14. What happens to the data in the cache line if cache line is dirty? Select al

Question

14. What happens to the data in the cache line if cache line is dirty? Select all that applies.

A) Signifies that the region cached must be written back into the RAM and the cache line must be purged or replaced by new data as soon as possible.

B) The region cached will be written back into the RAM and the cache line will be immediately purged or replaced by new data only if the V bit is set.

C) Nothing if the V bit is clear.

D) Nothing if the region cached is "write-through" and the data in the cache line is not about to be purged or replaced by new data.

E) Nothing if the region cached is "write-back" and the data in the cache line is not about to be purged or replaced by new data.

Explanation / Answer

B) The region cached will be written back into the RAM and the cache line will be immediately purged or replaced by new data only if the V bit is set.

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