Questions
Syllabus
Qns. By Syllabus

Semester

Subject

Year

Tribhuwan University

Institute of Science and Technology

2078

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 transmission media? How do guided media differ from unguided media? Explain different types of guided media in detail. [10]
2.
What is flow control? Explain Stop-and-Wait ARQ with suitable example. How is it different from G-Back-N ARQ? [10]
3.
Explain link state routing with example. [10]
Section B

Short Answers Questions

Attempt any Eight questions.
[8*5=40]
4.
Explain client/server network. How is it different from peer to peer network? [5]
5.
What is CSMA/CD? Why is there no need for CSMA/CD on a full-duplex Ethernet LAN? [5]
6.
Explain the structure of IPv6 address. Compare IPv6 address with IPv4 address. [5]
7.
What is virtual circuit network? Explain ATM as a virtual circuit wide area network. [5]
8.
What is routing table? Differentiate static routing table with dynamic routing table. [5]
9.
What is open-loop congestion control? Compare it with closed-loop congestion control. [5]
10.
What are the different approaches for multimedia streaming? Explain. [5]
11.
Write short note on (any two): a. Backbone network b. ISDN c. Signal [5]
12.
What subnet ID and broadcast address of each subnet if you divide a class B network (150.10.0.0 – 150.10.255.255) in 4 different subnets. What is the new subnet mask? [5]