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The bit used to signify that the cache location is updated is ________

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The bit used to signify that the cache location is updated is ________

(a) Dirty bit

(b) Update bit

(c) Reference bit

(d) Flag bit

This question was addressed to me during an interview for a job.

This interesting question is from Caches topic in portion Memory System of Computer Architecture

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Best answer
Right option is (a) Dirty bit

Best explanation: When the cache location is updated in order to signal to the processor this bit is used.

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