QUESTION 1: Briefly describe the three types of processor scheduling.

QUESTION 2: What is the difference between preemptive and non-preemptive scheduling?

There is a currently running process and a new process arrives. And OS moved the currently running process to the Ready state. What kind of scheduling policy is the OSs selection function used for this case.?

QUESTION 3: You were given five processes with their arrival time and execution time for each in the table.

Process	Arrival time	Execution time
Processes A	0	4
Processes B	2	3
Processes C	3	4
Processes D	5	5

Develop the schedule (time diagram) for the following methods.

First-Come-First-Served (FCFS)

Round Robin

Shortest Process Next (SPN)

Assume the length of the time quantum, or slice is 1 (q=1)