B.TechSemester 62021-22Data Communication NetworksKEC063
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Data Communication Networks (KEC063) - AKTU Question Paper 2021-22

B.Tech · Semester 6 · Free PDF Download

This is the official AKTU Data Communication Networks Previous Year Question Paper for B.Tech Semester 6, academic session 2021-22. 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:2021-22
University:AKTU / UPTU

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Questions Asked in 2021-22

Data Communication Networks (KEC063) — complete question paper

Section AAttempt All of the following Questions in brief Marks(10X2=20) CO
  • a
    Identify the five components of a data communication system. 1
  • b
    Why are protocols needed? 1
  • c
    What is the purpose of cladding in an optical fiber? 2
  • d
    Define framing and the reason for its need. 2
  • e
    Do we need a multiple access protocol when we use the local loo p of the telephone company to access the Internet? Why?
  • f
    Compare the data rates for Standard Ethernet, Fast Ethernet, G igabit Ethernet, and Ten- Gigabit Ethernet
  • g
    Change the following IPv4 addresses from dotted- decimal notat ion to binary notation
  • h
    List three transition strategies to move from IPv4 to IPv6. 4 Q1(i) What is the maximum size of the process data that can be encap sulated in a UDP datagram? Q1(j) How is HTTP related to WWW? 5
Section BAttempt ANY THREE of the following Questions Marks(3X10=30) CO
  • a
    How does information get passed from one layer to the next in the Internet model? A system is using NRZ-I to transfer 10-Mbps data. What are the av erage signal rate and minimum bandwidth?
  • b
    (i) What is the position of the transmission media in the OSI or the Internet model? (ii) Define piggybacking and its usefulness
  • c
    Describe the working principle and architecture of Bluetooth 802.11 standard. 3
  • d
    Give a detailed account on Classful and Classless Addressing in IPv4 protocol. Also, define Address depletion issue
  • e
    Describe the working of Asymmetr ic and Symmetric Key Cryptograp hy using suitable diagrams
Section CAttempt ANY ONE following Question Marks (1X10=10) CO
  • a
    Illustrate the fundamental chara cteristics of data communicatio n system along with various maturity levels of internet standards
  • b
    Categorize the four basic topologies in term of line configuration and explain it. 1
Section CAttempt ANY ONE following Question Marks (1X10=10) CO
  • a
    Explain the working of point-to- point protocol. Discuss frame f ormat for point-to- point protocol
  • b
    Design two simple algorithms for bit-stuffing. The first adds b its at the sender; the second removes bits at the receiver
Section CAttempt ANY ONE following Question Marks (1X10=10) CO
  • a
    Discuss Ethernet in brief. Also explain binary back-off algorithm. 3
  • b
    How do we say collision detection is analog process? Why do we prefer CSMA over ALOHA? Prove that maximum efficiency of ALOHA is 1/e
Section CAttempt ANY ONE following Question Marks (1X10=10) CO
  • a
    What is congestion and what are the causes of congestion? Expla in token bucket algorithm of congestion control
  • b
    Define fragmentation and explain why the IPv4 and IPv6 protocols need to fragment some packets. Is there any difference between the two protocols in this matter?
Section CAttempt ANY ONE following Question Marks (1X10=10) CO
  • a
    Compare the TCP header and the UDP header. List the fields in t he TCP header that are missing from UDP header. Give the reason for their absence
  • b
    Write short notes on : (i) MIME (ii) HTTP Transaction 5

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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