engineering computer science MCQ #243

A disk has an average seek time of 5 ms and a rotation speed of 5400 rpm. What is the average access time?

engineering computer science MCQ #243

  1. Question 1

    Q1. A disk has an average seek time of 5 ms and a rotation speed of 5400 rpm. What is the average access time?

    • A) 10.55 ms
    • B) 8.33 ms
    • C) 11.11 ms
    • D) 9.45 ms

    Answer: 10.55 ms

    Explanation: Average rotational latency = 0.5 * (60 / 5400) = 5.55 ms, average access time = average seek time + average rotational latency = 5 + 5.55 = 10.55 ms.