Definition X.500 is an international standard for electronic directory services. It’s designed for supporting management and routing in distributed computing environments. It provides a consistent and system-independent method of creating


Definition X.400 is a suite of protocols defining standards for email exchange among networks. Developed by the International Telecommunication Union Telecommunication Standardization Sector (ITU-T), it’s part of the X.4000 series


Definition X.25 is a protocol suite for packet-switched wide area network services. It was designed in the 1970s by the International Telegraph and Telephone Consultative Committee (CCITT) to establish connections

XML Data Island

Definition XML Data Island is a technology term referring to XML documents embedded within HTML pages. These islands enable Web pages to work with XML data that is stored directly

XML Schema

Definition XML Schema, also known as XSD (XML Schema Definition), is a structure used to describe and validate the elements and attributes of an XML document. It functions as a

Xerox Network Systems

Definition Xerox Network Systems (XNS) is a computer networking protocol developed by Xerox Corporation in the late 1970s. It was used to connect computers, printers, and servers in a Local


Definition XMODEM is a simple file transfer protocol developed as a quick and easy downloading method for use with modems. It sends blocks of data, typically 128 bytes, along with

X.Org Foundation

Definition The X.Org Foundation is a non-profit organization that oversees the development of the X Window System, a crucial component in Unix and Unix-like operating systems that facilitates the building

X Terminal

Definition An X Terminal, in the realm of technology, refers to a dedicated desktop device that provides an interface to X Window Systems for managing windows in a graphical user