B.Sc. DEGREE EXAMINATION, NOVEMBER 2017
Fifth Semester
Computer Science
OPERATING SYSTEMS
(CBCS 2011 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. Define Operating systems.
2. What do you mean by segmentation?
3. List out the different states of processes.
4. Mention the four necessary conditions for deadlock.
5. Bring out the advantages of concurrent programming.
6. How communications can be done among devices?
7. List down the various responsibilities of file manager.
8. Define data compression?
9. What is kernel in Unix?
10. How the files can be organized in UNIX?
Sub. Code
1BCE5C1
AFC-10386
2
WK16
Part B x 5 25)
Answer all questions, choosing either or
11. Write a short note on demand paged memory
management.
Or
Describe the advantages of dynamic partitions in
memory.
12. Give a note on cache memory.
Or
Define deadlock. How deadlocks can be modeled in a
system?
13. Brief a note on process synchronization
mechanisms.
Or
Explicate direct access storage devices.
14. How can the file be organized? Discuss it.
Or
Briefly explicate on access control verification
module.
15. Illustrate the history of Unix OS.
Or
How can devices be managed in Unix? Describe it.
AFC-10386
3
WK16
Part C x 10 30)
Answer any three questions.
16. Explain about the paged memory allocation in detail.
17. Discuss the various strategies for handling deadlocks.
18. Explicate on components of I/O subsystem.
19. Compare the advantages and disadvantages of Network
OS and Distributed OS.
20. Illustrate in detail the processor management technique
in Unix.
————————