Mahatma Gandhi University (MGU) 2009 B.Tech Computer Science and Engineering Data communication - Question Paper

3hrs 100marks
ans ALL THE ques.
PART A[10*4 marks]
1. describe and discuss Analog modulation.
2. discuss the generation of PLM with neat diagrams.
3. discuss the need for multiplexing.
4. describe and discuss channel capacity.
5. Differentiate simplex form Half Duplex.
6.Define and discuss noise and its kinds.
7.Waht is Hamming code?Explain its properties.
8.Give an account on Barcodes.
9.What are multidrop lines?Explain.
10.Explain the advantages and applications of twisted pair cable.
Part B [5*12 marks]
11 (a)State and discuss sampling theorem.
(b)Differentiate PWM from PPM. OR
12 .Describe in detail the generation of different modulated waves with neat diagrams.
13.Explain the principle of FDM with a neat diagram. OR
14.Explain the concept of statistical TDM with a neat diagram.
15.Explain in detail the principle of synchronous ,asynchronous and Isosynchronous transmission schemes OR
16.Explain the subsequent in detail:-
(a)Full Duplex
(b)Message switching
(c)Circuit switching. [4+4+4=12 marks]
17.Explain the applications of block codes and convolutional codes.Differentiate them. OR
18.Write tech. notes on
(a)ARQ techniques (b)Baudot(c)ASCII codes (d)EBCDIC codes [12 marks]
19.Explain the advantages and applications of coaxial cable and fiber optic cable. OR
20.Write tech. motes on:
(a)GSM system architecture.(6marks)
(b)Components of computer communication. (6marks)

Earning:   Approval pending.