Multi$-$level Feedback with $2$ queues. Queue serves $1$ quantum $($unit of time$)$ at a time while queue $2$

serves $2$ quantums at a time. All processes get serviced from queue $1$ initially in FCFS fashion and if they

do not complete, they move to queue $2.$ Queue $2$ runs a round robin scheduler. Assume that Queue $1$ has

a higher priority than Queue $2,$ and assume that a process arriving to queue $1$ cannot preempt an already

running process from queue $2$ within its $2$ quantum.