JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III Year COMPUTER NETWORKS Previous Question Paper (December - 2018 - R15)

B.Tech | III Year | II Semester | R15 | December - 2018

Answer PaperPaper Code: 126YHMaximum Marks: 75Time: 3 hours

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.

PART - A

125 marks

What are the key components of optical transmission system?

2 marks

Answer

The key components of an optical transmission system are the Optical Transmitter (converts electrical signals to optical signals), the Optical Fiber Cable (the transmission medium), and the Optical Receiver (converts optical signals back into electrical signals).

Discuss about the relationship between packets and frames.

3 marks

Answer

Packets and frames are units of data at different layers of the OSI model. A packet is a Protocol Data Unit (PDU) at the Network Layer, containing logical addressing. A frame is a PDU at the Data Link Layer, which encapsulates the packet by adding a header and trailer (including physical addresses and error checking) for transmission over a specific physical link.

Compare pure ALOHA and slotted ALOHA.

2 marks

Answer

Dedifferentiate about bridge and a switch.

3 marks

Answer

What is Flooding?

2 marks

Answer

Explain the concept of store and forward packet switching.

3 marks

Answer

Write briefly about the tunneling technique.

2 marks

Answer

What is classful addressing?

3 marks

Answer

What is the use of client server model?

2 marks

Answer

What is upward multiplexing and downward multiplexing?

3 marks

Answer

PART - B

210 marks

Compare OSI model with TCP/IP model.

5 marks

Answer

Explain Go Back N protocol.

5 marks

Answer

310 marks

Explain about electromagnetic spectrum.

5 marks

Answer

Calculate the CRC code by dividing

x⁷+x⁵+1

by the generator polynomial

x³+1

5 marks

Answer

410 marks

Discuss about the spanning tree bridge.

5 marks

Answer

Describe the fields of Ethernet frame format.

5 marks

Answer

510 marks

Explain about the Token ring algorithm.

5 marks

Answer

Write short notes on i) Repeaters ii) Hubs.

5 marks

Answer

610 marks

Explain link state routing algorithm.

5 marks

Answer

What are the metrics used to monitor the congestion?

5 marks

Answer

710 marks

What do you mean by optimality principle?

5 marks

Answer

Discuss about count to infinity problem.

5 marks

Answer

810 marks

What are the advantages of Transparent and nontransparent fragmentation?

5 marks

Answer

Explain the process of connection release in transport layer.

5 marks

Answer

910 marks

Explain IPv4 header format.

5 marks

Answer

Discuss about crash recovery in transport layer.

5 marks

Answer

1010 marks

Explain about the file transfer protocol.

5 marks

Answer

Explain about the TCP header.

5 marks

Answer

1110 marks

How the congestion is handled by TCP?

5 marks

Answer

Explain different message formats of e-Mail.

5 marks

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III Year COMPUTER NETWORKS Previous Question Paper (December - 2018 - R15)

PART - A

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PART - B

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