Download JNTUH MCA 3rd Sem R15 2018 June-July 823AE Computer Networks Question Paper

Download JNTUH (Jawaharlal nehru technological university) MCA (Master of Computer Applications) 3rd Sem (Third Semester) Regulation-R15 2018 June-July 823AE Computer Networks Previous Question Paper

R15

Code No: 823AE















JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA III Semester Examinations, June/July - 2018

COMPUTER NETWORKS

Time: 3hrs













Max.Marks:75


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



















5 ? 5 Marks = 25

1.a)

Compare OSI Reference Model with TCP/IP Reference Model.





[5]

b) Describe P-persistent CSMA Protocol.











[5]

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 ? 10 Marks = 50

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]

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]

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]



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.
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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