B.Sc. DEGREE EXAMINATION, APRIL 2018
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. What is an Operating System?
2. What do you mean by Virtual memory?
3. What is the need for job scheduling?
4. What is Starvation?
5. What are the advantages of Concurrent Programming?
6. What is a dedicated device?
7. Define File.
8. What is a Distributed OS?
9. What are the design goals of UNIX Operating System?
10. What is NOS?
Sub. Code
1BCE5C1
AFC-10682
2
Wk 14
Part B x 5 25)
Answer all questions choosing either or
11. Explain Fixed partition method with diagram.
Or
Write short notes on Demand Paging.
12. Explain the strategies for handling Deadlock.
Or
Explain any two cases of Deadlock.
13. Explain the Direct Access storage devices.
Or
Explain the components of I/O subsystem.
14. Explain the various File Access methods.
Or
Write short notes on File Organization.
15. Explain the UNIX device management system.
Or
Write short notes on User Interface.
Part C x 10 30)
Answer any three questions.
16. Explain various types of Operating System.
17. Explain
SJF
Round Robin Scheduling algorithms with example.
AFC-10682
3
Wk 14
18. Describe the process synchronization software.
19. Explain
DOS development
NOS development.
20. Explain the UNIX File Management system.
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