Previous Year Questions

Q56 MCQ CUET-PG COMPUTER SCIENCE (MCA) Easy 4 Marks 2025

Operating Systems → Deadlock

Complete the following statement by choosing the correct option. For a deadlock to occur, the four conditions namely Mutual Exclusion, Hold and wait, No preemption, circular wait

Choose One:

A) May or may not hold

B) The circular wait does not implies hold and wait condition

C) Are completely independent

D) Must hold simultaneously

Q57 MCQ CUET-PG COMPUTER SCIENCE (MCA) Medium 4 Marks 2025

Operating Systems → Memory management

External fragmentation occurs

Choose One:

A) When enough total memory space exists to satisfy a request, but it is not contiguous, storage is fragmented into a large number of small holes.

B) When enough total memory space exists to satisfy a request, which is contiguous, storage is fragmented into a large number of small holes.

C) When memory is empty.

D) Always.

Q58 MCQ CUET-PG COMPUTER SCIENCE (MCA) Medium 4 Marks 2025

Operating Systems → Paging & segmentation

Details of a paging system for memory management are as follows: Logical address space: 32 KB, Page Size: 4 KB, Physical Memory size: 64 KB. The number of pages in the logical address space and number of page frames in physical memory, respectively, are:

Choose One:

A) 4, 16

B) 4, 12

C) 8, 16

D) 3, 16

Q59 MCQ CUET-PG COMPUTER SCIENCE (MCA) Hard 4 Marks 2025

Operating Systems → Virtual memory

Consider a page reference string as 7, 0, 1, 2, 0, 3, 0, 4, 2, 3, 0, 3, 2. Assume that there are 3-page frames available. Calculate the total number of page faults for the above reference string if LRU policy is used for page replacement.

Choose One:

A) 10

B) 8

C) 9

D) 11

Q60 MCQ CUET-PG COMPUTER SCIENCE (MCA) Medium 4 Marks 2025

Operating Systems → Disk scheduling

Match List-I with List-II: (A) Seek Time (B) Access Time (C) Rotational Latency (D) Disk Bandwidth with (I) Total bytes transferred divided by total time (II) Time for disk to rotate sector to head (III) Seek Time + Rotational Latency (IV) Time for disk arm to move to cylinder.

Choose One:

A) (A)-(I), (B)-(II), (C)-(III), (D)-(IV)

B) (A)-(I), (B)-(III), (C)-(II), (D)-(IV)

C) (A)-(I), (B)-(II), (C)-(IV), (D)-(III)

D) (A)-(IV), (B)-(III), (C)-(II), (D)-(I)

PYQBOOK

Filter Questions

Complete the following statement by choosing the correct option. For a deadlock to occur, the four conditions namely Mutual Exclusion, Hold and wait, No preemption, circular wait

Choose One:

External fragmentation occurs

Choose One:

Details of a paging system for memory management are as follows: Logical address space: 32 KB, Page Size: 4 KB, Physical Memory size: 64 KB. The number of pages in the logical address space and number of page frames in physical memory, respectively, are:

Choose One:

Consider a page reference string as 7, 0, 1, 2, 0, 3, 0, 4, 2, 3, 0, 3, 2. Assume that there are 3-page frames available. Calculate the total number of page faults for the above reference string if LRU policy is used for page replacement.

Choose One:

Match List-I with List-II: (A) Seek Time (B) Access Time (C) Rotational Latency (D) Disk Bandwidth with (I) Total bytes transferred divided by total time (II) Time for disk to rotate sector to head (III) Seek Time + Rotational Latency (IV) Time for disk arm to move to cylinder.

Choose One: