engineering computer science MCQ #108

A disk has 2000 tracks, 5 sectors per track, and rotates at 7200 rpm. What is the average rotational latency?

engineering computer science MCQ #108

  1. Question 1

    Q1. A disk has 2000 tracks, 5 sectors per track, and rotates at 7200 rpm. What is the average rotational latency?

    • A) 4.17ms
    • B) 8.33ms
    • C) 12.5ms
    • D) 16.67ms

    Answer: 4.17ms

    Explanation: Average rotational latency = 1/2 * (60 / rpm) = 0.5 * (60 / 7200) = 4.17ms.