Disk scheduling

In _______ information is recorded magnetically on platters.

• magnetic disks

• electrical disks

• assemblies

• cylinders

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

• spindle

• disk arm

• track

• none of the mentioned

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

• magnetic disks

• electrical disks

• assemblies

• cylinders

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

• positioning time

• random access time

• seek time

• rotational latency
  

he time taken for the desired sector to rotate to the disk head is called ____________

• positioning time

• random access time

• seek time

• rotational latency

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

• disk crash

• head crash

• magnetic damage

• all of the mentioned

A pen drive access the data ___________ as compared to a hard disk drive.

• faster

• slower

• at the same speed

• none of the mentioned

What is the host controller?

• controller built at the end of each disk

• controller at the computer end of the bus

• all of the mentioned

• none of the mentioned

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

• host, host

• disk, disk

• host, disk

• disk, host

What is the disk bandwidth?

• 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