Application protocol data unit

application protocol data unit

(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.


Read Also:

  • Application server

    application server 1. A designer’s or developer’s suite of software that helps programmers isolate the business logic in their programs from the platform-related code. Application servers can handle all of the application logic and connectivity found in client-server applications. Many application servers also offer features such as transaction management, clustering and failover, and load balancing; […]

  • Application service provider

    American selling price. Computers. application service provider: a company that gives individuals or businesses access through the Internet to specialized software applications and other computer-related services. noun the venomous snake, probably Naja haje (Egyptian cobra), that caused the death of Cleopatra and was formerly used by the Pharaohs as a symbol of their power over […]

  • Application software

    the act of putting to a special use or purpose: the application of common sense to a problem. the special use or purpose to which something is put: a technology having numerous applications never thought of by its inventors. the quality of being usable for a particular purpose or in a special way; relevance: This […]

  • Virtual machine

    Also called system virtual machine. a self-contained operating environment that behaves as if it is a separate computer, with no access to the host operating system: When an application runs in a virtual machine, there is little chance that it will damage files or applications in the host system. Also called process virtual machine, application […]

Disclaimer: Application protocol data unit definition / meaning should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational purposes only.