engineering computer science MCQ #460

What is the average latency of a disk with a rotation speed of 7200 rpm and an average seek time of 5 ms?

engineering computer science MCQ #460

  1. Question 1

    Q1. What is the average latency of a disk with a rotation speed of 7200 rpm and an average seek time of 5 ms?

    • A) 10 ms
    • B) 8.33 ms
    • C) 5 ms
    • D) 13.33 ms

    Answer: 13.33 ms

    Explanation: Average rotational latency = 60 / (2 * 7200) = 4.166 ms, total latency = seek time + rotational latency = 5 + 4.166 + 4.166 = 13.33 ms.