The abbreviation TCP/IP stands for Transmission Control Protocol/Internet Protocol. It refers to a group of network protocols that serve as the basis for communication both on the Internet and in numerous local networks. The model consists of several layers, each of which fulfills specific tasks. The TCP and IP protocols form the core of this network connection model.
The Internet Protocol (IP) is used to address and forward data packets between network devices. IP has the core task of ensuring that data packets find the right path through the network. The problem with this protocol, however, is that there is no guarantee that the data packets will be delivered in full. The order in which packets are sent is also not prescribed by IP addresses alone.
In contrast, the Transmission Control Protocol (TCP) was developed as a file transfer protocol with regard to the transport level. The task of TCP is to increase reliability when transporting data in packets. It checks the integrity and sequence of data packets to ensure connection-oriented communication. A packet is resent if it is lost or contains errors.
Together, TCP and IP enable reliable, robust and scalable communication between network devices. TCP/IP serves as the basis for numerous applications and services. These include web browsers, e-mail, file sharing and much more, which could not be implemented without errors without TCP/IP. The TCP/IP model is therefore the basis of modern digital communication and the success of the Internet.
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