What below statements are true regarding memory virtualization in typical modern OSes?

A$.$ Virtual address spaces are the same size as the total

space available in physical memory.

B$.$ In a modern multiprogramming environment the pro$-$

grammer knows at the time of coding how much space

will be available and where that space will be$.$

C$.$ A multiprogramming system is one thiat supports call$-$

ing code written in different programming languages

$($e$.$g$.,$ calling assembly code from C$).$

D$.$ A physical address is the location of a byte relative

to the beginning of the program and the processor

translates that int a logical address.

E$.$ A hardware mechanism is needed for translating vir$-$

tual addresses to physical addresses at the time of

execution of the instruction that contains the refer$-$

ence.

Your test version is $\text{'}A\text{'}.$ Mark this on the bottom of the an$-$

swer sheet only after you've answered all questions.