Application Protocol Data Unit

<networking>

(APDU) A packet of data exchanged between two application programs across a network. This is the highest level view of communication in the OSI seven layer model and a single packet exchanged at this level may actually be transmitted as several packets at a lower layer as well as having extra information (headers) added for routing etc.

Last updated: 1995-12-19

Nearby terms:

Application Protocol Data UnitApplications Development Manager

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