The BTV operating system has a $21-$bit virtual address, yet on certain embedded

devices, it has only a $16-$bit physical address. It also has a $2-$KB page size. How many

entries are there in each of the following?

a$)$ Aconventional, single$-$level page table

b$)$ An inverted page table

Consider the Hit ratio $=85\%,$ the Associative Lookup time $=8ns$ for TLB search,

$180ns$ for each memory access. Find Effective Access Time $($EAT$).$