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

Download JNTUH (Jawaharlal nehru technological university) MCA (Master of Computer Applications) 3rd Sem (Third Semester) Regulation-R17 2021 February 843AC Operating Systems Previous Question Paper

Code No: 843AC















R17

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA III Semester Examinations, February - 2021

OPERATING SYSTEMS

Time: 2 hours













Max.Marks:75

Answer any five questions



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]


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:



a) Scheduling Criteria.



b) Cooperating Processes.













[7+8]


5.

Explain about message queues and shared memory.







[15]


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]


8.

Write short notes on: a) unix file structure b) system calls in unix.



[7+8]






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