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Welcome to the Networking MCQs Page

Dive deep into the fascinating world of Networking with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Networking, a crucial aspect of GATE CSE Exam. In this section, you will encounter a diverse range of MCQs that cover various aspects of Networking, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within GATE CSE Exam.

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Check out the MCQs below to embark on an enriching journey through Networking. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of GATE CSE Exam.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Networking. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Networking MCQs | Page 7 of 15

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Q61.
In the TCP/IP protocol suite, which one of the following is NOT part of the IP header?

a.

Fragment Offset

b.

Source IP address

c.

Destination IP address

d.

Destination port number

Discuss
Answer: (d).Destination port number
Q62.
Suppose that the maximum transmit window size for a TCP connection is 12000 bytes. Each packet consists of 2000 bytes. At some point of time, the connection is in slow-start phase with a current transmit window of 4000 bytes. Subsequently, the transmitter receives two acknowledgements. Assume that no packets are lost and there are no time-outs. What is the maximum possible value of the current transmit window?

a.

4000 bytes

b.

8000 bytes

c.

10000 bytes

d.

12000 bytes

Discuss
Answer: (b).8000 bytes
Q63.
Traceroute reports a possible route that is taken by packets moving from some host A to some other host B. Which of the following options represents the technique used by traceroute to identify these hosts

a.

By progressively querying routers about the next router on the path to B using ICMP packets, starting with the first router

b.

By requiring each router to append the address to the ICMP packet as it is forwarded to B. The list of all routers en-route to B is returned by B in an ICMP reply packet

c.

By ensuring that an ICMP reply packet is returned to A by each router en-route to B, in the ascending order of their hop distance from A

d.

By locally computing the shortest path from A to B

Discuss
Answer: (a).By progressively querying routers about the next router on the path to B using ICMP packets, starting with the first router
Q64.
Count to infinity is a problem associated with

a.

link state routing protocol

b.

distance vector routing protocol

c.

DNS while resolving host name

d.

TCP for congestion control

Discuss
Answer: (b).distance vector routing protocol
Q65.
In a communication network, a packet of length L bits takes link L1 with a probability of p1or link L2 with a probability of p2. Link L1 and L2 have bit error probability of b1 and b2 respectively. The probability that the packet will be received without error via either L1 or L2 is

a.

(1 - b1)Lp1 + (1 - b2)Lp2

b.

[1 - (b1 + b2)L]p1p2

c.

(1 - b1)L (1 - b2)Lp1p2

d.

1 - (b1Lp1 + b2Lp2)

Discuss
Answer: (a).(1 - b1)Lp1 + (1 - b2)Lp2
Q66.
A company has a class C network address of 204.204.204.0. It wishes to have three subnets, one with 100 hosts and two with 50 hosts each. Which one of the following options represents a feasible set of subnet address/subnet mask pairs?

a.

204.204.204.128/255.255.255.192 204.204.204.0/255.255.255.128 204.204.204.64/255.255.255.128

b.

204.204.204.0/255.255.255.192 204.204.204.192/255.255.255.128 204.204.204.64/255.255.255.128

c.

204.204.204.128/255.255.255.128 204.204.204.192/255.255.255.192 204.204.204.224/255.255.255.192

d.

204.204.204.128/255.255.255.128 204.204.204.64/255.255.255.192 204.204.204.0/255.255.255.192

Discuss
Answer: (d).204.204.204.128/255.255.255.128 204.204.204.64/255.255.255.192 204.204.204.0/255.255.255.192
Q67.
Assume that "host1.mydomain.dom" has an IP address of 145.128.16.8. Which of the following options would be most appropriate as a subsequence of steps in performing the reverse lookup of 145.128.16.8? In the following options "NS" is an abbreviation of "nameserver".

a.

Query a NS for the root domain and then NS for the "dom" domains

b.

Directly query a NS for "dom" and then a NS for "mydomain.dom" domains

c.

Query a NS for in-addr.arpa and then a NS for 128.145.in-addr.arpa domains

d.

Directly query a NS for 145.in-addr.arpa and then a NS for 128.145.in-addr.arpa domains

Discuss
Answer: (c).Query a NS for in-addr.arpa and then a NS for 128.145.in-addr.arpa domains
Q68.
An IP datagram of size 1000 bytes arrives at a router. The router has to forward this packet on a link whose MTU (maximum transmission unit) is 100 bytes. Assume that the size of the IP header is 20 bytes. The number of fragments that the IP datagram will be divided into for transmission is :

a.

10

b.

50

c.

12

d.

13

Discuss
Answer: (d).13
Q69.
Which of the following statements is TRUE ?

a.

Both Ethernet frame and IP packet include checksum fields

b.

Ethernet frame includes a checksum field and IP packet includes a CRC field

c.

Ethernet frame includes a CRC field and IP packet includes a checksum field

d.

Both Ethernet frame and IP packet include CRC fields

Discuss
Answer: (c).Ethernet frame includes a CRC field and IP packet includes a checksum field
Q70.
Two popular routing algorithms are Distance Vector(DV) and Link State (LS) routing. Which of the following are true?
(S1) Count to infinity is a problem only with DV and not LS routing
(S2) In LS, the shortest path algorithm is run only at one node
(S3) In DV, the shortest path algorithm is run only at one node
(S4) DV requires lesser number of network messages than LS

a.

S1, S2 and S4 only

b.

S1, S3 and S4 only

c.

S2 and S3 only

d.

S1 and S4 only

Discuss
Answer: (d).S1 and S4 only
Page 7 of 15

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