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A hard disk rotates at 6000 RPM. Its average rotational latency is

2142Medium DSSSB TGT Computer Science 0 replies 1 views
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A hard disk rotates at 6000 RPM. Its average rotational latency is

  • A2.5 ms
  • B10 ms
  • C5 ms
  • D20 ms
Correct answer: C

Explanation

One rotation takes 60 / 6000 = 10 ms and the average latency is half a rotation, i.e. 5 ms.
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