Andhra University 2008-1st Sem B.E Information Technology 4/4 IT- Question Paper

[12-4111]

IV/IV B.Tech.DEGREE exam.

1st Semester

info Technology

ADVANCED OPERATING SYSTEM

(Effective from the admitted batch of 2004-2005)

Time : 3 hours Maximum : 70 marks

1st ques. is compulsory.

ans any 4 from the remaining ques..

All ques. carry equal marks.

ans all Part of any ques. at 1 place.

1. (a) elaborate the advantages of distributed systems over centralized systems?
(b) What is the functionality of network layer of OSI model?
(c) Write about the syntax of interface definition language?
(d) What is a logical clock?
(e) Name a few cache coherence protocols?
(f) discuss about any 1 election algorithm?
(g) define any 1 processor allocation algorithm?

2. (a) elaborate the design problems of distributed systems? discuss about them.
(b) define the client server model of calculation.

3. (a) Writ about Berkeley clock synchronization algorithm.
(b) define a distributed mutual exclusion algorithm.

4. (a) Write the steps for developing an RPC client server program under UNIX.
(b) Write about the features of asynchronous RPC.

5. (a) How the deadlocks are various in distributed system compared to centralized systems? discuss.
(b) define the design problems of threads package.

6. (a) Write about the properties of sequential memory consistency model.
(b) define the working of a page based distributed shared memory system.

7. (a) elaborate the functions given by the directory service component of a distributed file system?
(b) define the architecture of CODA distributed file system.

8. (a) define any dynamic scheduling algorithm.
(b) define graph theoretic processor allocation algorithm.


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[B 2499/I/08)

Earning:   Approval pending.