Jawaharlal Nehru Technological University Hyderabad 2010-3rd Sem M.C.A -ester Supplementary s COMPUTER COMMUNICATIONS - Question Paper

Code No: 32
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
MCA-III Semester Supplementary exams July 2010
COMPUTER COMMUNICATIONS
Time: 3hours Max.Marks:60
ans any 5 ques.
All ques. carry equal Marks
- - -
1.a) discuss the OSI reference model in detail.
b) discuss about ARPANET.
2.a) discuss the design problems of the Data link layer in detail.
b) discuss about twisted pair transmission Media.
3.a) What is the difference ranging from virtual circuit subnet and datagram subnet?
b) discuss about CSMA protocols.
4.a) discuss the different classes of IP addresses.
b) discuss the shortest path Routing Algorithm.
5.a) discuss the TCP transmission policy.
b) Compare TCP protocol with UDP.
6.a) discuss the HTTP protocol.
b) discuss the SIP protocol.
7.a) Compare symmetric key Algorithms with public key Algorithms.
b) discuss the RSA Algorithm.
8.a) discuss about Mobile code security.
b) discuss the PGP.

Earning:   Approval pending.