Download JNTUH MCA 3rd Sem R17 2021 July-August 843AB Computer Networks Question Paper

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Code No: 843AB

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

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R17

MCA III Semester Examinations, July/August - 2021

COMPUTER NETWORKS

Time: 3 Hours Max.Marks:75

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Answer any five questions

All questions carry equal marks

1. Explain the TCP/IP reference model with a neat diagram. [15]
2. a) Compare optical fiber over copper wire.
   b) Explain Go-Back-N sliding window protocol with clear illustrations. [7+8]

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3. a) What is pure ALOHA and slotted ALOHA? Explain.
4. Discuss the stop and wait ARQ protocol in detail. [7+8]
5. a) Write a short note on:
   b) i-persistent CSMA
   c) Non-persistent CSMA
   

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   d) P-persistent CSMA. [5+5+5]
6. a) Compare Virtual-Circuit and Datagram Networks.
7. Draw and explain the header format of IPv6. [7+8]
8. a) Explain the five parts of the link state routing with an example.
   b) Discuss Dynamic Host Configuration Protocol and Address Resolution Protocol. [7+8]

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9. a) Differentiate between UDP and TCP.
   b) Explain Congestion control algorithms in detail. [7+8]
10. a) Differentiate between FTP and HTTP.
    b) Give a brief explanation about Electronic mail. [7+8]

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