Download JNTUH MCA 3rd Sem R17 2021 February 843AC Operating Systems Question Paper

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Code No: 843AC R17

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JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA III Semester Examinations, February - 2021

OPERATING SYSTEMS

Time: 2 hours Max.Marks:75

Answer any five questions

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All questions carry equal marks

1. What are the different services offered by the operating system? Explain in detail. [15]

2. a) Briefly explain typical functions of an Operating-System Kernel.
   b) What are the different types of operating systems? Explain them in detail. [7+8]

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3. a) What is unsafe state ? Differentiate between unsafe state and deadlock state.
   b) Explain recovery procedures from deadlocks. [7+8]

4. Explain the following:

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   a) Scheduling Criteria.
   b) Cooperating Processes. [7+8]

5. Explain about message queues and shared memory. [15]

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6. a) Explain about demand paging.
   b) Differentiate between paging and segmentation. [7+8]

7. a) Describe file system mounting.
   b) Explain the concept and techniques of free space management. [7+8]

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8. Write short notes on:

   a) unix file structure b) system calls in unix. [7+8]

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