Q$2(20)$: a$.$ Let us use a translation look$-$aside buffer called TLB that is fast$-$lookup hardware cache with

the access time can be neglected or in other words, zero. We assume the average memory access time is

$20ns.$ If the hit ratio is $90\%,$ what is the effective access time $($EAT$)?$ What is the slowdown ratio due to

miss?

If we get the EAT is $20\%$ greater than the memory access time, what is the hit ratio $H$ we desire?

b$.$ Let us consider a similar solution but the fast cache access needs time as well. Assume it needs $5ns.$

Also assume the memory access is $20ns.$ So$,$ all access has two accesses, one for table lookup and one

for data and instruction. The only difference is that one for hit it needs $25ns$ while for miss is needs $40ns.$

We can calculate the effective access time like a$)$ as well. If the hit ratio is $90\%,$ what is the EAT? What is

the slowdown ratio due to miss? If the EAT is $20\%$ greater than the hit memory access time, what is the

hit ratio $H$