M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
First Semester
Computer Science
ADVANCED OPERATING SYSTEMS
(CBCS 2016 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. What is thread?
2. When a state is said to be an expedient state?
3. List out the advantages of distributed system over
traditional time-sharing system.
4. Classify the non-token-based mutual exclusion
algorithms.
5. What are the two important goals of distributed file
system?
6. What is the basic function of load distributing algorithm?
7. What is forward-error recovery?
8. Why systems are designed to be fault-tolerant?
9. What are the basic classes of mutltiprocessor operating
system?
10. Give any two features of Ubuntu.
Sub. Code
551105
RW-981
2
Wk 14
Part B x 5 25)
Answer all questions choosing either or
11. Classify the advanced operating systems and
explain.
Or
Describe the systems with only consumable
resources.
12. How vector clocks are implemented?
Or
Describe the Lamport's algorithm.
13. Describe the design issues of DSM.
Or
Describe the different types of information policy.
14. Briefly explain static voting scheme.
Or
What are the causes of system failure? Explain
them briefly.
15. What are the issues in processor scheduling?
Or
Describe the fault detection mechanisms in memory
management.
RW-981
3
Wk 14
Part C x 10 30)
Answer any three questions.
16. What are the models of deadlocks? Explain them.
17. Describe the issues in distributed operating systems.
18. Describe any two algorithms for implementing DSM.
19. Explain the approaches available for backward-error
recovery.
20. Write the advantages, disadvantages and performance of
threads at user and kernel level.
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