Consider a paging system with the page table stored in memory.

a. If a memory reference takes 300 nanoseconds, how long does a paged memory reference take?

b. If we add TLBs, and 80 percent of all page-table references are found in the TLBs, what is the effective memory reference time? (Assume that finding a page-table entry in the TLBs takes zero time, if the entry is there.)