The transport layer is responsible for ensuring accurate end-to-end communication in an open system interconnection (OSI) computer network model. This layer is also accountable for handling data error correction and allows for effective multiplexing.
The transport layer, as the fourth layer of the OSI structure, allows for the precise transmission and receipt of data. When sending, this layer breaks down application messages into smaller segments to be moved along to the network layer. When receiving, it reconstructs the segments to create messages that are sent on to the application layer. The transport layer is essential in the efficiency of processes such as traffic control and byte orientation.