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

Download JNTUH (Jawaharlal nehru technological university) MCA (Master of Computer Applications) 2nd Sem (Second Semester) Regulation-R132019 December 812AG Operating Systems Previous Question Paper

R13

Code No: 812AG

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA II Semester Examinations, December - 2019

OPERATING SYSTEMS



Time: 3 Hours













Max. Marks: 60

S 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.



PART - A



















5 ? 4 Marks = 20



1.a) What are the objectives of operating system?









[4]

b) What is process control block?













[4]

c) What is demand paging?















[4]

d) What is file system mounting?













[4]

e) What is access matrix?















[4]

PART - B

















5 ? 8 Marks = 40



2.

Distinguish between multi-programmed and time shared systems.



[8]

OR

3.

What are special purpose systems? Elaborate on them.







[8]


4.

How process synchronization is achieved in linux.







[8]

OR

5.

Explain multiprocessor and real time scheduling.







[8]


6.

Explain page replacement algorithms with examples.







[8]

OR

7.

Explain segmentation with paging memory management technique.



[8]


8.

Explain various file allocation methods.











[8]

OR

9.

Explain disk scheduling algorithms.











[8]


10.

What are deadlock recovery strategies?











[8]

OR

11.

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





[8]






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