DISTANCE EDUCATION
M.Sc. (Information Technology) DEGREE EXAMINATION,
MAY 2017.
OPERATING SYSTEMS
(2002 onwards)
Time Three hours Maximum 100 marks
SECTION A — (10 3 30 marks)
Answer ALL questions.
1. What is the use of an operating system?
2. What are the resources managed by an operating system?
3. Define a process.
4. What is the use of monitor?
5. Define deadlock.
6. What is a device driver?
7. What is swapping?
8. What is external fragmentation?
9. Define page fault.
10. What are the goals of protection?
Sub. Code
12
DE-477
WS
2
SECTION B — 10 40 marks)
Answer any FOUR questions.
11. Explain the features of multiprogrammed batch systems
and time sharing systems.
12. Explain the use and implementation of semaphores.
13. Explain Interprocess communication.
14. Explain the conditions for deadlock to occur.
15. Explain fixed-partitioned memory management scheme.
16. Explain any three types of directory structure.
SECTION C — 15 30 marks)
Answer any TWO questions.
17. Explain how operating system services are provided by
system calls.
18. Explain the various CPU scheduling algorithms.
19. Elaborate on segmented memory management scheme.