BSC CSIT Semester 4 – Computer Networks 2080 TU Final Exam Questions & Answers

Question 1

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

Marks: 10

Chapter: Unit 4: Network Layer (10Hrs.)

Classful addressing is an old method of assigning IP addresses, where the 32-bit IP address is divided into network ID and host ID parts based on fixed boundaries (known as classes). There are five cl

Question 2

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

Marks: 10

Chapter: Unit 3: Data Link Layer (8Hrs.)

Flow Control and Stop-and-Wait ARQ Protocol --- 1. Flow Control Definition: Flow control is a technique used in data communication to regulate the rate of data transmission between a sender and re

Question 3

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

Marks: 10

Chapter: Unit 5: Transport Layer (6Hrs.)

TCP (Transmission Control Protocol) is a connection-oriented, reliable, and byte-stream transport layer protocol. It ensures that data is delivered accurately and in sequence between two communicati

Question 4

Explain different types of network topologies

Marks: 5

Chapter: Unit 1: Introduction to Computer Network (6Hrs.)

1. Introduction: A network topology refers to the arrangement or structure of how computers, cables, and other network devices are connected to each other. It shows the physical or logical layout of

Question 5

What do you understand by circuit switching? Explain. What are its advantage and disadvantage ?

Marks: 5

Chapter: Unit 4: Network Layer (10Hrs.)

Definition Circuit switching is a communication method in which a dedicated communication path (circuit) is established between two devices for the entire duration of the communication. - Commonly u

Question 6

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

Marks: 5

Chapter: Unit 3: Data Link Layer (8Hrs.)

Logical Link Control (LLC) and HDLC 1. Logical Link Control (LLC) Definition: LLC is a sublayer of the Data Link Layer (Layer 2) in the OSI model that provides logical addressing and control funct

Question 7

Differentiate between unicast and multicast routing

Marks: 5

Chapter: Unit 4: Network Layer (10Hrs.)

Unicast vs Multicast Routing | Feature | Unicast Routing | Multicast Routing | |--------------------------|----------------------------

Question 8

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

Marks: 5

Chapter: Unit 5: Transport Layer (6Hrs.)

Port vs Socket & Leaky Bucket Algorithm 1. Port vs Socket | Feature | Port | Socket | |----------------|--

Question 9

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

Marks: 5

Chapter: Unit 6: Application Layer (7Hrs.)

DNS, FTP, and SFTP 1. DNS (Domain Name System) Definition: DNS is a system that translates human-readable domain names (like www.example.com) into IP addresses (like 192.168.1.1) used by computers

Question 10

Explain architecture of SDN.

Marks: 5

Chapter: Unit 7: Multimedia &Future Networking (4Hrs.)

1. Definition Software Defined Networking (SDN) is a network architecture that separates the control plane from the data plane, allowing centralized and programmable network management. --- 2. SDN Ar

Question 11

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.

Marks: 5

Chapter: Unit 4: Network Layer (10Hrs.)

Given: - IP Address: 192.168.0.0 - Requirement: Divide into 2 subnets --- 1. Step 1: Determine Default Class - 192.168.0.0 belongs to Class C (IP range 192.0.0.0 – 223.255.255.255) - Default su

Question 12

Write short notes on : a. IPv4 b. Infrared

Marks: 5

Chapter: Unit 4: Network Layer (10Hrs.)

a. IPv4 (Internet Protocol Version 4) Definition: IPv4 is a 32-bit addressing protocol used to identify devices on a network. It is the most widely used version of the Internet Protocol. Key Feature

BSC CSIT Semester 4 – Computer Networks 2080 TU Final Exam Questions & Answers

Tribhuvan University

Institute of Science and Technology

SECTION A

SECTION B

Exam Years