Acharya Nagarjuna University (ANU) 2007 M.C.A V – DISTRIBUTED OPERATING SYSTEMS - Question Paper

M.C.A. 2nd YEAR DEGREE EXAMINATION, MAY 2007.
Paper V – DISTRIBUTED OPERATING SYSTEMS

Time: 3 hours Maximum: 75 Marks

part A - (3 x 15 =45 marks)
ans any 3 of the subsequent.

1. explain the design problems for a distributed operating system.
2. explain RPC semantics in the presence of failures.
3. explain distributed mutual exclusion and the corresponding algorithms.
4. explain the design and implementation problems for threads packages.
5. explain file caching and replication problems for a distributed file system.

part B - ( five x five = 25 marks)
ans any 5 of the subsequent.

6. discuss the advantages of a distributed system over centralized system.
7. discuss the functionality of every of seven layered OSI reference model.
8. Briefly discuss atomicity and message ordering in group communication.
9. discuss Lamport’s logical clocks. 10. discuss the atomic transaction
model.
11. discuss the workstation model for processor allocation in distributed system.
12. discuss the difference ranging from user level and kernel level threads.
13. discuss file sharing semantics.

part C - ( five x one = five marks)
ans ALL of the subsequent.

14. discuss the subsequent terms.
a) Network operating system b) Blocking primitives.
c) Clock skew d) Component faults.
e) Directory.

Earning:   Approval pending.