a$)$ Illustrate when timeout events happen in the figure.

b$)$ Compare slow start and congestion avoidance. Give two reasons why slow start is used, and when slow start does a better job.

c$)$ Identify the intervals when slow start is used in the above figure. Identify which of the above reasons apply for each interval, why.

$($d$)$ Identify the intervals when congestion avoidance is used. Illustrate why it is used instead of slow start in these intervals.

$($e$)$ Identify the intervals when fast retransmission is used. Illustrate why and how it is used.

$($f$)$ Identify the intervals when TCP fast recovery is used. Illustrate why and how it is used.