B.TechSemester 62024-25Computer NetworksBCS603
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Computer Networks (BCS603) - AKTU Question Paper 2024-25

B.Tech · Semester 6 · Free PDF Download

This is the official AKTU Computer Networks Previous Year Question Paper for B.Tech Semester 6, academic session 2024-25. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.

Course:B.Tech
Semester:Semester 6
Session:2024-25
University:AKTU / UPTU

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Questions Asked in 2024-25

Computer Networks (BCS603) — complete question paper · 70 marks · 3 Hours

Section AAttempt all questions in brief. 02 x 7 = 14
  • a
    Determine the number of links needed for a fully connected mesh t o p o l o g y w i t h 1 0 nodes
  • b
    A signal is transmitted with an initial power of 2W and experie nces an attenuation of - 3 dB. Calculate the received power
  • c
    In what situations, contention-based MAC Protocols are suitable?
  • d
    Illustrate the concept of ‘piggybacking’
  • e
    List the functions of all layers in OSI reference model using a well labelled diagram
  • f
    List various policies that are used for congestion control
  • g
    What is the role of stub in Remote Procedure Call (RPC) mechanism?
Section BAttempt any three of the following: 07 x 3 = 21
  • a
    A bit stream x 8+x6+x3+x2+x+1 is transmitted using CRC method. The generator polynomial is x 4+x2+x+1. Show the actual codeword transmitted at the receiver side . Suppose the third bit from left i s inverted during transmission . Show that this error is detected at the receiver end
  • b
    A company is assigned the address block 192.168.10.0/24. Divide it into 4 subnets and specify subnet ranges
  • c
    Define Leaky Bucket Algorithm. How does Token Bucket Algorithm provide better traffic shaping control?
  • d
    Explain public key cryptography. List its advantages and disadv antages. Explain the working of RSA algorithm with suitable example
  • e
    Describe the following: (i) SNMP (ii) DNS iii) Data Compression
Section CAttempt any one part of the following: 07 x 1 = 07
  • a
    Illustrate the concept of slotted ALOHA with suitable diagram. Measurement of slotted ALOHA channel with infinite number of users shows that 10% of slots are idle. Calculate i) What is the channel load ? ii) What is the throughput ?
  • b
    A 4 MB frame is transmitted over a 1000 KM link with 2 Mbps ban dwidth. Propagation speed is 2×10⁸ m/s. Compute total delay (latency) if there are 5 routers, each with 1 μs processing and 2 μs queuing delay
  • a
    Discuss how the count-to-infinity problem occurs in Distance Ve ctor Routing. Suggest any one method to mitigate it. 3 K3 For the following subnet, distance vector routing is used and t he vectors that have just come into router C: from B: (5, 0, 8, 12, 6, 2); from D: (16, 1 2, 6, 0, 9, 10); and from E: (7, 6, 3, 9, 0, 4). The measured delays to B, D and E are 6, 3, and 5 respectively. Calculate C's new routing table. Give both the outgoing line to use and the expected delay
  • a
    Explain new features in IPv6 over IPv4. What is the purpose of multiple headers? Explain in brief, how IPv6 handles multiple headers
  • b
    Explain the following: (i) RARP (ii) DHCP (iii) VPN
  • a
    What is Silly Window Syndrome? E xplain how sender and receiver can avoid it using Nagle's and Clark’s algorithms
  • b
    Explain TCP segment header. Also, illustrate the TCP connection management
  • a
    Explain how SMTP can handle transfer of videos and images? Also , explain the advantages of IMAP4 over POP3 mail access protocols
  • b
    Explain the following: (i) FTP (ii) HTTP iii) Telnet

Question text is extracted from the official AKTU question paper PDF above. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.

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