Cache OperationIn this problem, you are asked to simulate the operation of a cache. You can make the following assumptions: $$There is only one level of cache $$Physical addresses are $8$ bits long $($m$=8)$The block size is $4$ bytes $($B$=4)$The cache has $4$ sets $($S$=4)$The cache is direct mapped $($E$=1)($a$)$ What is the total capacity of the cache? $($in number of data bytes$)($b$)$ How long is a tag? $($in number of bits$)$