Question

The use of cache memory is to

• A. Increase CPU speed
• B. Store operating system
• C. Store user defined files
• D. Data backup

Hint:

Cache Memory = Very Fast Memory = Faster CPU Performance.

Answer 1

The Correct Option is A

Step 1: Understand the question.
We must state the main use of cache memory in a computer.

Step 2: Where cache sits.
Cache memory is a small, very fast memory placed between the CPU and the main RAM.

Step 3: The speed gap.
The CPU runs much faster than RAM. If the CPU waited for RAM every time, it would slow down a lot.

Step 4: How cache helps.
Cache keeps the instructions and data the CPU uses most often. The CPU finds them quickly, so it does not waste time waiting. This makes the CPU work faster overall.

Step 5: Reject the other options.
Cache does not store the whole operating system, does not keep user files, and is not used for data backup. Those jobs belong to RAM and disks.

Step 6: Conclude.
So the purpose of cache memory is to increase CPU speed, which is option 1.

\[ \boxed{\text{Increase CPU speed}} \]