Ques: Consider a memory of 32 blocks (labeled 0 through 31) and a cache of 8 blocks (labeled 0 through 7). In the questions below, list only correct results:

a. Under direct mapping, which blocks of memory contend for block 2 of the cache?

b. Under 4-way set associativity, to which blocks of cache may element 31 of memory go?

c. In the following sequence of memory block references from the CPU, beginning from an empty cache, on which reference must the cache layout for a direct mapped and a 4-way set associative cache first differ?

Order of reference	1	2	3	4	5	6	7	8
Block referenced	0	15	18	5	1	13	15	26

d. Suppose a direct-mapped cache is equipped with a single-block victim cache. Out of the following sequence of memory block references from the CPU (R denotes read (or load) and W denotes write (or store)), on which references is the block retrieved from the victim cache? If no block is ever thus retrieved, so state. Show your reasoning.

Order of reference	1	2	3	4	5	6	7	8	9	10	11	12
Type of reference	R	R	W	R	R	W	R	R	W	R	R	W
	0	15	18	5	1	13	15	26	6	6	15	3