Using the same connection between two hosts, it is possible to send a series of packets in a single transmission. Please break down the time it takes for a single package to go from beginning to conclusion. Is it expected that one of the delays would last a certain period of time while the other delay's length will be more malleable?

Host A sends the information of size 3000 bytes to Host B using TCP protocol. As long as Host B receives each packet in size 1000 bytes, Host B must acknowledge Host A. We assume the header size in each packet is 40 bytes, the starting sequence number used by Host A is 1000, and the window size of the sender side is 3000 bytes. What is the value of SND.NXT when the first packet is sent out, but not acknowledged?    1000   2000   3000   1999   If a host is monitored, and there are seven TCP packets captured: {S1, S2, S3, S4, S5, S6, E1}, where Si represents ith Send packet, and Ej represent jth Echo packet. E1 here acknowledges and echoes all the six Send packets cumulatively. Which of the follow matching can make more sense to represent the RTT of the connection chain? E1 matches with S1   E1 matches with S4   E1 matches with S5   E1 matches with S6

Repeatedly sending packets via the same connection between two hosts is technically possible. List the factors that contribute to the total time it takes for a single packet to go from beginning to finish. Is it expected that one of the delays would last a certain period of time and the other delay's length will be more variable?

Suppose you want to deliver the gift to your friend, Jashim as a birthday gift. You packed the gift in five different packets, give them serial no and send them to your friend’s address at a time. Jashim has a PA to collect all packets and store them by their serial. If Jashim’s PA can receive all the packets serially then deliver them to Jashim. If any packet is missing, Then the PA inform you to resend the packet again.I. Which protocol you want to use to avoid over cost if resend is required.II. Describe your used protocol with an appropriate diagram using the above description.