MODEL PAPER

B. Tech (CSE) Degree Examination

Forth Year - Second Semester

DISTRIBUTED SYSTEMS

Effective from the admitted batch of 2004-2005

Time: 3 hrs
Max Marks: 70

First Question is Compulsory

Answer any four from the remaining questions

All Questions carry equal marks

Answer all parts of any question at one place

1. Briefly explain the following (7 x 2 = 14)
a. Tightly coupled software on loosely coupled hardware.
b. TCP/IP
c. Logical clocks
d. Threads
e. File sharing semantics
f. NFS
g. Location Transparency.

2. Discuss the characteristics of Network. Distributed and Multiprocessor time sharing operating systems. (14)

3. a. Explain the difference between stateless and state full server (4)
b. Discuss RPC semantics in the presence of failures. (10)

4. Discuss implementation aspects of Atomic transaction model. (14)

5. a. Briefly discuss group communication issues. (10)
b. Explain how token ring algorithm can be used to implement mutual exclusion. (4)

6. Discuss the design issues for processor allocation algorithms. (14)

7. Discuss the design issues for file caching and replication (14)

8. Discuss the architectural aspects for implementing shared memory (14)