Q. Which of the following has the fastest access time?
✅ Correct Answer: (D)
Semiconductor memory
Explanation:
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):
- Magnetic tape – Very slow (sequential access)
- Compact disk (CD) – Slower than magnetic disks (optical access)
- Magnetic disk (like HDD) – Faster than tapes and CDs (random access, but mechanical parts involved)
- Semiconductor memory – Fastest (purely electronic, no mechanical delay)
Explanation by: Mr. Dubey
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):
- Magnetic tape – Very slow (sequential access)
- Compact disk (CD) – Slower than magnetic disks (optical access)
- Magnetic disk (like HDD) – Faster than tapes and CDs (random access, but mechanical parts involved)
- Semiconductor memory – Fastest (purely electronic, no mechanical delay)