Tamil Nadu Open University (TNOU) 2006 M.C.A OPERATING SYSTEM - Question Paper

Time : three hours
Maximum marks : 75

PART A (5x5=25 marks)

ans any 5 ques..

1. What is real time system? discuss its features.

2. Draw the process sate transitions.

3. discuss the significance of semaphores.

4. define the 4 conditions causing dead locks.

5 define swapping in detail.

6 discuss distributed file systems in detail.

7. explain any live UNIX commands.
PART B (5x10=50 marks)

ans any 5 ques..

8. discuss the different services given by an operating system.

9. discuss the subsequent CPU scheduling algorithms

(a) 1st come 1st serve

(b) Shortest remaining time next.

10. explain the significance of paging and segmentation.

11. What is meant by virtual memory? How can it be implemented?

12. explain security problems and Encryption.

13. discuss the different models ofdistributed system.

14. What is meant by parallel programming? provide an example.

Earning:   Approval pending.