Which of the following(s) are main memory?
(A) Virtual memory
(B) Cache memory
(C) RAM
(D) SSD
Pick an option to check yourself, or open the answer below.
Show answer & explanation
Correct answer: B. (B) and (C) Only
Explanation
RAM is main (primary) memory and the official key also includes cache. Virtual memory is an abstraction backed by disk, and an SSD is secondary storage.
Note: Strictly, main memory is RAM; cache is a separate, faster level of primary memory. The official key counts cache as well.
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