Which of the following is the unit of Hard Disk Drive?

Which of the following is the unit of Hard Disk Drive?

  1. a) Megahertz
  2. b) Kilohertz
  3. c) Gigabyte
  4. d) HDD

From the BCC Assistant Programmer (CSE) February 2021 – Written (BUET) exam, question 6 of 20.

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