Repeat Problem $3$ when the station has a buffer with capacity $1.$ That is$,$ there is buffer space to hold one item waiting while the processor is busy with an item that arrived previously. Items that arrive when the buffer is full are rejected.

Repeat Problem $3$ for a system with deterministic inter$-$arrival times equal to $\frac{1}{3}$ minute, and i$.$i$.$d$.exp(3)$ processing times.

Repeat Problem $4$ for a system with deterministic inter$-$arrival times equal to $\frac{1}{3}$ minute, and i$.$i$.$d$.exp(3)$ processing times.