Download JNTUH MCA 3rd Sem R15 2018 January 823AE Computer Networks Question Paper

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Code No: 823AE

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JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA III Semester Examinations, January - 2018

COMPUTER NETWORKS

Time: 3hrs Max.Marks:75

Note: This question paper contains two parts A and B.

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Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.

PART - A 5 x 5 Marks =25

1. a) Write about TCP/IP reference model. [5]
2. b) Discuss the internetworking devices Hub, Router and Gateway. [5]
3. c) Explain flooding routing algorithm. [5]

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4. d) Explain the use of tunneling. [5]
5. e) What is HTTP and explain its request methods? [5]

PART -B 5 x 10 Marks =50

2. Discuss data link layer design issues. [10]

   OR

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3. a) Explain selective repeat sliding window protocol with an example. b) Discuss about Internet standards. [5+5]
4. a) Explain frame format of IEEE 802.3 standard Ethernet. b) Explain working of CSMA/CD. [5+5]

   OR

5. Explain various ALOHA protocols. [10]
6. a) What is meant by congestion control? How it is implemented in network layer. b) Discuss about various congestion control algorithms in detail. [5+5]

   OR

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7. Explain distance vector routing algorithm with example. [10]
8. Explain in detail about crash recovery. [10]

   OR

9. a) Explain IPV6 header format with the help of a neat diagram. b) Discuss about RARP. [5+5]

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10. a) Explain TCP connection management. b) Explain TCP congestion control. [5+5]

    OR

11. a) Explain DNS. b) What are the services provided by DNS and explain how it works. [5+5]

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