c$)(3$pts$)$ Explain briefly how the fast recovery works in TCP Reno.

d$)(6$pts$)$ Consider a TCP sender that sends a large amount of data and then goes idle at t$1$

$($since it has no more data to send$).$ It remains idle for a relatively long period of time and

then wants to send more data at t$2.$ What are the advantages and disadvantages of having

TCP use the CongWin and ssthreshold values from t$1$ when starting to send data at

t$2?$

e$)(7$pts$)$ Suppose that instead of a multiplicative decrease, TCP decreased the window size

by a constant value. Would the resulting additive increase additive decrease be fair, i$.$e$.,$

would it converge to an equal share of bandwidth?