M.Sc I Semester Examination, 2009, Operating System

Faculty of Science
M.Sc I Semester Examination, April/May 2009
Computer Science Paper 1.2
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Modern Operating System

Answer all the questions.

Section - A (Marks : 8 X 4 = 32)
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1. What is PCB? Discuss briefly?
2. What is priority scheduling? Explain with an example.
3. What is thrashing? What is its use?
4. What is SCAN scheduling? Explain with an example.
5. Explain how domain is protected.
6. What is authentication in security?
7. Explain security features in management.
8. What is recovery? Explain.


Section - B (Marks : 4 X 12 = 48).
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9. (a) Explain the distributed system architecture and different issues involved in it.

(OR)

(b) What is dead lock? Explain Banker's algorithm with an example.

10 (a) What is paging? Explain hardware structure of paging.

(OR)

(b) Explain (i) Thread Scheduling (ii) Directory structure.

11. (a) Explain in detail how does windows handle process.

(OR)
(b) What is two pahse protocol? Explain in detail.

12. (a) (i) Explain about network management in Unix.
(ii) Write about backup devices.

(OR)

(b) What is network file system? Explain the file structure at both server and clients.