Download JNTUA MCA 2014 Oct Supply 3rd Sem 9F00302 Computer Networks Question Paper

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Code: 9F00302

MCA II Semester Supplementary Examinations September/October 2014

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COMPUTER NETWORKS

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

Time: 3 hours Max Marks: 60

Answer any FIVE questions

All questions carry equal marks

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1. Differentiate between OSI reference model and TCP/IP model.
2. Explain the characteristics of twisted pair cable.
3. Explain the term sliding window. Illustrate and explain the operation of selective repeat.
4. List and explain the services provided by data link layer.
5. Explain the functions of repeaters and bridges. What are their limitations?

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6. Discuss in brief MAC frame structure for IEEE 802.3.
7. Explain the count-to-infinity problem and solution in distance vector routing.
8. Give the general principles of various congestion control algorithms.
9. Explain about fragmentation.
10. Discuss in detail about the routing in the internetworking.

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11. Explain the flow control mechanism in transport layer.
12. Define UDP and discuss the different fields of the format of a used datagram. List out the uses of UDP protocol.
13. Explain the message authentication operation used in RSA technique.
14. What is meant by firewall? Explain the types of firewall.
15. What is electronic mail? Explain the two scenarios of architecture of e-mail.

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16. What is a name server? List and explain the features of various name servers.

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