TCP/IP is a conventional communication protocol on computer networks. It regulates how network devices are connected and the way information is transmitted. It is used on the Internet and private networks such as intranets and extranets.
TCP stands for Transmission Control Protocol. On the other hand, IP stands for Internet Protocol. TCP/IP is a combination of two independent network communication protocols, TCP and IP, in the Open Source Interconnections (OSI) Model. It is based on the client/server model in which one device (the client) requests and is served by another device (the server) on the network.
The TCP corresponds to the transport layer, whereas IP matches the network layer of the OSI model. The TCP (transport layer) manages and transports information across IP networks. The TCP ensures the reliability of the transmission of information from one device to another. On the other hand, the IP (network layer) handles the address issues of the transmitted information to ensure it reaches the targeted destination. Web browsers use the TCP to communicate with servers on the Worldwide Web using a range of protocols contained in the TCP/IP package, including HTTP, HTTPS, FTP, IMAP, TELNET, SMTP and SSH.
Internet Protocol is connectionless. The protocol does not rely on connection wires for communication between network devices.