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ProgramsBSC CSITSemester 4Computer Networks 2079

BSC CSIT Semester 4 – Computer Networks 2079 TU Final Exam Questions & Answers

12 Questions•75 Marks•TU

Tribhuvan University

Institute of Science and Technology

2079

Bsc CSIT / Semester 4 / Science

Computer Science and Information Technology

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 question.

1

What is protocol? Explain each layer of OSI modal in detail.

2

Differentiate error detection with error correction. Explain CRC (Cyclic Redundancy Check) method for error detection with a suitable example.

3

Explain distance vector routing with example.

SECTION B

Attempt any EIGHT question.

4

Why do we need network topology? Explain star topology along with its merits and demerits.

5

Define Protocol. Why do we need standards?

6

Write the subnet ID and broadcast address of each subnet if you divide a class C network (192.168.3.0– 192.168.3.255) into 4 different subnets. What is the new subnet mask?

7

What is circuit-switched network? Explain phases during communication in a circuit-switched network?

8

What is a virtual circuit network? Explain frame relay as a virtual circuit-wide area network.

9

Why TCP is called a connection-oriented and reliable protocol? Differentiate TCP with UDP.

10

Explain architecture of WWW. What is URL?

11

Explain in brief about software defined network? What are its features?

12

Write short notes on (any TWO):
a. Protocol and standards
b. Switch
c. Checksum

Showing 12 questions

*** END OF QUESTION PAPER ***

Exam Years

Computer Networks 2079 TU Final Past Questions

What is protocol? Explain each layer of OSI modal in detail.

Marks: 10

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

Protocol and OSI Model --- Protocol Definition: A protocol is a set of rules and conventions that governs how data is transmitted, received, and interpreted over a network between two or more devic

Differentiate error detection with error correction. Explain CRC (Cyclic Redundancy Check) method for error detection with a suitable example.

Marks: 10

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

Error Detection vs Error Correction & CRC --- 1. Difference Between Error Detection and Error Correction | Feature | Error Detection | Error Correction | |---------|----------------|-----------------

Explain distance vector routing with example.

Marks: 10

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

Distance Vector Routing --- 1. Definition: Distance Vector Routing is a routing algorithm in which each router maintains a table (vector) of the best known distance to every other router and the dire

Why do we need network topology? Explain star topology along with its merits and demerits.

Marks: 5

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

Network Topology --- 1. Why do we need Network Topology? Network topology defines the physical or logical arrangement of nodes and links in a network. It is important because: - Determines how devi

Define Protocol. Why do we need standards?

Marks: 5

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

Protocol: A protocol is a set of rules and conventions that govern how data is transmitted and received over a network. It defines: - How communication starts and ends. - How errors are detected and c

Write the subnet ID and broadcast address of each subnet if you divide a class C network (192.168.3.0– 192.168.3.255) into 4 different subnets. What is the new subnet mask?

Marks: 5

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

Given: Class C network: 192.168.3.0 – 192.168.3.255 Requirement: Divide into 4 subnets. --- Step 1: Determine new subnet mask - Original Class C mask: 255.255.255.0 (/24) - Need 4 subnets → 2 bit

What is circuit-switched network? Explain phases during communication in a circuit-switched network?

Marks: 5

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

Circuit-Switched Network A circuit-switched network is a type of network in which a dedicated communication path (circuit) is established between two nodes for the entire duration of the communication

What is a virtual circuit network? Explain frame relay as a virtual circuit-wide area network.

Marks: 5

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

Virtual Circuit Network A Virtual Circuit (VC) Network is a type of packet-switched network where a logical connection (virtual circuit) is established between the sender and receiver before any data

Why TCP is called a connection-oriented and reliable protocol? Differentiate TCP with UDP.

Marks: 5

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

Why TCP is Connection-Oriented and Reliable TCP (Transmission Control Protocol) is called connection-oriented because: 1. Before any data is sent, a connection is established between the sender and

Explain architecture of WWW. What is URL?

Marks: 5

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

Architecture of WWW and URL Architecture of WWW (World Wide Web) The World Wide Web (WWW) is a system where information is stored and accessed through web pages using the internet. It follows a clien

Explain in brief about software defined network? What are its features?

Marks: 5

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

Software Defined Network (SDN) Software Defined Networking (SDN) is a modern networking approach where the control of the network is separated from the physical devices and handled by software. It a

Write short notes on (any TWO):\ a. Protocol and standards\ b. Switch\ c. Checksum

Marks: 5

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

Short Notes (Any Two) --- a. Protocol and Standards A protocol is a set of rules that govern how data is communicated between devices in a network. It ensures that devices from different manufactur

About Computer Networks Past Questions

This page contains the complete 2079 TU Final examination paper for Computer Networks , part of the BSC CSIT Semester 4 curriculum. All questions are from official Tribhuvan University (TU) exam papers.

How to Use This Resource

  • Practice each question thoroughly before checking the answer
  • Use the answers as reference to understand the expected format
  • Time yourself to simulate exam conditions
  • Review chapter concepts if you struggle with any question
  • Link to specific questions using #q1, #q2, etc. in the URL

Related Resources

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Computer Networks 2079 TU Final past questions with answers for BSC CSIT students in Nepal. Prepare for Tribhuvan University (TU) exams with our comprehensive question bank and model answers.

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