network protocol is ____, which today is the backbone of the internet.

Mbps

TCP/IP

Access

Switch

Answer

Correct Answer: TCP/IP

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3. Which of the following ranges are reserved as private addresses?

10.0.0.0 — 10.255.255.255

192.168.0.0 — 192.255.255.255

172.16.0.0 — 172.31.255.255

172.16.0.0 — 172.255.255.255

Answer

Correct Answer: 10.0.0.0 — 10.255.255.255
172.16.0.0 — 172.31.255.255

Note: This question has more than 1 correct answers

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

4. What is the binary value of hex 9F?

10011111

10111000

11110001

10001111

Answer

Correct Answer: 10011111

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5. State whether true or false. TCP is less reliable but faster than UDP.

True

False

Answer

Correct Answer: False

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6. How many hosts can you assign with a Class C network address using a subnet mask of 255.255.255.192..

255

2046

Answer

Correct Answer: 62

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7. What must be specified as part of a client reservation?

An IP address and the physical address of the network adapter used by the DHCP client

Scope Options

Global Options

Client Options

The IP address of one or more DHCP server

Answer

Correct Answer: An IP address and the physical address of the network adapter used by the DHCP client

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

8. Which of the following is a universal and uniform numeric identifier for each computer on the network?

IP address

Physical address

ARP

Domain Name System

RARP

Answer

Correct Answer: IP address

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

9.
You have four Class C network addresses:

203.200.5.0, 203.200.6.0, 203.200.7.0 and 203.200.8.0

You want to combine these addresses into one logical network to increase the host IDs that you can have on one subnet. Which subnet mask should you assign?

255.255.252.0

255.255.254.0

255.255.255.252

255.255.255.254

255.255.0.0

Answer

Correct Answer: 255.255.252.0

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

10. Assuming that none of the hosts has cached the entries, how many ARP broadcasts would be required for a host on one subnet to communicate with a host on a remote subnet that is separated by a single router?

Answer

Correct Answer: 2

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11. By default how many subnets can you create with a Class B network address using a subnet mask of 255.255.252.0?

255

252

Answer

Correct Answer: 64

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12. What are some of the keywords that can be included in your LMHOSTS file?

#HOSTS

#LM

#FIRST

#MH

#PRE

Answer

Correct Answer: #MH
#PRE

Note: This question has more than 1 correct answers

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13. Which of the following Protocols is used as a security Protocol and is also one of the secure encryption systems used in communication?

SMTP

Kerberos

TFTP

DNS

Answer

Correct Answer: Kerberos

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14. How do you resolve IP addresses locally?

By typing Resolve IP address ip-address

By typing ARP-s ip-address

With an ARP request and an ARP reply

With a RARP request and a RARP reply

By sending a broadcast

Answer

Correct Answer: With an ARP request and an ARP reply

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15. How can a host resolve an IP address of another host located on the same subnet without needing to send a broadcast?

By requesting the physical address of the destination host

By requesting the physical address of the router

By accessing the routing table

If the entry is already in the source host's ARP cache

The host cannot resolve the IP address without sending a broadcast

Answer

Correct Answer: If the entry is already in the source host's ARP cache

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16. Which of the following address is reserved for loopback tests?

10.0.0.1

127.0.0.1

172.16.0.1

192.168.0.1

Answer

Correct Answer: 127.0.0.1

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17. Which address classes cannot be assigned to host computers?

Class A and Class B

Class B and Class C

Class D and Class E

Class C and Class D

Class A and Class E

Answer

Correct Answer: Class D and Class E

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18. Which of the following is a Multicast Address?

127.0.0.1

224.10.1.7

192.168.0.255

10.0.0.0

Answer

Correct Answer: 224.10.1.7

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19. What is the default subnet mask for a Class C network?

255.0.0.0

255.255.0.0

255.255.255.0

255.0.0.255

0.0.255.255

Answer

Correct Answer: 255.255.255.0

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20. Which of the following addresses are reserved for multicasting?

Class A addresses

Class B addresses

Class C addresses

Class D addresses

Class E addresses

Answer

Correct Answer: Class D addresses

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21. How many hosts can a Class A network accommodate?

126

127

Over 16 million

Answer

Correct Answer: Over 16 million

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22. What is the default time-to-live (TTL) value for an entry in the ARP cache?

30 seconds

60 seconds

2 minutes

90 seconds

1 minute

Depends on OS

Answer

Correct Answer: Depends on OS

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23. Which of the following is definitely a broadcast address for a class C network having Subnet Mask 255.255.255.0?

xxx.xxx.xxx.0

xxx.xxx.255.1

xxx.xxx.xxx.126

xxx.xxx.xxx.254

xxx.xxx.xxx.255

None of the above

Answer

Correct Answer: xxx.xxx.xxx.255

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24. What is the maximum number of usable subnets that you can create in a class B network?

