Data Communication and Networks Old Paper [2016] in Diploma

Course: I.T
Code: 4034

Year/Sem.: Second Year/IV Semester

Time: 2.30 Hrs. M.M.: 50

Note: All questions are compulsory.

1. Define modulation. Explain different types of modulation. 8
or
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