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Ans. TCP/IP is the communication protocol for the Internet. It defines the rules, computers must follow to communicate with each other over the Internet.
The TCP/IP is a protocol used with E-mail transmission. In fact, it is a set of protocols, i.e. TCP and IP.
TCP is a protocol, which is responsible for finding a path to the destination. It also splits the message into several datagrams, if it does not fit in one datagram.
Therefore, these datagrams are sent through different alternate paths toward the destination. The TCP makes sure that the datagram arrives at the destination correctly.
IP (Internet Protocol): It is used by the Internet for transferring messages from one machine to another. The messages are sent in the form of packets.
IP defines the packet structures that encapsulate the data to be delivered. It also defines addressing methods that are used to label the datagram with source and destination format.