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ISRO2008-49

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option (c) .The total time to prepare a disk drive mechanism for a block of data to be read from it is latency plus seek time.

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To "prepare" the disk drive mechanism...

To transfer data to or from a block of Secondary Memory, the R/W head:

  1. Reaches the right track.
  2. Reaches the right sector by disk rotation.
  3. Transfers the data.

The corresponding times taken do perform the above actions are:

  1. Seek time
  2. Rotational latency
  3. Transmission time

To "prepare" the disk drive mechanism would mean to do the first two steps.

Hence, Option C

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