Computer Networks
The main objective of this course is to introduce the understanding of the concept of computer networking with its layers, topologies, protocols & standards, IPv4/IPv6 addressing, Routing and Latest Networking Standards
Tribhuvan University
Institute of Science and Technology
Cn Model Qn
Bachelor Level / fourth-semester / Science
Computer Science and Information Technology( CSC263 )
Computer Networks
Full Marks: 60 + 20 + 20
Pass Marks: 24 + 8 + 8
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
Attempt any two questions.
Suppose you are assigned to design a LAN for an office having 3 departments. Each department will have 50 computers locating in 10 rooms each equipped with 5 computers. Make your own justification while selecting connecting devices and acccessories.
Highlight on the importance of routing algorithm. Explain Distance Vector Routing algoriithm and compare it with link state routing.
Explain various congestion control approaches.
Section B
Attempt any eight questions.
Is 192.16.144.64/27 a host, network, or broadcast address? In which layer of OSI model do Hub, Switch and Router operate on?
Describe the working procedure of Token bus and Token ring.
Why do you think network traffic analysis is carried out? How does IPv6 overcome the disadvantages of IPv4?
Find Hamming code for data 01100111.
Differentiate between frame relay and ATM.
What is the function of proxy server? Explain about electronic mail.
Demonstrate the use of socket programming for creating network application using UDP and TCP with necessary diagrams.
Explain DNS with reference to its hierarchy and records.
Write short notes on (any two):
a. Firewall
b. Packet switching
c. NGN