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

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Nearby terms:

application program « Application Program Interface « Application Programming Interface « Application Protocol Data Unit » Applications Development Manager » application server » Application Service Element

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