Q31

Consider the $3$ processes, $P1, P2$ and $P3$ shown in the table.

$$\small \begin{array}{|c|c|c|} \hline \textbf{Process} & \textbf{Arrival Time} & \textbf{Time Units Required} \\\hline \text{P1} & 0 & 5\\\hline \text{P2} & 1 & 7 \\\hline \text{P3} & 3 & 4 \\\hline \end{array}$$

The completion order of the $3$ processes under the policies FCFS and RR$2$ (round robin scheduling with CPU quantum of $2$ time units) are