32768

65536

16384

Infinite

Answer

Correct Answer: 16384

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25. What is the broadcast address of IP address 172.16.10.0 with a subnet mask of 255.255.252.0?

172.16.10.255

172.16.12.255

172.16.11.255

172.16.15.255

Answer

Correct Answer: 172.16.11.255

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26. Which class address has the beginning range of 192.0.0.1 and the ending range of 223.255.255.254?

Class A

Class B

Class C

Class D

Class E

Answer

Correct Answer: Class C

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27. Which utility should you use to test whether TCP/IP has been initialized on a computer?

ipconfig

init

trace

ping

Answer

Correct Answer: ping

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28. On which layer of OSI (Open Systems Interconnection) model do TCP and UDP work?

Presentation Layer

Network Layer

Physical Layer

Transport Layer

Answer

Correct Answer: Transport Layer

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29. What TCP/IP configuration settings are required for a computer to be able to communicate outside of its local subnet?

The IP address of the computer outside the subnet

A unique IP address, a subnet mask and the IP address of a default gateway

The IP address of the default gateway

A custom subnet mask

The physical address of the destination computer

Answer

Correct Answer: A unique IP address, a subnet mask and the IP address of a default gateway

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30. Which of the following Protocols use port number 25?

TFTP

POP3

SMTP

HTTP

Answer

Correct Answer: SMTP

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31. Which file transfer Protocol uses UDP as a transport Protocol and lacks security?

TFTP

FTP

RPC

DHCP

Answer

Correct Answer: TFTP

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32. You have 350 computers spread across eight subnets with two DHCP servers. You want each workstation to receive an IP address even when one of the DHCP servers is down. What should you do?

Create eight DHCP scopes on each DHCP server

Create four DHCP scopes on each DHCP server

Create two global DHCP scopes on each DHCP server

Create one global DHCP scope on each DHCP server

Create three global DHCP scopes on each DHCP server

Answer

Correct Answer: Create eight DHCP scopes on each DHCP server

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33. Which protocol is used to transfer information between a WWW server and a WWW browser?

FTP

UDP

HTTP

ICMP

Answer

Correct Answer: HTTP

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34. What is the purpose of the metric value in a routing table?

It specifies the number of entries in the routing table

It specifies the IP address of the router

It specifies the default gateway address

It is used to find the best route to the desired network

It specifies the subnet mask

Answer

Correct Answer: It is used to find the best route to the desired network

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35. What is the maximum number of valid IP addresses in a class C network?

256

512

65536

254

Answer

Correct Answer: 254

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36. Which of the following Protocols can automatically provide IP address, subnet mask, default gateway and DNS server's IP address to a client on a network?

FTP

SMTP

ARP

DHCP

Answer

Correct Answer: DHCP

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37. When is supernetting required?

When the host address should not be partitioned for the purpose of subnetting

When a single subnet needs more host IDs than provided by the class of address

When a host ID has to be divided into two parts

When network performance needs to be improved

When a subnet needs to be isolated

Answer

Correct Answer: When a single subnet needs more host IDs than provided by the class of address

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38. At what point does a DHCP client attempt to renew its lease?

When 1/2 of the lease period has expired

When 3/4 of the lease period has expired

When 2/3 of the lease period has expired

When 1/3 of the lease period has expired

After the lease period has expired

Answer

Correct Answer: When 1/2 of the lease period has expired

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39. You have a Class B network and you plan to break it up into seven subnets. One subnet will be connected to the Internet, but you want all computers to have access to the Internet. How should you assign the subnet mask on the router for the networks?

By using a default subnet mask

By assigning a subnet mask of 0.0.0.0

By assigning a subnet mask of 255.255.255.0

By assigning a subnet mask that has the IP address of the router

By creating a custom subnet mask

Answer

Correct Answer: By creating a custom subnet mask

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40. Which Protocol uses port number 21?

FTP

SMTP

Telnet

HTTP

Answer

Correct Answer: FTP

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41. What is the binary value of 157?

11000111

10111001

11100011

10011101

Answer

Correct Answer: 10011101

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42. In TCP/IP, what is the Windowing mechanism used for?

It performs error checking

It enables the lost segments to be detected and retransmitted

It enables TCP to control the flow of data

It appends a header to the data that is received

It establishes a session

Answer

Correct Answer: It enables TCP to control the flow of data

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43. Which of the following indicates a local class C subnet?

xxx.xxx.xxx.0

xxx.0.0.1

xxx.xxx.0.126

xxx.xxx.xxx.256

xxx.xxx.xxx.255

Answer

Correct Answer: xxx.xxx.xxx.0

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44. What is the port number used by HTTP?

