TABLE OF CONTENTS Level: 2
Definition: Sometimes referred to as the Linux of instant messaging, Jabber is an open-source platform for developing instant messaging applications. Jabber provides a set of streaming XML protocols and technologies that make it possible for any two entities on the Internet to exchange messages, presence (identifying who is online and where), and other useful information in almost real time. According to the Jabber Software Foundation, the architecture of a Jabber network is similar to e-mail, making it relatively easy for individuals to develop their own instant messaging applications and install and run their own Jabber servers. Jabber also offers the ability to isolate its servers from the public Jabber network, making it possible to develop a closed, more secure instant messaging environment. The Jabber Software Foundation oversees the maintenance of common extensions to ensure interoperability. (See also ICQ and Instant Messaging.)
Level: 1
Definition: In electronics equipment, a jack usually refers to a female receptacle that will accept a compatible male connector or plug. (See also PSTN.)
Level: 2
Definition: Refers to a platform-independent programming language developed by Sun Microsystems in the early 1990s. Java is an object-oriented, secure, robust, general-purpose programming language that can be used on different operating systems. The language supports programming for the Internet in the form of applets and is used in developing small, specialized computing appliances. The Java approach directly challenges the idea that software must be installed and remain resident on a computer to...
