In computer systems, what is the primary role of the Translation Lookaside Buffer (TLB)?
Answer and explanation
Correct answer: D. Caching recent virtual-to-physical page address translations to speed up memory access
- Step 1: Review virtual memory management and the Memory Management Unit (MMU).
- Step 2: The TLB is a high-speed hardware associative cache that stores recent virtual-to-physical address mappings, avoiding costly multi-level page table lookups in main RAM on memory accesses.
Answer
Caching recent virtual-to-physical page address translations to speed up memory access.
Why not the others: L1/L2 caches store instructions; network interface cards buffer outgoing packets; Phase-Locked Loops synchronize clock frequencies.
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