Answer the question number $2$

$2$: Consider TCP implementation, server. Anything else, assume and state clearly. $[10]$

R$.$ Segment numbers S$4$ and S$8$ lost. Sis RTT calculated, and give a formula? Let $10$ segments be transmitted from sender S to receiver from receiver $R.$ Out of the above $10$ segmew retransmission of lost segments. Show set$/$reset of time out at sender $S$ and transfer of Acks $3$: $($a$)$ Client A and B initiate an HTTP sessi, which segment sample cannot be considered for calculation of RTT$?[15]$ the segment sent from:

i$.$ A to $S$