Download JNTUH MCA 3rd Sem R15 2019 April-May 823AE Computer Networks Question Paper

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Code No: 823AE

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

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Note: This question paper 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) Discuss flow control technique in data link layer. [5]
2. b) Write the assumptions for dynamic channel allocation. [5]
3. c) Write the services of network layer provided to transport layer. [5]
4. d) Explain the primitives of transport layer. [5]

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5. e) Write the features of TCP. [5]

PART -B 5 x 10 Marks =50

2. Explain OSI reference model of computer network with suitable diagram and discuss about role of each layer of OSI reference model. [10]
   OR
3. a) Discuss about sliding window protocol for noisy channel.
   

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   b) Write about Go-back-N protocol. [5+5]
4. a) Explain learning bridges with a neat sketch.
   b) Elaborate bit map protocol. [5+5]
   OR
5. Explain persistent and non persistent CSMA protocols. [10]

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6. a) What is virtual circuit? Explain it briefly.
   b) Give a detailed note on flooding. [5+5]
   OR
7. Explain the following routing techniques.
   a) Broadcasting routing
   

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   b) Distance vector routing. [5+5]
8. Explain in detail about ARP protocol. [10]
   OR
9. Explain steps for connection establishment and releasing in transport layer. [10]
10. a) Explain UDP message queuing technique.
    

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    b) Describe HTTP message formats. [5+5]
    OR
11. Write notes on
    a) POP
    b) TCP sliding window. [5+5]

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