Download JNTUH MCA 3rd Sem R13 2017 August 813AR Computer Networks Question Paper

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Code No: 813AR R13

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

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MCA III Semester Examinations, August - 2017

COMPUTER NETWORKS

Time: 3 Hours Max. Marks: 60

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

Part A is compulsory which carries 20 marks. Answer all questions in Part A.

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Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 8 marks and may have a, b, c as sub questions.

PART - A

5 x 4 Marks = 20

1. a) What is the use of data link layer? [4]
2. b) Explain about pure ALOHA and slotted ALOHA. [4]

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3. c) What is store and forward packet switching? Explain. [4]
4. d) Draw the diagram of IPv4 header. [4]
5. e) Write short notes on UDP and its header. [4]

PART - B

5 x 8 Marks = 40

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2. Explain in detail about OSI Reference model with a neat diagram. [8]

   OR

3. a) Explain about sliding window protocol. b) Write short notes on evolution of internet. [4+4]
4. Discuss about collision free protocols. [8]

   OR

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5. Explain about a) Classic Ethernet physical layer. b) Classic Ethernet MAC sub layer protocol. [4+4]
6. a) What is a virtual circuit network? Explain. b) Discuss about count to infinity problem. [4+4]

   OR

7. Explain about a) Distributed Bellman-Ford routing algorithm. b) Admission control. [4+4]
8. Explain about a) Tunneling b) Internetwork routing. [4+4]

   OR

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9. Discuss about various IP Addresses. [8]
10. Explain about TCP sliding window protocol. [8]

    OR

11. Explain about a) E-mail b) DNS. [4+4]

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