Download JNTUH MCA 2nd Sem R13 2019 December 812AG Operating Systems Question Paper

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Code No: 812AG R13

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

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MCA I Semester Examinations, December - 2019

OPERATING SYSTEMS

Time: 3 Hours Max. Marks: 60

Note: This question paper contains two parts A and B.

Part A is compulsory which carries 20 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 8 marks and may have a, b, c as sub questions.

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PART - A 5 x 4 Marks =20

1. a) What are the objectives of operating system?
2. b) What is process control block?
3. c) What is demand paging?
4. d) What is file system mounting?

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5. e) What is access matrix?

PART -B 5 x 8 Marks =40

1. 2. Distinguish between multi-programmed and time shared systems. [8]

   OR

   3. What are special purpose systems? Elaborate on them. [8]

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2. 4. How process synchronization is achieved in linux. [8]

   OR

   5. Explain multiprocessor and real time scheduling. [8]

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3. 6. Explain page replacement algorithms with examples. [8]

   OR

   7. Explain segmentation with paging memory management technique. [8]

4. 8. Explain various file allocation methods. [8]

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   OR

   9. Explain disk scheduling algorithms. [8]

5. 10. What are deadlock recovery strategies? [8]

   OR

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   11. What is a deadlock? What are resource allocation graphs? How resource allocation graphs are useful in identifying and avoiding a deadlock. [8]