Question

the performance of cache memory is measured in terms of a quantity called ____. options: hit and, miss ratio, direct access, hit ratio

Explanation:

Cache memory performance is primarily measured by hit ratio, which is the percentage of memory accesses that are successfully retrieved from the cache (instead of needing to access slower main memory). The other options are incorrect: "Hit AND" is not a relevant metric, "Miss Ratio" is the inverse of hit ratio but is not the standard primary measure, and "Direct Access" refers to a memory access method, not a performance metric.

Answer:

D. Hit Ratio