National Institute of Technology 2009 Post Graduate Diploma Computer Application Computer networks - Question Paper

NATIONAL INSTITUTE OF ENGINEERING

COMPUTER NETWORKS

All the ques. are compulsory. The 1st 5 ques. shall be of 16 marks every and the last ques. shall be of 20 marks.

Q1. An option to LAN is simply a big timesharing System with terminals for all users. provide 2 Advantages of a client-server system using a LAN.

Q2. Data link protocols almost always put the CRC in a trailer rather than in a header. Why?

Q3. Many business computers have 3 distinct and world wide unique identifiers. elaborate they?

Q4. Can a machine with a single DNS name have multiple IP addresses? If so provide a possible example. If not then discuss why not?

Q5. Suppose an organization uses Kerberos for Authentication. In terms of security and service Availability, what is the effect if AS or TGS goes down?

Q6. provide 2 reasons why PGP compresses messages.

Earning:   Approval pending.