Jawaharlal Nehru Technological University Hyderabad 2006-5th Sem M.C.A Computer Aplications Iester s,- - Question Paper

Code No:NR-43/CA
M.C.A IV Semester Examinations, July - 2006.
COMPUTER COMMUNICATIONS
Time : three hours Max.Marks:60
ans any 5 ques.
All ques. carry equal marks

1. a) define Go back N sliding window protocol.
b) elaborate the different design problems of Data link layer?
c) discuss with example fault correction method using Parity bits?

2. a) discuss distance Vector Routing and discuss how routing Table info will be computed.
b) define ‘choke pkt’ and ‘hop-by hop choke pkt’ algorithm

3. define Ipv4 - format specification. Clearly discuss every and every Field of IPV4 with its significance.

4. discuss how Transport Layer “establishes” and “Releases” a connection. define them with the good
sketches.

5. a) discuss Transposition cipher with an example.
b) define RSA algorithm.

6. a) discuss DNS - Strategy of Application layer.
b) define different advantages of World Wide Web and also discuss how to prevent the misuse of
internet.

7. a) What is adaptive retransmission?
b) define Major properties of ATM.
c) provide the token bus frame Format and discuss every and every field.

8. Write short notes on any 3 of the following:
a) SNMP
b) Firewalls
c) Broadband ISDN
d) Virtual circuits?





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Earning:   Approval pending.