Pondicherry University 2009 B.C.A Computer Application , OPERATING SYSTEM - Question Paper

(Pondicherry University)
B.C.A DEGREE EXAMINATION,APRIL/MAY 2009.

FOUTH SEMESTER

COMPUTER APPLICATIONS

OPERATING SYSTEM

PART-A (10*2=20 MARKS)

ans ALL THE ques..

1. What is a time sharing systems?
2. What is a system call?
3. describe belady’s Anomoly.
4. What is thrashing?
5. describe PCB.
6. describe critical part.
7. describe interrupt.
8. What is a virtual device?
9. What operations can be done on Files?
10. describe FAT.

PART-B (5*6=30 MARKS)

ans ANY 5 ques..

11. Write short notes on:
(a) Batch System (2 marks)
(b) Multiprogramming Systems (2 marks)
(c) Time sharing System (2 marks)

12. Enumerate the functions of OS.

13. discuss Segmentation.

14. discuss briefly Demand Paging.

15. provide the 2 process Solution for the Critical part issue.

16. Write short notes on Semaphores.

17. What is I/O channel? discuss the kinds of I/O channel.

18. discuss FAT.

PART-C (5*10=50 MARKS)

ANSWERS ALL THE ques.


19. discuss the operating system services.
Or
20. Write shorts notes on contiguous Allocation of Memory.


21. discuss the page Replacement Algorithms.
Or
22. explain the features of segmented paging and paged segmentation.

23. discuss any 2 classical issues of Synchronization.
Or
24. explain the CPU Scheduling Algorithms Briefly.


25. discuss how Communication is established ranging from CPU and I/O channel.
Or
26. define the virtual Devices in detail.


27. define the File system organization.
Or
28. explain the file allocation methods.

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Earning:   Approval pending.