Question

In which of the following the data is preserved within the cache?

(a) logical cache

(b) physical cache

(c) unified cache

(d) harvard cache

This question was posed to me in a national level competition.

This interesting question is from Size of Cache in division Memory Systems of Embedded Systems

Answer 1

Correct choice is (b) physical cache

Explanation: In the physical cache, the data is preserved within the cache because it does not flush out during the context switching but on the other hand, the logical cache flushes out the data and clear it during a context switching.