VTU Computer Networks 1 - December 2013 Exam Question Paper

VTU Computer Science (Semester 5)
Computer Networks 1
December 2013

Total marks: --
Total time: --

INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

1 (a) What is data communication ?List and explain the five components of data communication system

6 M

1 (b) Discuss the ISO-OSI layered model,Beginning ot the functonalities of each layer

10 M

1 (c) Differentiate Between:
ARP and
UDP and TCP

4 M

2 (a) Write a describe note on three causes transmission impairments

8 M

2 (b) Explain the transmission modes?

6 M

2 (c) Explain delta modulation ?

6 M

3 (a) What is FDM? Briefly explain its multiplexing and demultiplexing process.

6 M

3 (b) Four sorces create 250 character per second.The frame contain one character from each source and one extra bit for synchronization Find:The data rate of each source
Duration of each character in each source Frame rate
duartion of output frame
Frame size in bits
Data rate of link

6 M

3 (c) What is time divison multiplexing ?Expalin how statical TDM overcomes the disadvantages of synchronous TDM

8 M

4 (a) Describe different types of errors

3 M

4 (b) Explain error detection and error detection corrrection with respect to block coding

8 M

4 (c) Find the codeword ,Using CRC given data word "10001" and generator "10011'

9 M

5 (a) Explain briefly ,With neat figure stop and wait ARQ and Go Back N ARQ

12 M

5 (b) Explain the frame formate and translational pahases of point to point protocol

8 M

6 (a) Explain :
CSMA
CSMA /CD

12 M

6 (b) Describe 802.3 MAC farme

8 M

7 (a ) Explain IEEE 802.11 architecture

10 M

7 (b) Bring out the difference between repetors ,bridges router and gateway

10 M

8 (a) Explain with respect to IPV4 ,classful addresing and classless addresing

10 M

8 (b) Explain in detail IPV6 packet formate

10 M

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