Application Protocol Data Unit


Also found in: Wikipedia.

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 ?
About smartSD Technology smartSD memory cards leverage the world-leading SD architecture and Advanced Security SD (ASSD) standard, allowing transfer ISO 7816 Application Protocol Data Unit commands to, for example, JavaCard(TM) applets and responses through the SD bus.
smartSD Technology Summary smartSD memory cards leverage the world-leading SD architecture and Advanced Security SD (ASSD) standard, allowing transfer ISO 7816 Application Protocol Data Unit commands to for example JavaCard (TM) applets and responses through the SD bus.
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.

Full browser ?