$2.(7$ points$)$ Determine the average memory latency of a memory system with two levels of cache with the parameters below. Show your work.

$3.(7$ points$)$ What is the cache size for a cache with the following configuration? Give your answer using the appropriate metric prefix $(\backslash (\backslash$mathrm$\{$B$\},\backslash$mathrm$\{$KB$\},\backslash$mathrm$\{$MB$\}\backslash ),$ or GB $).$

$-40$ bit address

$-20$ bit tag

$-4-$way set associative cache

$-8-$byte cache blocks

$-$ byte addressable