The relevant material for this question is in lecture $17$ and Ch$.3\mathrm{.}4\mathrm{.}2.$

A link between host A and host B has a transmission rate of$80$Mbps and propagation delay of $0\mathrm{.}95$s$.$ The processing and queueing delays are negligible. Consider packets of size $100$Bytes traveling on that link. Answer the following questions.

$$ A$.$ What is the time utilization of the link if a stop$-$and$-$wait protocol was used?

$$ B$.$ What should be the sender window size N of a pipelined protocol in order for the link to achieve $50\%$ time utilization?