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This is Layer 4 of the Open
System Interconnection (OSI) reference model. This layer is responsible for
reliable network communication between end nodes. The transport layer provides
mechanisms for the establishment, maintenance, and termination of virtual
circuits, transport fault detection and recovery, and information flow control.
Corresponds to the transmission control layer of the SNA model. See also
application layer, data link layer, network layer, physical layer,
presentation layer, and session layer.
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