by convention, a cache is named according to the amount of data it contains (i.e., a 4 kib cache can hold 4 kib of data); however, caches also require sram to store metadata such as tags and valid bits. for this exercise, you will examine how a cache configuration affects the total amount of sram needed to implement it as well as the performance of the cache. for all parts, assume that the caches are byte addressable, that addresses are 64 bits and words are 32 bits. a. calculate the total number of bits required to implement a 32 kib cache with two-word blocks. b. calculate the total number of bits required to implement a 64 kib cache with 32-word blocks. c. how much bigger is the 64 kib cache (implementation) than the 32 kib cache (implementation).