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Code No: 823AE Rl 5
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
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MCA 111 Semester Examinations, June/July - 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
l.a) Compare OSI Reference Model with TCP/IP Reference Model. [5]
b) Describe P-persistent CSMA Protocol. [5]
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c) Explain Optimality principle. [5]
d) List the major goals of IPv6. [5]
e) What resource records are associated with DNS? Explain. [5]
PART -B
5 x 10 Marks =50
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2. What is the need of Framing? Explain Character-Stuffing and bit stuffing methods for framing. [10]
OR
3. Illustrate OSI reference model and functionality of each layer in detail. [10]
4.a) Explain the basic idea of ALOHA system? Describe the efficiency of ALOHA channel.
b) Discuss in detail about the Learning Bridges. [5+5]
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OR
5.a) Discuss in detail about CSMA with Collision Detection Protocol.
b) Describe the use of repeaters and gateways in network, transport and application layers.
[5+5]
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6.a) Explain the implementation of connection less service in network layer.
b) Describe in detail about the Hierarchical routing. [5+5]
OR
7.a) Describe shortest path routing algorithm with suitable example.
b) Explain Traffic-Aware Routing for Congestion Control. [5+5]
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8.a) Explain in detail about The Dynamic Host Configuration Protocol.
b) Describe the Services provided by Transport Layer to the Upper Layers. [5+5]
OR
9. Draw IPv6 Header format and explain each field in the IPv6 header. [10]
10.a) Explain briefly about the Remote Procedure call.
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b) Describe in detail about the Name Servers in DNS. [5+5]
OR
11.a) Draw and explain various fields in UDP Header.
b) Explain in detail about the File Transfer Protocol. [5+5]
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