Application Protocol Data Unit

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.
References in periodicals archive ?
The CodeWarrior toolset also allows developers to debug individual Application Protocol Data Unit (APDU) communications packets, providing the ability to pinpoint exactly where problems are occurring.

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