112

Answer

Correct Answer: 80

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45. How many hosts can you assign with a Class C network address using a subnet mask of 255.255.255.192?

255

2046

Answer

Correct Answer: 62

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46. What is the purpose of a DHCP relay agent?

To maintain the database of TCP/IP configurations

To forward DHCP requests to a DHCP server from DHCP clients in a subnet that does not contain a DHCP server

To provide IP configuration settings that should be applied to all DHCP clients in all subnets

To create a client reservation for a DHCP client

To relay messages from one DHCP client to another DHCP client

Answer

Correct Answer: To forward DHCP requests to a DHCP server from DHCP clients in a subnet that does not contain a DHCP server

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47. Which are the two valid IP addresses in the subnets of 192.168.10.0 network with a subnet mask of 255.255.255.248?

192.168.10.1

192.168.10.24

192.168.10.63

192.168.10.5

Answer

Correct Answer: 192.168.10.1
192.168.10.5

Note: This question has more than 1 correct answers

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48. After a host name is resolved to an IP address, what does a local host need to do next to communicate with the target host if the target host resides on the same subnet?

Send an ARP broadcast to the router

Send an ARP broadcast to the DHCP server and the local subnet

Resolve the IP address to a physical address using ARP

Update the routing table

Scan the local LMHOSTS file for the requested name

Answer

Correct Answer: Resolve the IP address to a physical address using ARP

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49. To which subnet does the IP address 10.120.100.255/18 belong to?

10.120.96.0

10.120.100.0

10.120.64.0

10.0.0.0

Answer

Correct Answer: 10.120.64.0

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50. What is the class of IP address 128.10.15.24?

Class A

Class B

Class C

Class D

Answer

Correct Answer: Class B

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51. Your Company has a class C network. Your company requires 6 usable subnets, with 20 hosts in each subnet. Which subnet mask will you use?

255.255.255.0

255.255.255.240

255.255.255.224

255.255.255.192

Answer

Correct Answer: 255.255.255.224

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52. If UDP receives datagrams that are not in a sequence, what will it do?

It will arrange them in a sequence using sequence numbers

It will request source host to resend datagrams

It will drop datagrams that are not in sequence

None of the above

Answer

Correct Answer: None of the above

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53. Which of the following is a valid host IP address?

200.100.100.31/27

200.100.100.32/26

200.100.100.40/29

200.100.100.51/30

Answer

Correct Answer: 200.100.100.32/26

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54. Which of the following is a valid unicast IP address?

127.0.0.1

224.50.72.10

172.30.50.15/30

192.168.1.5/30

Answer

Correct Answer: 192.168.1.5/30

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55. What is maximum number of hosts allowed on subnet 172.20.64.0/23?

510

512

1024

256

Answer

Correct Answer: 510

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56. How does ARP work when attempting to resolve the IP address of a destination host located on a different subnet?

By sending an ARP broadcast requesting the physical address of the destination host

By sending an ARP broadcast requesting the physical address of the router

By sending an ARP broadcast for the IP address it is attempting to use

By sending an ARP request to the default gateway

By sending an ARP request to the DHCP server on the remote subnet

Answer

Correct Answer: By sending an ARP broadcast requesting the physical address of the router

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57. Which one of the following addresses can be used as a host address for the subnet 200.100.10.64/27?

200.100.10.32

200.100.10.95

200.100.10.64

200.100.10.90

Answer

Correct Answer: 200.100.10.90

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58. What kind of message can an SNMP agent generate?

A trace message

An SNMP message

An alert message

A trap message

A get message

Answer

Correct Answer: A trap message

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59. What does the HOSTS file contain?

IP addresses and NetBIOS names

Physical addresses of each host

IP addresses of each host

IP address-to-NetBIOS name mappings

An entry for each host's IP address followed by the host name

Answer

Correct Answer: An entry for each host's IP address followed by the host name

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60. How is a subnet mask specified for supernetting?

The host ID portion of a class address is extended to use a portion of the network ID

The host ID portion is reduced

The total number of bits used for IP addressing is increased

The subnet mask need not be specified for supernetting

The number of hosts on the network is decreased

Answer

Correct Answer: The host ID portion of a class address is extended to use a portion of the network ID

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61. If you have a subnet mask of /27 for a class C network, how many subnets and host per subnet will you get?

4 networks and 62 hosts

64 networks and 4 hosts

32 networks and 8 hosts

8 networks and 30 hosts

Answer

Correct Answer: 8 networks and 30 hosts

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62. Which IP address class does the following IP address belong to? 78.34.6.90

Class A

Class B

Class C

Class D

Class E

Answer

Correct Answer: Class A

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63. What is the network ID of IP address 172.30.60.0/20?

