Which layer of the TCP/IP model corresponds to the OSI model's Transport Layer?

The Transport Layer in the TCP/IP model is directly analogous to the Transport Layer in the OSI model. This layer is responsible for providing end-to-end communication services for applications. It manages the delivery of data segments between hosts and handles flow control, error detection, and recovery, ensuring reliable data transfer.

This correspondence between the two models is essential for understanding how data is transmitted across networks. In both models, the Transport Layer enables the multiplexing of communication sessions, ensuring that data from multiple applications can be sent simultaneously over the network without interference.

Other layers in the TCP/IP model serve different purposes. The Application Layer deals with high-level protocols that applications use to communicate, the Internetwork Layer corresponds to the OSI's Network Layer and handles routing and forwarding of packets, while the Network Interface Layer deals with the physical transmission of data over network interfaces, aligning with the OSI's Data Link and Physical Layers. This distinction allows for a clearer understanding of how different functions are organized within network architecture.