Explore topic-wise MCQs in Operating System.

This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Operating System knowledge and support exam preparation. Choose a topic below to get started.

1.

IN_THE_________ALGORITHM,_THE_DISK_HEAD_MOVES_FROM_ONE_END_TO_THE_OTHER_,_SERVICING_REQUESTS_ALONG_THE_WAY._WHEN_THE_HEAD_REACHES_THE_OTHER_END,_IT_IMMEDIATELY_RETURNS_TO_THE_BEGINNING_OF_THE_DISK_WITHOUT_SERVICING_ANY_REQUESTS_ON_THE_RETURN_TRIP.?$

A. LOOK
B. SCAN
C. C-SCAN
D. C-LOOK
Answer» D. C-LOOK
Discussion
2.

In the ______ algorithm, the disk arm goes as far as the final request in each direction, then reverses direction immediately without going to the end of the disk.$

A. LOOK
B. SCAN
C. C-SCAN
D. C-LOOK
Answer» B. SCAN
Discussion
3.

In the ______ algorithm, the disk arm starts at one end of the disk and moves toward the other end, servicing requests till the other end of the disk. At the other end, the direction is reversed and servicing continues?

A. LOOK
B. SCAN
C. C-SCAN
D. C-LOOK
Answer» C. C-SCAN
Discussion
4.

Consider a disk queue with requests for I/O to blocks on cylinders :

A.
B. scheduling, the total number of head movements is, if the disk head is initially at 53 :
C. 224
Answer» C. 224
Discussion