C-09-CM-402
3452
BOARD DIPLOMA
EXAMINATION, (C-09)
OCTOER/NOVEMBER 2011
D.C.M.E - IV SEMISTER
EXAMINATION
OPERATING SYSTEMS
TIME: 3
Hours]
[Total Marks :80]
PART - A
10*3=30
Instruction: (1)
answer all question and each question
carries THREE marks
(2) answer should be brief and
straight to the point and shall not exceed
five simple sentences
1. What is spooling?
2. What is you mean of distributed systems?
3. Write the differences between threads and
processes.
4. What does ‘preemptive” mean in the context of
scheduling? Give an example.
5. What is semaphore?
6. Give examples of non-sharable resoures.
7. When external fragmentation happens?
8. What is the cause of thrashing? Briefly
explain
9. What is the problem with FCFS scheduling with
disks?
10. List steps you need to follow to delete a
subdirectory in your account.
PART- B
5*10=50
Instructions: (1) Answer any five questions
and each question carries ten marks. (2) The answers should be comprehensive
and the criteria for valuation is the content but not the length of the answer.
11. Describe various types
of operating systems.
12. Explain the queuing
diagram, with respect to scheduling queues.
13. What is a process?
Write about sequential and concurrent processes.
14. Explain the deadlock
detection.
15. Explain the optimal
page replacement algorithm, with an example.
16. Describe the
page-to-frame translation, with appropriate example.
17. Compare the methods of
the free disk space management
18. Explain the
differences among the file acess methods.
POLYTECHNIC DIPLOMA PREVIOUS QUESTION PAPERS WITH ANSWERS FOR CPP
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