Annamalai University 2008 MCA Distributed Operating System Question Paper

Books For Preparation M.C.A. DEGREE EXAMINATION, 2008 ( SECOND SEMESTER ) ( PAPER - X )

231. DISTRIBUTED OPERATING SYSTEM

Maximum : 100 Marks

SECTION - A ( 8 × 5 = 40)

Answer any EIGHT questions.
All questions carry equal marks.

1. Explain the workstation-server model of distributed computing system.
2. What are the three ways of group communication ? - Explain.
3. How computer clocks are implemented ? - Discuss.
4. What is meant by deadlock ? What are the necessary conditions for deadlock ?
5. Describe the various methods of passive attack.
6. List out the design principles that can be used as a guide to designing secure systems.
7. Write down the characteristics of UNIX file system.
8. Write a short note on Inodes.
9. Write an algorithm for semaphore operations.
10. Describe the structure of debugging process.

SECTION - B (3 × 20 = 60)
Answer any THREE questions.
All questions carry equal marks.
11. What are the major issues in designing a distributed operating system ? - Discuss.
12. What do you mean by mutual exclusion ? Describe the three basic approach to implement the algorithm.
13. Write a short note on :
(a) Cryptography. (10)
(b) Digital signature. (10)
14. Describe any four system calls for the file system.
15. Explain briefly about the inter-process communication in UNIX system.

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