172.30.16.0

172.30.48.0

172.30.32.0

172.30.0.0

Answer

Correct Answer: 172.30.48.0

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64. Which protocols does SNMP use when sending messages between subnets?

IP and UDP

TCP and IP

FTP and TCP

ICMP and UDP

Answer

Correct Answer: IP and UDP

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65. Which protocol matches the remote host's physical address to a given IP address?

TCP

ARP

UDP

ICMP

Answer

Correct Answer: ARP

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66. Which Protocol is used to find the IP address from the name of a website/host?

FTP

SNMP

DNS

POP3

Answer

Correct Answer: DNS

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67. Your network has an IP of 150.150.0.0 and you need to divide it into multiple subnets. You need 600 host IDs for each subnet, with the largest amount of subnets available. Which subnet mask should you assign?

255.255.224.0

255.255.240.0

255.255.248.0

255.255.252.0

255.255.0.0

Answer

Correct Answer: 255.255.252.0

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68. In which class of addresses does the first octet specify the network ID and the last three octets specify the host ID?

Class A

Class B

Class C

Class D

Class E

Answer

Correct Answer: Class A

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69. How can you prevent a DHCP server from assigning an IP address to a DHCP client when that address is within the range of addresses defined in a DHCP scope?

Deny the request

Redefine the DHCP scope

Increase the range of IP addresses

Create a client reservation for future reference

Create an exclusion range containing the IP address

Answer

Correct Answer: Create an exclusion range containing the IP address

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70. Which technique enables a single network address to span multiple physical networks?

Multihoming

Multicasting

Multitasking

Subnetting

Supernetting

Answer

Correct Answer: Subnetting

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71. How many subnets are available in a class B network with subnet mask of 255.255.255.0?

256

512

1024

Answer

Correct Answer: 256

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72. Which of the following Protocols is used for transferring electronic mail?

FTP

SNMP

ARP

SMTP

Answer

Correct Answer: SMTP

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73. You have a Class A network address with 60 subnets. You need to add 40 new subnets in the next two years and still allow for the largest possible number of host IDs per subnet. Which subnet mask should you assign?

255.240.0.0

255.248.0.0

255.252.0.0

255.254.0.0

255.0.0.0

Answer

Correct Answer: 255.254.0.0

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74. Which protocol does the ping command use when attempting to test whether a remote host is running?

UDP

ICMP

IGMP

ARP

Answer

Correct Answer: ICMP

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75. Which statements are true regarding UDP?

It is a connectionless service

It is less reliable as compared to TCP

It uses handshaking

It is slow as compared to TCP

Answer

Correct Answer: It is a connectionless service
It is less reliable as compared to TCP

Note: This question has more than 1 correct answers

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76. What is the top-most level of the Internet domain name hierarchy called?

Zone

Internet domain name

The root domain

Reverse-lookup zone domain

Resolver

Answer

Correct Answer: The root domain

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77. TCP is less reliable but faster than UDP.

True

False

Answer

Correct Answer: False

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78. Which Protocol is used to obtain the MAC address from a given IP address?

ARP

SMTP

IARP

RARP

Answer

Correct Answer: ARP

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79. What is the maximum life time of an entry in the Dynamic ARP cache?

2 minutes

As specified by the system administrator

ARP entries are permanent

30 seconds

10 minutes

Answer

Correct Answer: 10 minutes

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80. How many bits are used to represent an IPv4 address?

128

Answer

Correct Answer: 32

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81. What is the binary value of hex BF?

10100000

10111111

11111000

00111011

Answer

Correct Answer: 10111111

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82. In TCP/IP protocol suite,where does ARP fall?

Application Layer

Phiysical and MAC layer

Transport Layer

Network layer

Answer

Correct Answer: Phiysical and MAC layer

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83. 06-00-00-00-00-00 is Unicast MAC Address

TRUE

FALSE

Answer

Correct Answer: TRUE

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84. A switch will forward a unicast frame through all of its ports (except for the port that originated the frame)

Allways

If the switch has no knowledge of which port leads to that MAC address

Never

Answer

Correct Answer: If the switch has no knowledge of which port leads to that MAC address

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85. 06-00-00-00-00-00 is Universally administered MAC address

FALSE

TRUE

Answer

Correct Answer: FALSE

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86. Which of the following is a VALID use of IP address 24.0.0.0/8?

Cable television networks

"This" network

Public-data networks

Multicast

Answer

Correct Answer: Cable television networks

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87. A TCP header should contain a:

total length field

sequence field

type-of-service field

protocol field

Answer

Correct Answer: sequence field

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88. Which of the following is NOT a protocol associated with the TCP/IP internetwork layer?

