We have a link with transmission rate R$.$ This link is initially idle, with no packets queued to be send on it or in transmission.

$($a$)$ If P packets, each of length L$,$ arrive at this link, what will be the average queuing delay for P packets? $(1$ pt$)$

$($b$)$ If a batch of P packets, each of length L$,$ arrive at this link every LP$/$R seconds, what will be the average queuing delay for a packet? $(1$ pt$)$