Disk Scheduling - 1 - Operating System Questions & Answers

1.

The heads of the magnetic disk are attached to a _____ that moves all the heads as a unit.

   A.) spindle
   B.) disk arm
   C.) track
   D.) none of the mentioned

Answer: Option 'B'

disk arm

2.

In _______ information is recorded magnetically on platters.

   A.) magnetic disks
   B.) electrical disks
   C.) assemblies
   D.) cylinders

Answer: Option 'A'

magnetic disks

3.

The heads of the magnetic disk are attached to a _____ that moves all the heads as a unit.

   A.) spindle
   B.) disk arm
   C.) track
   D.) none of the mentioned

Answer: Option 'B'

disk arm

4.

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

   A.) magnetic disks
   B.) electrical disks
   C.) assemblies
   D.) cylinders

Answer: Option 'D'

cylinders

5.

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

   A.) positioning time
   B.) random access time
   C.) seek time
   D.) rotational latency

Answer: Option 'C'

seek time

6.

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

   A.) positioning time
   B.) random access time
   C.) seek time
   D.) rotational latency

Answer: Option 'D'

rotational latency

7.

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

   A.) disk crash
   B.) head crash
   C.) magnetic damage
   D.) all of the mentioned

Answer: Option 'B'

head crash

8.

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

   A.) faster
   B.) slower
   C.) at the same speed
   D.) none of the mentioned

Answer: Option 'B'

slower

9.

The host controller is :

   A.) controller built at the end of each disk
   B.) controller at the computer end of the bus
   C.) all of the mentioned
   D.) none of the mentioned

Answer: Option 'B'

controller at the computer end of the bus

10.

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

   A.) host, host
   B.) disk, disk
   C.) host, disk
   D.) disk, host

Answer: Option 'C'

host, disk

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