Internet Control Message Protocol (ICMP)

Internet Protocol (IP)

User Datagram Protocol (UDP)

Address Resolution Protocol (ARP)

Answer

Correct Answer: User Datagram Protocol (UDP)

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89. Which of the following is incorrect about an IPv4 address?

An IP address is 32 bytes long

An IP address is a logical address

An IP address is globally unique in an internetwork

An IP address can be considered to consist of a Network Part and a Host Part

Answer

Correct Answer: An IP address is 32 bytes long

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90. What is binary 00011000.01001100.01111001.00001010 equivalent to in Decimal?

24.67.121.11

24.76.211.10

24.77.121.10

24.76.121.10

Answer

Correct Answer: 24.76.121.10

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91. What is the maximum size of RIP datagrams?

256 octet

64 octet

512 octet

128 octet

Answer

Correct Answer: 512 octet

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92. Which of the following protocols was designed to overcome the weaknesses of RARP (Reverse Address Resolution Protocol)?

Internet Group Management Protocol (IGMP)

Address Resolution Protocol (ARP)

Bootstrap Protocol (BOOTP)

Reverse Address Resolution Protocol (RARP)

Answer

Correct Answer: Bootstrap Protocol (BOOTP)

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93. VERSION, IHL, TOS etc are valid properties of which of the following?

IP datagram

IP Header

IP Data

Subnet

Answer

Correct Answer: IP datagram

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94. Which of the following protocol messages belong to STD 6?

Internet Control Message Protocol (ICMP)

User Datagram Protocol (UDP)

Internet Protocol (IP)

Address Resolution Protocol (ARP)

Answer

Correct Answer: User Datagram Protocol (UDP)

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95. Which of the following is a VALID use of IP address 0.0.0.0/8?

Cable television networks

"This" network

Public-data networks

Multicast

Answer

Correct Answer: "This" network

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

96. Which of the following is not true regarding the traceroute application?

It uses the TTL field to determine routers in the path between the source and destination hosts

None of these

It uses TCP packets encapsulated in an IP packet

It traces out ap IP path taken by IP packets to a given destination

Answer

Correct Answer: It uses TCP packets encapsulated in an IP packet

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

97. Which of the following socket bypass the normal TCP/IP processing?

Stream socket

Datagram socket

Raw socket

All of the given options are valid

Answer

Correct Answer: Raw socket

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

98. Which of the following is not a valid TCP/IP protocol layer ?

Transport

Session

Internetwork

Application

Answer

Correct Answer: Session

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

99. What layer in the TCP/IP stack is equivalent to the Transport layer of the OSI model?

Host-to-Host

Network Access

Internet

Application

Answer

Correct Answer: Host-to-Host

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

100. Who invented TCP/IP?

Cerf and Kahn

Cerf and Postal

Crocker and Duvall

Kahn and Duvall

Answer

Correct Answer: Cerf and Kahn

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

101. Which of the following correctly define maximum transmission unit (MTU)?

Minimum supported length of an IP datagram

Minimum required frame size of a physical network as per standards

Maximum frame size of a physical network

Maximum length of an IP datagram

Answer

Correct Answer: Maximum frame size of a physical network

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

102. Which of the following is a connectionless network socket ?

Stream socket

Raw socket

Datagram socket

All of the given options are valid

Answer

Correct Answer: Datagram socket

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

103. Based on the provided answers, what is the best INCORRECT answer for ICMP?

ICMP stands for the Internet Control Message Protocol

If an ICMP packet is dropped, a new ICMP packet will be generated

The primary function of ICMP is for error notification between routers and hosts

ICMP is encapsulated in IP packets

Answer

Correct Answer: If an ICMP packet is dropped, a new ICMP packet will be generated

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

104. Which of the following is NOT a valid Dynamic Host Configuration Protocol (DHCP) message type?

DHCPNRELEASE

DHCPDISCOVER

DHCPREQUEST

DHCPOFFER

Answer

Correct Answer: DHCPNRELEASE

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

105. Which of the following is TRUE about Interior Gateway Protocols (IGPs)?

Allow the exchange of summary information between autonomous systems

Allow routers to exchange information within an autonomous system

Allow the exchange of information only within known systems

None of the given options are valid

Answer

Correct Answer: Allow routers to exchange information within an autonomous system

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

106. Which of the following is NOT a protocol associated with the TCP/IP transport layer?

Both User Datagram Protocol (UDP) and Transmission Control Protocol (TCP)

Internet Protocol (IP)

Transmission Control Protocol (TCP)

User Datagram Protocol (UDP)

Answer

Correct Answer: Internet Protocol (IP)

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

107. TCP/IP reference model contains how many layers

Answer

Correct Answer: 4

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

108. Which of the following protocol messages belong to STD 5?

Internet Control Message Protocol (ICMP)

