Download JNTUH MCA 1st Year R20 2022 May 871AD Operating Systems Question Paper

Download JNTUH (Jawaharlal nehru technological university) MCA (Master of Computer Applications) 1st Year (First Year) R20 2022 May 871AD Operating Systems Previous Question Paper

R20

Code No: 871AD















JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA I Semester Examinations, May - 2022

OPERATING SYSTEMS

Time: 3 Hours















Max.Marks:75

Answer any five questions

All questions carry equal marks

- - -





1.a)

Write in detail on parallel and distributed operating systems.

b)

Explain objectives and functions of OS.











[8+7]


2.a)

Explain about Multiprogrammed and Time-shared operating system.

b)

Explain about various system components.









[8+7]


3.a)

What is CPU scheduling? Compare pre-emptive and non-preemptive scheduling methods.

b)

Explain two pre-emptive scheduling algorithms with suitable examples each.

[8+7]


4.

Explain about fork, exit, wait, waitpid and exec system calls.





[15]


5.

What do you mean by Monitors? How it is used solve the Dining-Philosophers Solution
Using Monitors?

















[15]


6.a)

What is dead lock? Explain about the dead lock detection.

b)

Explain the procedure for recovering from the deadlock.







[8+7]


7.

Consider the following page reference string 1,2,3,4,2,1,5,6,2,1,2,3,7,6,3,2,1,2,3,6 how
many page faults would occur for the following replacement algorithm assuming three,
and four frames ?
a) FIFO replacement



b) Optimal replacement.





[8+7]


8.a)

Explain various approaches for free space management.

b)

Write briefly on open, create, read, and write, close file operations system calls. [5+10]






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