Short for authentication, authorization and accounting, a system in IP-based networking to control what computer resources users have access to and to keep track of the activity of users over a network.
Authentication is the process of identifying an individual, usually based on a username and password. Authentication is based on the idea that each individual user will have unique information that sets him or her apart from other users.
Authorization is the process of granting or denying a user access to network resources once the user has been authenticated through the username and password. The amount of information and the amount of services the user has access to depend on the user’s authorization level.
Accounting is the process of keeping track of a user’s activity while accessing the network resources, including the amount of time spent in the network, the services accessed while there and the amount of data transferred during the session. Accounting data is used for trend analysis, capacity planning, billing, auditing and cost allocation.
AAA services often require a server that is dedicated to providing the three services. RADIUS is an example of an AAA service.
Short for Advanced Audio Coding, one of the audio compression formats defined by the MPEG-2 standard. AAC is sometimes referred to as MPEG-2 NBC (not backwards compatible) because it is not compatible with the MPEG-1 coding scheme. AAC boasts higher quality audio reproduction than MP3 and requires 30% less data to do so.
Short for Advanced Authoring Format, a multimedia file format introduced by Microsoft in 1998. The goal of AAF is to provide a common file format that multimedia authoring applications can use so that it’s possible to develop a multimedia presentation in one application and then edit it in a second application. This will allow designers […]
Short for AppleTalk Address Resolution Protocol, a protocol for mapping a device’s physical hardware address to a temporary Appletalk network-assigned address in Macintosh computer LANs. When a protocol stack sends a data packet, the protocol address specifies the destination. The data link layer relies on AARP to translate the protocol address into the hardware address […]
Short for Apple Attachment Unit Interface, A 14-position, 0.050-inch-spaced ribbon contact connector. Except for the pins that supply power, each AAUI signal has the same description, function, and electrical requirements as the AUI (Attachment Unit Interface) signal. The AAUI is the Apple standard used to connect Ethernet transceivers in early Power Macintosh and Quadra computers.
Short for Advanced Business Application Programming it is an object-oriented programming language used to develop applications for the SAP R/3 system, but was originally used for SAP R/2. It was developed by the German company SAP AG.