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A computer system has a main memory access time of 60ns. You as a computer organization expert have been asked to reduce the final memory

A computer system has a main memory access time of 60ns. You as a computer organization expert have been asked to reduce the final memory access time to 20ns by adding a suitable cache. Assume that the miss probability is 10%. What should be the fastness of cache (in terms of access time) for this requirement?

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