$($c$)$ Suppose that Host A is sending a file of $4$ MB to Host B over a TCP connection whose

RTT remains constant over the duration of the file transfer. Further assume that a

timeout event occurs at the $10$th transmission round. Assuming that TCP employs

slow start with initial congestion window $($cwnd$)$ size of $1$ MSS$=1$ KB and initial

slow start threshold $($ssthresh$)$ of $128$ KB$,$ answer the following

$($i$)$ How many RTTs will it take for the TCP connection to exit from the initial slow

start phase and enter into the congestion avoidance phase? $[5]$

$($ii$)$ How many RTTs will it take in total to transfer the entire file?