Layer 4 - Transport Layer
The transport layer manages the end-to-end control and error checking between the two points. Further, it provides recovery, flow control and creating and releasing connections created with virtual circuits.
The transport layer makes sure that data sent from one point to another gets there without the bits getting scrambled. Depending on the type of transport-level conversation, it may (or may not!) ensure that all messages sent from point A to point B really do arrive at point B, just that any message that does arrive at point B is the message that A intended to send.
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Version 1.0 - Version Date: November 7, 2004
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