Download JNTUA MCA 2016 Nov 3rd Sem 9F00302 Computer Networks Question Paper

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Code: 9F00302

MCA II Semester Supplementary Examinations July 2015

COMPUTER NETWORKS

(For students admitted in 2009, 2010, 2011, 2012 and 2013 only)

Time: 3 hours Max Marks: 60

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Answer any FIVE questions

All questions carry equal marks

1. (a) Distinguish between TCP/IP model and OSI model.
   (b) Explain B-ISDN ATM reference model.
2. (a) Discuss framing techniques in brief.
   

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   (b) What do you mean by sliding window protocol? Distinguish between Go-back-N protocol and selective repeat protocol.
3. (a) What is ALOHA? Calculate throughput of pure ALOHA and slotted ALOHA.
   (b) Draw Ethernet frame format and explain each field.
4. (a) Explain shortest path routing.
   (b) What do you mean by congestion? State general principles of congestion control.

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5. (a) Distinguish between transparent and non-transparent fragmentation.
   (b) What is multicasting? Briefly discuss multicasting techniques and protocols.
6. (a) What are the functions of transport layer? State transport service primitives.
   (b) Discuss TCP transmission policy.
7. (a) Describe RSA algorithm with a suitable example.
   

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   (b) What is digital signature? Explain digital signature using message digests.
8. Write short notes on the following:
   (a) MIME.
   (b) HTTP.
   (c) SNMP.

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