CSIT 4th Semester
Computer Networks Board Question Paper 2080

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CSC 263-2080 ✡

Tribhuvan University

Institute of Science and Technology

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Bachelor Level/Second Year/Fourth Semester/Science
Bachelors in Computer Science and Information Technology (CSC 263)
(Computer Networks)
(New Course)
Full Marks: 60 Pass Marks: 24 Time: 3 hours

Candidates are required to give their answers in their own words as far as practicable.
The figures in the margin indicate full marks.

Section A
Long Answer Questions
Attempt any Two questions.
[2x10=20]
1.

What is classful addressing? Explain link state routing with a suitable example.

2.

What is flow control? How does stop-and-wait ARQ protocol handle error? What are its disadvantages?

3.

Explain TCP header with a neat diagram. Highlight on its uses.

Section B

Attempt any Eight questions

[8×5=40]
4.

Explain different types of network topologies.

5.

What do you understand by circuit switching? Explain. What are its advantages and disadvantages?

6.

State the functionality of logical link control. Briefly explain HDLC.

7.

Differentiate between unicast and multicast routing.

8.

What is the difference between port and socket? Explain leaky bucket algorithm with an example.

9.

What do you understand by DNS? Explain FTP and SFTP.

10.

Explain the architecture of SDN.

11.

Suppose you are given an IP address 192.168.0.0, perform subnetting and divide the given network into 2 subnets. Calculate total number of hosts that can be configured, range of the IP addresses.

12.

Write short notes on:
a. IPv4
b. Infrared