Let WB and WT be two set-associative cache organizations that use the LRU algorithm for cache block replacement. WB is a write-back cache and WT is a write-through cache. Which of the following statements is FALSE?

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Computer Science · Computer Organization

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Every write hit in a write-back cache (WB) leads to an immediate data transfer from cache to main memory.

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Answer 1

Every write hit in a write-back cache (WB) leads to an immediate data transfer from cache to main memory.

Answer 2

Each cache block in a write-back cache (WB) requires a dirty bit.

Answer 3

A read miss in WB may lead to the eviction of a dirty block, causing a write to main memory.

Answer 4

Eviction of a block from a write-through cache (WT) does not lead to a data transfer from cache to main memory.

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