Acronym
 's
X.25 - a specification from the Consultative
Committee on International Telephone and Telegraph on layered protocols
connecting computer terminals to a public, packet-switched network
xDSL - designation for digital subscriber
line technology enabling simultaneous two-way transmission of voice
and high-speed data over ordinary copper phone lines
XML - Extensible Markup Language - a
document format for the Web that is more flexible than HTML because
it allows tags to be defined by the developer of the page. This
means that tags for virtually any data items can be used for specific
applications, allowing Web pages to function like database records
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