MCASemester 32023-24Computer NetworkKCA-303
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Computer Network (KCA-303) - AKTU Question Paper 2023-24

MCA · Semester 3 · Free PDF Download

This is the official AKTU Computer Network Previous Year Question Paper for MCA Semester 3, academic session 2023-24. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.

Course:MCA
Semester:Semester 3
Session:2023-24
University:AKTU / UPTU

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Questions Asked in 2023-24

Computer Network (KCA-303) — extracted question text · 100 marks · 3 Hours

Section AAttempt all q u e s t i o n s i n b r i e f .
  • a
    Identify the five components of a data communication system. 2 1
  • b
    Discuss the differences between simplex, half-duplex, and full -duplex communication
  • c
    Explain various types of data errors in data communication. 2 4
  • d
    Define the term piggybacking. 2 2
  • e
    Differentiate between Datagram approach and Virtual circuit approach. 2 2
  • f
    Define the function of router? 2 3
  • g
    What are the characteristics of data communication? 2 1
  • h
    What are the advantages of using Port numbers? 2 4 i. Define security goals of Information. 2 3 j. What is a firewall, and how do es it contribute to network security? 2 1
Section BAttempt any three o f t h e f o l l o w i n g :
  • a
    With a neat diagram, explain OSI reference model. 10 4
  • b
    Explain different error detection and correction mechanisms used in data communication
  • c
    Define switching. Briefly explain about Packet Switching, Me ssage Switching and Circuit Switching
  • d
    Explain a congestion control algorithm. 10 5
  • e
    Write short notes on a) VPN b) NAT 10 4
Section CAttempt any one p a r t o f t h e f o l l o w i n g :
  • a
    Explain the various media used for data transmission in comp uter networks. 10 4
  • b
    Describe the relative advantages and disadvantages of STAR, MESH, RING and BUS topologies
  • a
    Briefly explain the various media access protocol. 10 4
  • b
    A bit stream 1010101010 is tran smitted using the standard CRC method. The generator polynomial is x4+x3+1. What is the actual bit string transmitted?
  • a
    Describe fragmentation. How does the network layer handle fragmentation and reassembly of data packets during transmission?
  • b
    What is Internet Protocol ( IP)? State and describe various classes used for IP addressing
  • a
    Write short notes on a) UDP b) TCP c) SCTP 10 2
  • b
    Describe the QoS and explain techniques to improve QoS. 10 4
  • a
    What is significance of crypt ography? Compare between public-key and private key cryptography
  • b
    Write short notes on i) Doma in Name System ii) Hyper Text Transfer Protocol iii) World Wide Web iv)TELNET

Question text is extracted from the official AKTU question paper PDF above. Check the original PDF for equations, diagrams and complete wording. Extracted: 2026-08-23.

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