Download JNTUH MCA 3rd Sem R13 2017 August 813AR Computer Networks Question Paper

Download JNTUH (Jawaharlal nehru technological university) MCA (Master of Computer Applications) 3rd Sem (Third Semester) Regulation-R13 2017 August 813AR Computer Networks Previous Question Paper

R13

Code No: 813AR

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA III Semester Examinations, August - 2017

COMPUTER NETWORKS



Time: 3 Hours













Max. Marks: 60


Note: This question paper contains two parts A and B.

Part A is compulsory which carries 20 marks. Answer all questions in Part A.
Part B consists of 5 Units. Answer any one full question from each unit. Each
question carries 8 marks and may have a, b, c as sub questions.



PART - A



















5 ? 4 Marks = 20

1.a) What is the use of data link layer?











[4]

b) Explain about pure ALOHA and slotted ALOHA.





[4]

c)

What is store and forward packet switching? Explain.





[4]

d)

Draw the diagram of IPv4 header.











[4]

e) Write short notes on UDP and its header.









[4]



PART - B

















5 ? 8 Marks = 40

2.

Explain in detail about OSI Reference model with a neat diagram.

[8]

OR

3.a)

Explain about sliding window protocol.

b)

Write short notes on evolution of internet.







[4+4]



4.

Discuss about collision free protocols.









[8]

OR

5.

Explain about
a) Classic Ethernet physical layer.



b) Classic Ethernet MAC sub layer protocol.







[4+4]


6.a)

What is a virtual circuit network? Explain.

b)

Discuss about count to infinity problem.









[4+4]

OR

7.

Explain about
a) Distributed Bellman-Ford routing algorithm.



b) Admission control.













[4+4]



8.

Explain about
a) Tunneling



b) Internetwork routing.













[4+4]

OR

9.

Discuss about various IP Addresses.









[8]



10.

Explain about TCP sliding window protocol.







[8]

OR

11.

Explain about
a) E-mail





b) DNS.









[4+4]









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