Question

In computer architecture, which of the following correctly matches the fundamental unit used in the CPU, cache, and main memory respectively?

• A. CPU → Block, Cache → Word, Memory → Page
• B. CPU → Word, Cache → Block, Memory → Page
• C. CPU → Page, Cache → Word, Memory → Block
• D. CPU → Block, Cache → Page, Memory → Word

Hint:

In computer architecture, the CPU works with words, cache stores data in blocks, and memory is divided into pages for efficient management.

Answer 1

The Correct Option is B

Step 1: Understand the fundamental units.
- The CPU operates on data in units called words. A word is the smallest unit of data that a CPU can process in one operation.
- Cache stores data in blocks, which are small units of memory that are fetched together.
- Main memory is divided into pages, which are fixed-size blocks of memory.

Step 2: Analyze the options.
- (a) Incorrect: The CPU uses words, not blocks. Memory uses pages, but cache uses blocks, not words.
- (b) Correct: The CPU uses words, cache uses blocks, and memory uses pages. This is the correct mapping of fundamental units.
- (c) Incorrect: The CPU uses words, not pages. Memory uses pages, not blocks.
- (d) Incorrect: The CPU does not use blocks, and memory uses pages, not words.

Step 3: Conclusion.
The correct answer is (b).