Transport Layer Protocols in Computer Network
The OSI model consists of seven protocol layers and each layer performs a supportive communication task.
The Transport layer is the fourth layer in the OSI model, which provides communication services between the computers connected in the network.
The transport layer provides an error checking service during the transmission of data packets from source computer to destination computer.
- The data link layer helps to deliver the frames between two neighboring nodes over a link. This process is called as node-to-node delivery.
- The network layer helps to deliver the datagrams between two hosts. This process is called as host-to-host delivery.
- Several processes are carried out on the source host and destination host. Some mechanism is needed to complete the delivery process between the source host and destination host.
- The transport layer helps to carry out the process-to-process delivery i.e. the delivery of a packet or part of message from one process to another process.