Address Resolution Protocol (ARP)

User Datagram Protocol (UDP)

Internet Protocol (IP)

Answer

Correct Answer: Internet Control Message Protocol (ICMP)

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

109. Layer 4 of the OSI model contains the TCP and UDP protocols, what is FALSE about UDP?

Does not contain any port numbers

Low overhead

Unreliable

Stands for User Datagram Protocol

Answer

Correct Answer: Does not contain any port numbers

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

110. Which of the following is a VALID use of IP address 14.0.0.0/8?

Cable television networks

Multicast

Public-data networks

"This" network

Answer

Correct Answer: Public-data networks

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

111. Which of the following TCP/IP layer provides the end-to-end data transfer by delivering data from an application to its remote peer?

Transport

Application

Network interface

Session

Answer

Correct Answer: Transport

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

112. In an IPv4 header the IP Flag is set to D. What does it mean?

0x40 : Do not fragment

0x65: ARP returned

0x80: ARP dropped

0x20: Fragment and send

Answer

Correct Answer: 0x40 : Do not fragment

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

113. Internet Protocol (IP) is the most important protocol in which of the following layer

Application

Session

Internetwork layer

Network interface

Answer

Correct Answer: Internetwork layer

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

114. Dynamic Host Configuration Protocol (DHCP) supports which of the following mechanisms for IP address allocation?

All of the given options are correct

Manual allocation

Dynamic allocation

Automatic allocation

Answer

Correct Answer: All of the given options are correct

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

115. Which of the following TCP/IP protocol layer is also called as a link layer or the data-link layer?

Transport

Network interface

Session

Application

Answer

Correct Answer: Network interface

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

116. Which of the following TCP/IP protocol layer is also called as internet layer or the network layer?

Internetwork layer

Network interface

Session

Application

Answer

Correct Answer: Internetwork layer

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

117. Which of the following allows a router to respond to an ARP request that is intended for a remote host?

Proxy ARP

Reverse ARP (RARP)

Gateway DP

Inverse ARP (IARP)

Answer

Correct Answer: Proxy ARP

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

118. Which of the following is an VALID RIP packet type?

Request packet and Response packet

Data packet

Request packet

Response packet

Answer

Correct Answer: Request packet and Response packet

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

119. Which of the following correctly describes Dynamic Host Configuration Protocol (DHCP) message type DHCPOFFER?

Acknowledgement from server to client with parameters, including IP address

Negative acknowledgement from server to client

Response from a server to a DHCPDISCOVER and offering IP address and other parameters

Broadcast by a client to find available DHCP servers

Answer

Correct Answer: Response from a server to a DHCPDISCOVER and offering IP address and other parameters

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

120. TCP contains fields in the header of TCP Segment to identify upper layer applications, what are these fields?

Options

The TTL field

Source and Destination Port Numbers

The TYPE field

Answer

Correct Answer: Source and Destination Port Numbers

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

121. Which of the following IP addresses use 8 bits for the <network> and 24 bits for the <host> portion of the IP address?

Class B addresses

Class C addresses

Class A addresses

Class D addresses

Answer

Correct Answer: Class A addresses

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

122. IP addresses are represented by a which of the following sized unsigned binary value?

256-bit

128-bit

32-bit

64-bit

Answer

Correct Answer: 32-bit

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

123. Which of the following is an interface between an application/program/software and network?

subnet

socket

datagram

handle

Answer

Correct Answer: socket

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

124. Which of the following is a VALID use of IP address 224.0.0.0/4?

Multicast

"This" network

Public-data networks

Cable television networks

Answer

Correct Answer: Multicast

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

125. Which of the following fields in the header of an IP packet will be decremented by one at each router?

The Type of Service

The Protocol Number

The Time to Live (TTL)

The Header Checksum

Answer

Correct Answer: The Time to Live (TTL)

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

126. The network number portion of the IP address is administered by which of the following?

All of the given options are valid

Reseaux IP Europeans (RIPE)

Asia Pacific Network Information Centre (APNIC)

American Registry for Internet Numbers (ARIN)

Answer

Correct Answer: All of the given options are valid

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

127. Which of the following IP addresses use 14 bits for the <network> and 16 bits for the <host> portion of the IP address?

