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____-replacement strategy replaces the most recently referenced ____ if an existing ____ needs to be replaced

5. ____-replacement strategy replaces the most recently referenced ____ if an existing ____ needs to be replaced.

1. Buffer
2. Block
3. Both A and B
4. None of the above

Answer: B) Block

Explanation:

Block-replacement strategy replaces the most recently referenced block if an existing block needs to be replaced.