Subject
Computer Science
Topic
Computer Hardware
Which CPU cache policy writes updates to memory only on eviction, combining multiple writes?
Which CPU cache policy writes updates to memory only on eviction, combining multiple writes?
ক)
Write-backখ)
Write-throughগ)
No-write allocateঘ)
Write-around onlyExplanation
Write-back caches mark lines dirty and defer memory writes until eviction, reducing bandwidth. Write-through pushes every write to memory, simplifying coherence at higher traffic cost. Allocation policy (write-allocate vs no-write-allocate) is orthogonal. Choice affects performance and consistency.Related questions
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