7. Consider Consider a computer system with 16-bit byte addresses and a direct-mapped, 8 KiB cache of 4 entries. a) How many bits are in the index and how many bits are in the tag portion of the address? (5%) b) Find the index and tag for each of the following sequence of accesses, given as byte addresses: 7, 8200, 9000, 7, 4100. (10%) [Hint: 7101112, 4100,0 10000000001002, 8200,0 100000000010002, 9000,0 100011001010002] c) Determine the hit rate for the above sequence of accesses. (5%)