Download JNTUH MCA 3rd Sem R17 2021 July-August 843AC Operating Systems Question Paper

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Code No: 843AC
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

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R17
MCA III Semester Examinations, July/August - 2021
OPERATING SYSTEMS
Time: 3 Hours Max.Marks:75
Answer any five questions

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All questions carry equal marks
1. a) What are the challenges in designing a distributed operating system?
b) Explain the various functions of an operating system. [8+7]
2. a) What is system call? Explain the various types of system calls and its purpose.
b) What are time shared and real time systems? Explain them in detail. [8+7]

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3. a) Explain exec system call with examples.
b) What is Deadlock? Explain about Deadlock Avoidance. [8+7]
4. a) Explain the concept of Binary semaphores in detail.
b) What is a race condition? Describe how monitors are to solve synchronization problem. [7+8]
6. a) Explain about Inter Process Communication using FIFOs in detail with examples. [15]

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7. a) Explain various LRU-Approximation page replacement algorithms.
b) Draw a neat diagram showing address translation scheme in paging with TLB. [8+7]
8. a) With a neat diagram explain about Unix File system.
b) Explain briefly about file protection. [8+7]
9. Discuss various file allocation strategies. Discuss the merits and demerits of various file allocation strategies. [15]

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