$[10]$ Textbook Exercise $6\mathrm{.}3.$ Consider memory storage of a $32-$bit word stored at memory word $42$ in a byte$-$addressable memory.

$($a$)$ What is the byte address of memory word $42?$

$($b$)$ What are the byte addresses that memory word $42$ spans?

$($c$)$ Draw the number $0$xFF$223344$ stored at word $42$ in both big$-$endian and little$-$endian machines. Your drawing should be similar to Figure $6\mathrm{.}4.$ Clearly label the byte address