Class C addresses

Class B addresses

Class A addresses

Class D addresses

Answer

Correct Answer: Class B addresses

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

128. Which of the following are reserved for future/experimental/test use?

Class C addresses

Class A addresses

Class D addresses

Class E addresses

Answer

Correct Answer: Class E addresses

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

129. What is the telecommunication protocol that all computers must use to be part of the Internet.

TCP

ARP

UDP

Answer

Correct Answer: IP

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

130. Which of the following type of IP addresses are suitable for networks with an extremely large number of hosts?

Class B addresses

Class C addresses

Class D addresses

Class A addresses

Answer

Correct Answer: Class A addresses

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

131. Which of the following addresses have : First 24 bits : Network address Last 8 bits : Local host address

Class A addresses

Class D addresses

Class C addresses

Class B addresses

Answer

Correct Answer: Class C addresses

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

132. Which of the following IP addresses are reserved for multicasting (broadcasting)?

Class A addresses

Class B addresses

Class D addresses

Class C addresses

Answer

Correct Answer: Class D addresses

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

133. Which of the following protocol adds no reliability, flow-control, or error recovery to IP and simply serves as a multiplexer/demultiplexer for sending and receiving datagrams, using ports to direct the datagrams?

Internet Protocol (IP)

Internet Control Message Protocol (ICMP)

Address Resolution Protocol (ARP)

User Datagram Protocol (UDP)

Answer

Correct Answer: User Datagram Protocol (UDP)

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

134. TCP is a "Blank" protocol.

Unreliable

Connectionless

Connection Oriented

Best Effort

Answer

Correct Answer: Connection Oriented

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

135. Which IP address is reserved for loopback testing?

0.0.0.0

192.168.1.1

127.0.0.1

127.256.0.1

Answer

Correct Answer: 127.0.0.1

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

136. You want to implement a mechanism that automates the IP configuration, including IP address, subnet mask, default gateway, and DNS information. Which protocol will you use to accomplish this?

SNMP

TFTP

ARP

SMTP

DHCP

Answer

Correct Answer: DHCP

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

137. Which of the following is a VALID dynamic routing protocol category?

Distance vector protocols

Link state protocols

Path vector protocols

All of the given options are valid

Answer

Correct Answer: All of the given options are valid

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

138. Which of the following networks major networks contain an incorrect subnet mask?

Class C with a mask 255.255.255.0 or /24

Class A with a mask 255.0.0.0 or /8

Class B with a mask 255.255.0.0 or /16

Class D with a mask 255.255.255.255 or /32

Answer

Correct Answer: Class D with a mask 255.255.255.255 or /32

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

139. Which of the following is private IP address?

168.172.19.39

12.0.0.1

172.15.14.36

192.168.24.43

Answer

Correct Answer: 192.168.24.43

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

140. Which of the following IP addresses use 24 bits for the <network> and 8 bits for the <host> portion of the IP address?

Class A addresses

Class B addresses

Class C addresses

Class D addresses

Answer

Correct Answer: Class C addresses

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

141. Which of the following is the maximum length of an IP datagram?

75,535 octets

65,536 octets

66,535 octets

65,535 octets

Answer

Correct Answer: 65,535 octets

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

142. Which of the following commands can be used on some IP hosts to list the details of fragmentation?

net

netstat

ipconfig

config

Answer

Correct Answer: netstat

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

143. Which of the following is NOT a valid class of IP addresses?

Class B

Class A

Class C

Class F

Answer

Correct Answer: Class F

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

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Basic TCP/IP MCQ

1. If i simplify the address 2001:0000:0000:00fe:0000:0000:0000:cdef, i get ________.

2. A popular network protocol is ____, which today is the backbone of the internet.

3. Which of the following ranges are reserved as private addresses?

4. What is the binary value of hex 9F?

5. State whether true or false. TCP is less reliable but faster than UDP.

6. How many hosts can you assign with a Class C network address using a subnet mask of 255.255.255.192..

7. What must be specified as part of a client reservation?

8. Which of the following is a universal and uniform numeric identifier for each computer on the network?

9. You have four Class C network addresses:203.200.5.0, 203.200.6.0, 203.200.7.0 and 203.200.8.0You want to combine these addresses into one logical network to increase the host IDs that you can have on one subnet. Which subnet mask should you assign?

10. Assuming that none of the hosts has cached the entries, how many ARP broadcasts would be required for a host on one subnet to communicate with a host on a remote subnet that is separated by a single router?

11. By default how many subnets can you create with a Class B network address using a subnet mask of 255.255.252.0?

12. What are some of the keywords that can be included in your LMHOSTS file?

13. Which of the following Protocols is used as a security Protocol and is also one of the secure encryption systems used in communication?

