Consider a two-level cache with access time 5 nsec and 80 nsec respectively. If the hit ratio is 95% and 75% respectively in the two caches and main memory access time is 250 nsec. What is the effective access time?

Assume that there are three (03) small caches, each consisting of eight (08) one-word blocks. One cache is fully associative, a second is two-way set associative, and third is direct mapped. Now, find the number of misses for each cache organization given the following sequence of block address: 0, 8, 0, 6, 8