A

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Q. Which of the following has the fastest access time?

  • (A) Compact disk
  • (B) Magnetic tapes
  • (C) Magnetic disk
  • (D) Semiconductor memory
  • Correct Answer - Option(D)
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  • Filed under category Computer
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Explanation by: Admin

Semiconductor memory (like RAM, cache) is the fastest in terms of access time, because it uses electronic circuits with no moving parts.

Comparison of Access Times (from slowest to fastest):

  1. Magnetic tape – Very slow (sequential access)
  2. Compact disk (CD) – Slower than magnetic disks (optical access)
  3. Magnetic disk (like HDD) – Faster than tapes and CDs (random access, but mechanical parts involved)
  4. Semiconductor memory – Fastest (purely electronic, no mechanical delay)

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