$12$

i$)$ At what time does the three$-$way handshake complete, and which packets are involved in this process? Mention their sequence number and acknowledgement number? $[3$ marks$]$

ii$)$ What is the size of the TCP segment sent by the client in Packet No$.8,$ and what does this size indicate? $[3$ marks$]$

iii$)$ Calculate the round$-$trip time $($RTT$)$ for the data segment with Seq$=2026.$ Identify the corresponding ACK packet and compute the RTT$.[4$ marks$]$