Question A$6$

Memory management is the functionality of an operating system which handles or manages primary memory and moves processes back and forth between main memory and disk during execution. It keeps track of each and every memory location, regardless of either it is allocated to some processes or it is free.

$($a$)$ Distinguish the TWO major differences between logical and physical addresses. $(4$ marks$)$

$($b$)$ Consider a logical address space of $64$ pages of $1024$ words each, mapped onto a physical memory of $32$ frames. How many bits are there in the logical and physical addresses respectively?

$(2$ marks$)$

$($c$)$ Recall that paging is implemented by breaking up an address into a page and offset number. Why are "page sizes" always powers of $2?$

$(4$ marks$)$