AAA Server:
An AAA server is a server program that handles user requests for access to computer resources and, for an enterprise, provides authentication, authorization, and accounting (AAA) services.
Absolute value:
Absolute value is a term used in mathematics to indicate the distance of a point or number from the origin (zero point) of a number line or coordinate system.
Account
An account is an often used term to describe what rights a user has on a network or system such as an Internet Service provider (ISP). This will usually detail what "privileges" the user has.

Active Network: is a network in which the nodes are programmed to perform custom operations on the messages that pass through the node

AGP: Stands for "Accelerated Graphics Port." AGP is a type of expansion slot designed specifically for graphics cards. It was developed in 1996 as an alternative to the PCI standard. Since the AGP interface provides a dedicated bus for graphics data, AGP cards are able to render graphics faster than comparable PCI graphics cards.

ACL:
Stands for "Access Control List." An ACL is a list of user permissions for a file, folder, or other object. It defines what users and groups can access the object and what operations they can perform. These operations typically include read,write, and execute. For example, if an ACL specifies read-only access for a specific user of a file, that user will be able open the file, but cannot write to it or run the file.

Ajax:
Ajax is a combination of Web development technologies used for creatingdynamic websites. While the term "Ajax" is not written in all caps like most tech acronyms, the letters stand for "Asynchronous JavaScript And XML." Therefore, websites that use Ajax combineJavaScriptandXMLto display dynamic content.
The "asynchronous" part of Ajax refers to the way requests are made to the Web server. When a scriptsends a request to the Web server, it may receive data, which can then be displayed on the Web page. Since these events happen at slightly different times, they are considered to be asynchronous. Most Ajax implementations use the XMLHttpRequest API, which includes a list of server requests that can be called within JavaScript code. The data is usually sent back to the browser in an XML format, since it is easy to parse. However, it is possible for the server to send data as unformatted plain text as well.
What makes Ajax so powerful is that scripts can run on the client side, rather than on the server. This means a JavaScript function can make a request to a server after a webpage has already finished loading. The data received from the server can then be displayed on the page without reloading the other content. If a server-side scripting language like PHP or ASP was used, the entire page would need to be reloaded in order for the new content to be displayed.
Alpha Software: Alpha software is computer software that is still in the early testing phase. It is functional enough to be used, but is unpolished and often lacks many of the features that will be included in the final version of the program. The "alpha phase" of software development follows the early programming and design stages, but precedes the "beta phase" in which the software closely resembles the final version.

Antialiasing:
Anti-aliasing refers to a number of techniques to combat the problems of aliasing in a sampled signal such as a digital image or digital audio recording. Specifically, it may refer to:


APU:
An APU is a processor that includes both the CPU and GPUon a single chip. The name “APU” was coined by AMD, which released the first APU in January, 2011.

For many years, CPUs handled all non-graphics calculations, while GPUs were only used for graphics operations. As GPU performance increased, hardware manufacturers andsoftware programmers realized GPUs had a lot of unused potential. Therefore, they began to find ways to offload certain system calculations to the GPU. This strategy, called “parallel processing,” enables the GPU to perform calculations alongside the CPU, improving overall performance.

The APU takes parallel computing one step further by removing the bus between the CPU and GPU and integrating both units on the same chip. Since the bus is the main bottleneck in parallel processing, an APU is more efficient than a separate CPU and GPU. While this strategy may not make sense for desktop computerswith dedicated video cards, it can provide significant performance gains for laptops and other mobile devices that have integrated graphics chips.
App:App is short for "
application
," which is the same thing as a software program. While an app may refer to a
program
for any hardware
platform
, it is most often used to describe programs for mobile devices, such as
smartphones
and
tablets
.

AUP:
Stands for "Acceptable Use Policy." An AUP is list of rules you must follow in order to use a website orInternet service. It is similar to a software license agreement (SLA), but is used specifically for Internet services. Most well-known, high traffic websites include an AUP, which may also be called Terms of Service (TOS) or Terms of Use (TOU). You can often find a link to the to the website's AUP in the footer of the home page. Many web services, such as cloud applications require you to agree to an AUP in order to use the online service. ISPs often provide an AUP with each account, which states specific guidelines you must follow.The specifics of an AUP vary depending on the service offered. Even website AUPs may differ greatly based on the purpose of the website and the website's content. However, most AUPs include a list of general dos and don'ts while using the service, such as the following: An AUP serves as an agreement between the user and the company offering the online service. Some rules are basic netiquette, while others may have legal ramifications. If you fail to comply with a policy in a AUP, the company has the right to suspend or terminate your account or take legal action if necessary. Therefore, it is wise to familiarize yourself with the AUPs of the Internet services you use.