14. How do you resolve IP addresses locally?

15. How can a host resolve an IP address of another host located on the same subnet without needing to send a broadcast?

16. Which of the following address is reserved for loopback tests?

17. Which address classes cannot be assigned to host computers?

18. Which of the following is a Multicast Address?

19. What is the default subnet mask for a Class C network?

20. Which of the following addresses are reserved for multicasting?

21. How many hosts can a Class A network accommodate?

22. What is the default time-to-live (TTL) value for an entry in the ARP cache?

23. Which of the following is definitely a broadcast address for a class C network having Subnet Mask 255.255.255.0?

24. What is the maximum number of usable subnets that you can create in a class B network?

25. What is the broadcast address of IP address 172.16.10.0 with a subnet mask of 255.255.252.0?

26. Which class address has the beginning range of 192.0.0.1 and the ending range of 223.255.255.254?

27. Which utility should you use to test whether TCP/IP has been initialized on a computer?

28. On which layer of OSI (Open Systems Interconnection) model do TCP and UDP work?

29. What TCP/IP configuration settings are required for a computer to be able to communicate outside of its local subnet?

30. Which of the following Protocols use port number 25?

31. Which file transfer Protocol uses UDP as a transport Protocol and lacks security?

32. You have 350 computers spread across eight subnets with two DHCP servers. You want each workstation to receive an IP address even when one of the DHCP servers is down. What should you do?

33. Which protocol is used to transfer information between a WWW server and a WWW browser?

34. What is the purpose of the metric value in a routing table?

35. What is the maximum number of valid IP addresses in a class C network?

36. Which of the following Protocols can automatically provide IP address, subnet mask, default gateway and DNS server's IP address to a client on a network?

37. When is supernetting required?

38. At what point does a DHCP client attempt to renew its lease?

39. You have a Class B network and you plan to break it up into seven subnets. One subnet will be connected to the Internet, but you want all computers to have access to the Internet. How should you assign the subnet mask on the router for the networks?

40. Which Protocol uses port number 21?

41. What is the binary value of 157?

42. In TCP/IP, what is the Windowing mechanism used for?

43. Which of the following indicates a local class C subnet?

44. What is the port number used by HTTP?

45. How many hosts can you assign with a Class C network address using a subnet mask of 255.255.255.192?

46. What is the purpose of a DHCP relay agent?

47. Which are the two valid IP addresses in the subnets of 192.168.10.0 network with a subnet mask of 255.255.255.248?

48. After a host name is resolved to an IP address, what does a local host need to do next to communicate with the target host if the target host resides on the same subnet?

49. To which subnet does the IP address 10.120.100.255/18 belong to?

50. What is the class of IP address 128.10.15.24?

51. Your Company has a class C network. Your company requires 6 usable subnets, with 20 hosts in each subnet. Which subnet mask will you use?

52. If UDP receives datagrams that are not in a sequence, what will it do?

53. Which of the following is a valid host IP address?

54. Which of the following is a valid unicast IP address?

55. What is maximum number of hosts allowed on subnet 172.20.64.0/23?

56. How does ARP work when attempting to resolve the IP address of a destination host located on a different subnet?

57. Which one of the following addresses can be used as a host address for the subnet 200.100.10.64/27?

58. What kind of message can an SNMP agent generate?

59. What does the HOSTS file contain?

60. How is a subnet mask specified for supernetting?

61. If you have a subnet mask of /27 for a class C network, how many subnets and host per subnet will you get?

62. Which IP address class does the following IP address belong to? 78.34.6.90

63. What is the network ID of IP address 172.30.60.0/20?

64. Which protocols does SNMP use when sending messages between subnets?

65. Which protocol matches the remote host's physical address to a given IP address?

66. Which Protocol is used to find the IP address from the name of a website/host?

67. Your network has an IP of 150.150.0.0 and you need to divide it into multiple subnets. You need 600 host IDs for each subnet, with the largest amount of subnets available. Which subnet mask should you assign?

68. In which class of addresses does the first octet specify the network ID and the last three octets specify the host ID?

69. How can you prevent a DHCP server from assigning an IP address to a DHCP client when that address is within the range of addresses defined in a DHCP scope?

70. Which technique enables a single network address to span multiple physical networks?

71. How many subnets are available in a class B network with subnet mask of 255.255.255.0?

72. Which of the following Protocols is used for transferring electronic mail?

73. You have a Class A network address with 60 subnets. You need to add 40 new subnets in the next two years and still allow for the largest possible number of host IDs per subnet. Which subnet mask should you assign?

74. Which protocol does the ping command use when attempting to test whether a remote host is running?

75. Which statements are true regarding UDP?

76. What is the top-most level of the Internet domain name hierarchy called?

77. TCP is less reliable but faster than UDP.

78. Which Protocol is used to obtain the MAC address from a given IP address?

79. What is the maximum life time of an entry in the Dynamic ARP cache?

9.
You have four Class C network addresses:

203.200.5.0, 203.200.6.0, 203.200.7.0 and 203.200.8.0

You want to combine these addresses into one logical network to increase the host IDs that you can have on one subnet. Which subnet mask should you assign?