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

a. If a memory reference takes 150 nanoseconds, how long does a paged memory reference take?

b. If we add TLBs, and 80% of all page table-references are found in the TLBs, what is the effect memory access time (assume that finding the page-table entry in the TLBs takes 0 time if the entry is there)?