Disk Scheduling - 1 - Operating System Questions & Answers

1.

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

2.

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

3.

The disk bandwidth is :

   A.) the total number of bytes transferred
   B.) total time between the first request for service and the completion on the last transfer
   C.) the total number of bytes transferred divided by the total time between the first request for service and the completion on the last transfer
   D.) none of the mentioned

Answer: Option 'C'

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

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 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

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