Subject
Computer Science
Topic
Computer Hardware
In cache memory, what is the 'write-through' policy?
In cache memory, what is the 'write-through' policy?
a)
Data is written only to the cache, and updated in main memory later.b)
Data is written to both the cache and main memory at the same time.c)
Data is written directly to main memory, bypassing the cache.d)
Data from multiple write operations is bundled before being written to memory.Explanation
The write-through policy is simpler to implement and ensures that main memory is always up-to-date. However, it can be slower because every write operation has to wait for the write to complete in the slower main memory. This contrasts with the 'write-back' policy, which is generally faster but more complex.Related questions
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