TCP/IP is a widely used protocol suite for Internet communication from "summary" of Data Communications and Networking by Behrouz A. Forouzan
TCP/IP is a widely used protocol suite for Internet communication. This suite consists of a set of protocols that govern the exchange of data between devices on the Internet. It is based on a client-server model, where clients request data from servers, which then respond to these requests. The simplicity of TCP/IP lies in its design, which is based on a layered architecture. This architecture consists of four layers: the application layer, the transport layer, the network layer, and the link layer. Each layer performs specific functions that contribute to the overall communication process. At the application layer, protocols such as HTTP, FTP, and SMTP are used to enable communication between applications running on different devices. These protocols define how data is formatted, transmitted, and received between applications. The transport layer, which includes protocols like TCP and UDP, is responsible for ensuring reliable data delivery between devices. The network layer, which uses the IP protoco...
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