TCP/IP stands for TRANSMISSION Control Protocol/Internet Protocol and is a basic, connection-oriented and reliable transport protocol of the Internet. TCP offers full-duplex SERVICE in which data can flow in both directions at the same time. It adds reliability and connection-oriented features to the services of IP. It is a three-phase service which implies that TWO TCPs establish a DEDICATED connection between themselves in the first, transfer data in the second and then release the path in the third phase. It can be used for secure online PAYMENT transactions as it uses Acknowledgement (ACK) mechanism to check the safe arrival of data.

TCP/IP stands for Transmission Control Protocol/Internet Protocol and is a basic, connection-oriented and reliable transport protocol of the Internet. TCP offers full-duplex service in which data can flow in both directions at the same time. It adds reliability and connection-oriented features to the services of IP. It is a three-phase service which implies that two TCPs establish a dedicated connection between themselves in the first, transfer data in the second and then release the path in the third phase. It can be used for secure online payment transactions as it uses Acknowledgement (ACK) mechanism to check the safe arrival of data.