Time: 2.30 Hrs. M.M.: 50
Note: All questions are compulsory.
1. Define modulation. Explain different types of modulation. 8
Explain transmission media and different modes of transmission.
2. Explain O.S.I. model and its different layers. 8
3. What is channel allocation. Explain Aloha, Slotted Aloha and CSMA/CD. 8
4. Define congestion control. Explain different type of congestion control techniques. 8
5. Write short notes on any three: 6*3=18
(a) Cryptography (b) F.T.P.
(c) Electronic mail (d) IP addressing