Computer Networking
Computer Terminology
Cisco

How does the transport layer tell the difference between different data segments?

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Wiki User
January 28, 2012 10:54PM

In order to tell the difference between different data segments the transport layer assigns an identifier to an application. The TCP/IP protocols call this identifier a port number. Each software process that needs to access the network is assigned a port number unique to that host. This port number is used in the transport layer header to indicate to which application that piece of data is associated.

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