Jawaharlal Nehru Technological University Hyderabad 2007-2nd Sem M.C.A Computer Aplications Iester s,- - exam paper

Code No:R6-32/MCA
M.C.A III-Semester Examinations, December-2007.
COMPUTER COMMUNICATIONS
Time : three hours Max.Marks:60
ans any 5 ques.
All ques. carry equal marks

1. a) define data link layer switching techniques.
b) define about Bluetooth.

2. a) provide the transmission frame, for the data frame 10011001110 using G(x) 1011.
b) define 1 bit sliding window protocol.

3. discuss with a neat sketch HDLC data link frame format. define the major goals of
HDLC.

4. a) define different internet- Networking Addressing Schemes.
b) discuss what is congesting? define an algorithm for congestion control.

5. Expain what is TCP with its layers? define with a neat sketch Transport layer problems of TCP.

6. a) What is Authentication? define an Authentication protocol.
b) define public-key algorithm.

7. Write short notes on the following:
a) Digital signatures
b) World Wide Web
c) Web Security

8. Write short notes on the following:
a) Multimedia
b) Goals of computer Network
c) Physical layer.


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Earning:   Approval pending.