Identify the correct order of the following computer memory types ranked from slowest to fastest in terms of access time. Choose the correct answer from the options given below:

1.Cache

2.CDROM

3.Hard Disk

4.RAM

5.Register

A3, 2, 1, 4, 5

B5, 1, 4, 3, 2

C2, 3, 4, 1, 5 ✓ Correct

D4, 1, 5, 3, 2

Correct answer: (C) 2, 3, 4, 1, 5

Explanation

Ranked by access time from slowest to fastest the order is CDROM, hard disk, RAM, cache and then register.

The CDROM is slowest because a laser must physically read a spinning optical disc.

The hard disk is next, faster than optical but limited by its spinning platters and moving head.

RAM is much faster as it is purely electronic with no moving parts.

Cache is faster than RAM, sitting even closer to the processor for quick reuse of data.

The register is fastest of all, holding data right inside the processor for immediate use.

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