Operating System (OS)
The total time to prepare a disk drive mechanism for a block of data to be read from it is

latency plus seek time plus transmission time
latency plus transmission time
None of these
latency plus seek time
latency

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Operating System (OS)
Feed back queue

None of these
are used to favor real-time tasks
dispatch tasks according to execution characteristics
are very easy to implement
require manual intervention to implement properly

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