CITS3002 Computer Networks  
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The ISO/OSI Reference Model, continued

4. The Transport Layer

provides a reliable end-to-end service independent of the network topology. This is achieved by splitting messages into network sized packets and joining them back together again at the other end.

The transport layer often supports multiplexing to optimize network cost (several transport connections mapped into a single network connection) or splitting to enhance services (single transport to multiple connections).


CITS3002 Computer Networks, Lecture 1, Introduction to Computer Networks, p15, 28th February 2024.