Download JNTUH MCA 3rd Sem R17 2019 December 843AB Computer Networks Question Paper

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Code No: 843AB

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

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MCA I Semester Examinations, December - 2019

COMPUTER NETWORKS

Time: 3hrs Max.Marks:75

Note: This question contains two parts A and B.

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.

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PART - A 5 x 5 Marks = 25

1. a) Explain briefly about design issues for layers in computer network. 5
2. b) What is bridge? What are the uses of bridges in computer network? 5
3. a) What is flooding? Explain it briefly. 5
4. b) Write the services of transport layer. 5

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5. a) What is HTTP protocol? Describe its feature and header. 5

PART -B 5 x 10 Marks =50

1. a) Explain TCP-IP reference model for computer network and compare it with OSI reference model. [10]

   OR

2. b) Compare PAN, LAN and WAN.

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1. a) What are fiber optics media? Explain its advantages and compare with other guided media. [5+5]
2. b) Explain about Hamming code with an example.

   Give a note on wireless LANs: [5+5]

   OR

1. a) What is simplex stop and wait protocol? Explain it for error free and noisy channel.[10]

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2. b) Explain design issues of network layer.

   Write about packet fragmentation. [5+5]

   OR

1. a) Elaborate congestion avoiding techniques in network layer. [10]
2. b) Write the feature TCP protocol.

   Explain Connection establishment technique in TCP. [5+5]

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   OR

1. a) Explain Performance issues of TCP.

   Describe Real Time Transport protocol. [5+5]

   OR

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2. b) Describe Session Initiation protocol.

   Explain the features of JPEG video compression format. [5+5]

   OR

1. Write notes on

   a) Cookies b) Role of DNS in computer network. [5+5]

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