Mass Storage Structure

Multiple Choice questions & answers are available for a Computer Science students to clear GAT, NTS, ECAT exams, various technical interview, competitive examination, and other entrance exam. Mass Storage Structure is the important Topic for a computer science and technical students and one should practice these Mcqs to grasp good knowledge on the topic.

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16.
The set of tracks that are at one arm position make up a ___________

Magnetic disks

Electrical disks

Assemblies

Cylinders

17.
The time taken to move the disk arm to the desired cylinder is called the :

Positioning time

Random access time

Seek time

Rotational latency

18.
The time taken for the desired sector to rotate to the disk head is called :

Positioning time

Random access time

Seek time

Rotational latency

19.
When the head damages the magnetic surface, it is known as _________

Disk crash

Head crash

Magnetic damage

All of the mentioned

20.
A floppy disk is designed to rotate ___________ as compared to a hard disk drive.

Faster

Slower

At the same speed

None of the mentioned

21.
The host controller is :

Controller built at the end of each disk

Controller at the computer end of the bus

All of the mentioned

None of the mentioned

22.
______ controller sends the command placed into it, via messages to the _____ controller.

Host, host

Disk, disk

Host, disk

Disk, host

23.
The disk bandwidth is :

The total number of bytes transferred

Total time between the first request for service and the completion on the last transfer

The total number of bytes transferred divided by the total time between the first request for service and the completion on the last transfer

None of the mentioned

24.
Whenever a process needs I/O to or from a disk it issues a ______________

System call to the CPU

System call to the operating system

A special procedure

All of the mentioned

25.
If a process needs I/O to or from a disk, and if the drive or controller is busy then :

The request will be placed in the queue of pending requests for that drive

The request will not be processed and will be ignored completely

The request will be not be placed

None of the mentioned

26.
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 :

600

620

630

640

27.
Random access in magnetic tapes is _________ compared to magnetic disks.

Fast

Very fast

Slow

Very slow

28.
Magnetic tape drives can write data at a speed ________ disk drives.

Much lesser than

Comparable to

Much faster than

None of the mentioned

29.
On media that use constant linear velocity (CLV), the _____________ is uniform.

Density of bits on the disk

Density of bits per sector

The density of bits per track

None of the mentioned

30.
SSTF algorithm, like SJF __________ of some requests.

May cause starvation

Will cause starvation

Does not cause starvation

Causes aging

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