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.

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 4 of 15

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Q31.

Consider a 128×10 3 bits/second satellite communication link with one way propagation delay of 150 milliseconds. Selective retransmission (repeat) protocol is used on this link to send data with a frame size of 1 kilobyte. Neglect the transmission time of acknowledgement. The minimum number of bits required for the sequence number field to achieve 100% utilization is ___________

Discuss

Answer: (b).4

Q32.

How many bytes of data can be sent in 15 seconds over a serial link with baud rate of 9600 in asynchronous mode with odd parity and two stop bits in the frame?

10,000 bytes

12,000 bytes

15,000 bytes

27,000 bytes

Discuss

Answer: (b).12,000 bytes

Q33.

A 1Mbps satellite link connects two ground stations. The altitude of the satellite is 36,504 km and speed of the signal is 3 × 10^8 m/s. What should be the packet size for a channel utilization of 25% for a satellite link using go-back-127 sliding window protocol? Assume that the acknowledgment packets are negligible in size and that there are no errors during communication.

120 bytes

60 bytes

240 bytes

90 bytes

Discuss

Answer: (a).120 bytes

Q34.

The minimum frame size required for a CSMA/CD based computer network running at 1 Gbps on a 200m cable with a link speed of 2 × 10^8m/s is

125 bytes

250 bytes

500 bytes

None of these

Discuss

Answer: (b).250 bytes

Q35.

In an IPv4 datagram, the M bit is 0, the value of HLEN is 10, the value of total length is 400 and the fragment offset value is 300. The position of the datagram, the sequence numbers of the first and the last bytes of the payload, respectively are

Last fragment, 2400 and 2789

First fragment, 2400 and 2759

Last fragment, 2400 and 2759

Middle fragment, 300 and 689

Discuss

Answer: (c).Last fragment, 2400 and 2759

Q36.

Consider a source computer(S) transmitting a file of size 106 bits to a destination computer(D)over a network of two routers (R1 and R2) and three links(L1, L2, and L3). L1connects S to R1; L2 connects R1 to R2; and L3 connects R2 to D.Let each link be of length 100 km. Assume signals travel over each link at a speed of 108 meters per second.Assume that the link bandwidth on each link is 1Mbps. Let the file be broken down into 1000 packets each of size 1000 bits. Find the total sum of transmission and propagation delays in transmitting the file from S to D?

1005 ms

1010 ms

3000 ms

3003 ms

Discuss

Answer: (a).1005 ms

Q37.

One of the header fields in an IP datagram is the Time to Live(TTL)field.Which of the following statements best explains the need for this field?

It can be used to prioritize packets

It can be used to reduce delays

It can be used to optimize throughput

It can be used to prevent packet looping

Discuss

Answer: (d).It can be used to prevent packet looping

Q38.

For which one of the following reasons does Internet Protocol (IP) use the time-to- live (TTL) field in the IP datagram header

Ensure packets reach destination within that time

Discard packets that reach later than that time

Prevent packets from looping indefinitely

Limit the time for which a packet gets queued in intermediate routers

Discuss

Answer: (c).Prevent packets from looping indefinitely

Q39.

Consider the following three statements about link state and distance vector routing protocols, for a large network with 500 network nodes and 4000 links.

[S1] The computational overhead in link state protocols
is higher than in distance vector protocols.
[S2] A distance vector protocol (with split horizon)
avoids persistent routing loops, but not a link
state protocol.
[S3] After a topology change, a link state protocol
will converge faster than a distance vector
protocol.

Which one of the following is correct about S1, S2, and S3 ?

S1, S2, and S3 are all true

S1, S2, and S3 are all false

S1 and S2 are true, but S3 is false

S1 and S3 are true, but S2 is false

Discuss

Answer: (d).S1 and S3 are true, but S2 is false

Q40.

Which one of the following is TRUE about interior Gateway routing protocols - Routing Information Protocol (RIP) and Open Shortest Path First (OSPF)?

RIP uses distance vector routing and OSPF uses link state routing

OSPF uses distance vector routing and RIP uses link state routing

Both RIP and OSPF use link state routing

Both RIP and OSPF use distance vector routing

Discuss

Answer: (a).RIP uses distance vector routing and OSPF uses link state routing

Page 4 of 15

Welcome to the Networking MCQs Page

Networking MCQs | Page 4 of 15

Explore more Topics under GATE CSE Exam

Operating System

Data Structures and Algorithms

Computer Architecture

DBMS

Compiler Design

Theory of Computation(TOC)

Engineering Mathematics

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