Explore topic-wise MCQs in Operating System.

This section includes 12 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.

RAID level ______ is also known as memory style error correcting code(ECC) organization.

A. 1
B. 2
C. 3
D. 4
Answer» C. 3
Discussion
2.

Consider a disk queue with requests for I/O to blocks on cylinders :98 183 37 122 14 124 65 67Considering SSTF (shortest seek time first) scheduling, the total number of head movements is, if the disk head is initially at 53 :

A. 600
B. 620
C. 630
D. 640
Answer» E.
Discussion
3.

The mean time to failure of a mirrored disk depends on :I) the mean time to failure of individual disksII) the mean time to repair

A. Only I
B. Only II
C. Both I and II
D. Neither I nor II
Answer» D. Neither I nor II
Discussion
4.

For swap space created in a seperate disk partition where no file system or directory structure is placed, _____________ used to allocate and deallocate the blocks.

A. special routines must be
B. normal file system routines can be
C. normal file system routines cannot be
D. swap space storage manager is
Answer» E.
Discussion
5.

When a fixed amount of swap space is created during disk partitioning, more swap space can be added only by :I) repartitioning of the diskII) adding another swap space elsewhere

A. only I
B. only II
C. both I and II
D. neither I nor II
Answer» D. neither I nor II
Discussion
6.

The data structue for a sector typically contains :

A. header
B. data area
C. trailer
D. all of the mentioned
Answer» E.
Discussion
7.

______ is used in operating system to separate mechanism from policy.

A. Single level implementation
B. Two level implementation
C. Multi level implementation
D. None of the above
Answer» C. Multi level implementation
Discussion
8.

The amount of time required to read a block of data from a disk into memory is composed of seek time, rotational latency, and transfer time. Rotational latency refers to

A. the time its takes for the platter to make a full rotation
B. the time it takes for the read-write head to move into position over the appropriate track
C. the time it takes for the platter to rotate the correct sector under the head
D. none of the above
Answer» B. the time it takes for the read-write head to move into position over the appropriate track
Discussion
9.

Which RAID level refers to disk mirroring?

A. 0
B. 1
C. 2
D. 3
Answer» C. 2
Discussion
10.

A_TYPICAL_TAPE_DRIVE_IS__________A_TYPICAL_DISK_DRIVE.?$

A. more expensive than
B. cheaper than
C. of the same cost as
D. none of the mentioned
Answer» B. cheaper than
Discussion
11.

The surface area of a tape is ________ the surface area of a disk.$

A. much lesser than
B. much larger than
C. equal to
D. none of the mentioned
Answer» C. equal to
Discussion
12.

Random access to tape is _______ a disk seek?

A. much slower than
B. much faster than
C. comparable to
D. none of the mentioned
Answer» B. much faster than
Discussion