B.Sc. DEGREE EXAMINATION, NOVEMBER 2017
Fifth Semester
Software
OPERATING SYSTEM
(CBCS 2014 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. What is an operating system?
2. Where real-time operating system is used?
3. Define scheduling.
4. What is semaphore?
5. What are monitors?
6. Define deadlock.
7. What is virtual memory?
8. Define page fragmentation.
9. Write about single level directory.
10. Define seek time.
Sub. Code
4BSO5C1
AFF-4577
2
Ws8
Part B x 5 25)
Answer all questions, choosing either or
11. Discuss about the types of operating systems.
Or
What are the information stored in a process control
block? Explain.
12. Write short notes on the long-term scheduler.
Or
Discuss about the readers and writers problem in
concurrent programming.
13. Write short notes on Deadlock prevention.
Or
Compare static relocation and dynamic relocation.
14. What is paging? Explain its principles of operation.
Or
Write short notes on working set.
15. Explain command language file services.
Or
Discuss about processor management in Unix
Operating System.
AFF-4577
3
Ws8
Part C x 10 30)
Answer any three questions.
16. Explain the process state transitions.
17. Discuss about the scheduling algorithms.
18. Discuss about the issues in message implementation.
19. Explain about any two page replacement algorithms.
20. What is Disk Space Management? Explain.