Questions
Syllabus
Qns. By Syllabus

Semester

Subject

Year

Tribhuwan University

Institute of Science and Technology

2080.1

Bachelor Level / Second Year / Fourth Semester / Science

B.Sc in Computer Science and Information Technology (CSC263)

(Computer Networks)

Full Marks: 60

Pass Marks: 24

Time: 3 Hours

Candidates are required to give their answers in their own words as for as practicable.

The figures in the margin indicate full marks.

Section A

Long Answers Questions

Attempt any TWO questions.
[2*10=20]
1.
What is classful addressing? Explain link state routing with a suitable example.[10]
2.
What is flow control? How does stop-and-wait ARQ protocol handle error? What are its disadvantages.[10]
3.
Explain TCP header with a neat diagram. Highlight on its uses.[10]
Section B

Short Answers Questions

Attempt any Eight questions.
[8*5=40]
4.
Explain different types of network topologies. [5]
5.
What do you understand by circuit switching? Explain. What are its advantage and disadvantage? [5]
6.
State the functionality of logical link control. Briefly explain HDLC. [5]
7.
Differentiate between unicast and multicast routing. [5]
8.
What is the difference between port and socket? Explain leaky bucket algorithm with example. [5]
9.
What do you understand by DNS? Explain FTP and SFTP. [5]
10.
Explain architecture of SDN. [5]
11.
Write short notes on : a. IPv4 b. Infrared [5]
12.
Suppose you are given an IP address 192.168.0.0, perform subnetting and divide the given network in 2 subnets. Calculate total number of host that can be configured, range of IP address. [5]