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Which of the following has a separate cache for the data and instructions?

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Which of the following has a separate cache for the data and instructions?

(a) unified

(b) harvard

(c) logical

(d) physical

I have been asked this question during an online interview.

The above asked question is from Size of Cache topic in portion Memory Systems of Embedded Systems

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The correct option is (b) harvard

The explanation is: The Harvard cache have a separate cache for the data and the instruction whereas the unified cache has a same cache for the data and instructions.

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