Disk Scheduling Algorithms in Operating Systems Consider Only Seek Distances

question 17

Multiple Choice

Disk scheduling algorithms in operating systems consider only seek distances, because

• A) rotational latency is insignificant compared to the average seek time.
• B) modern disks do not disclose the physical location of logical blocks.
• C) the operating systems may have other constraints such as writes may be more urgent than reads.
• D) it is difficult to optimize seek time in disk hardware.

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