3.2

Answer:In general, the operating system must save the state of the currently running process and restore the state of the process scheduled to be run next. Saving the state of a process typically includes the values of all the CPU registers in addition to memory allocation. Context switches must also perform many architecture-specific operations, including flushing data and instruction caches.

3.6

Answer:

#include<sys/types.h>
#include<stdio.h>
#include<unistd.h&