Which of the following has the least memory capacity?

Correct option is D

The correct answer is (d) Cache Memory
Explanation:
· Cache memory is a very high-speed semiconductor memory that can speed up the CPU.
· Due to its high cost and complexity, it is typically produced in very small sizes (usually in MBs) compared to other storage types.
Information Booster:
· Memory Hierarchy (Speed): Cache > RAM > SSD > HDD.
· Memory Hierarchy (Capacity): HDD > SSD > RAM > Cache.
Additional Knowledge:
· Main Memory (RAM): Primary storage used for running applications; larger than cache but smaller than disk.
· CD-ROM: A legacy optical storage medium with a standard capacity of ~700 MB.