Consider the figure below in which a TCP sender and receiver communicate over a$$connection in which the segments can be lost. The TCP sender wants to send a total$$of $10$ segments to the receiver and sends an initial window of $5$ segments at t $=1,2,3,4,$ and $5,$ respectively. Suppose the initial value of the sequence number is $66$ and$$every segment sent to the receiver each contains $643$ bytes. The delay between the$$sender and receiver is $7$ time units, and so the first segment arrives at the receiver at$$t $=8,$ and an ACK for this segment arrives at t $=15.$ As shown in the figure, $1$ of the$5$ segments is lost between the sender and the receiver, but one of the ACKs is lost.$$Assume there are no timeouts and any out of order segments received are thrown out.