Jawaharlal Nehru Technological University Kakinada 2010-1st Sem M.Tech Computer Science & Engg. - Information Security SUBJECT CODE: C4003 REGULAR S DISTRIBUTED OPERATING SYSTEMS (CSE –

1. (a) What meant by multithreading? elaborate the benefits of threads in distributed
Systems?
(b) Illustrate briefly about X.window system.

2. (a) define linking and mounting with an example.
(b) discuss how remote name spaces are mounted?

3. (a) elaborate the kinds of transactions?
(b) Write briefly about Lamport's algorithm which synchronizes logical locks.

4. define briefly about
(a) Release consistency.
(b) Weak consistency.

5. (a) How is redundancy used to mask faults?
(b) How are lost reply messages identified?
(c) How does a client obtain out about server clash?

6. provide the overview of CORBA. List the services offered by CORBA.

7. (a) define about file locking in NFS.
(b) define transactional behavior in sharing files in Coda file system.

8. (a) discuss briefly about caching and replication.
(b) What is a Domino server? How is request handled in a cluster of Domino servers?

Earning:   Approval pending.