IT Glossary - X - ITU Online IT Training
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IT Glossary
Key Terms To Know In The IT Industry

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XMS (Extended Memory Specification)

XMS is a standard for accessing extended memory beyond the 640 KB limit imposed by the original IBM PC architecture. It allows DOS-based applications to utilize additional memory provided by expansion cards or memory managers.

You will find this term commonly used in General IT, Legacy Systems

XNA Framework

A set of tools with a managed runtime environment provided by Microsoft that facilitates video game development and management.

You will find this term commonly used in Game Development, Software Frameworks

XNOR Gate

An XNOR gate is a digital logic gate that performs the logical operation of equality comparison. It produces a high output when both inputs are the same (either both high or both low) and a low output when the inputs are different.

You will find this term commonly used in Electrical Engineering, Digital Logic

XNS (Xerox Network Systems)

A protocol suite developed by Xerox for networking among various devices. It played a key role in the development of Ethernet and other networking standards.

You will find this term commonly used in Networking, Protocol Design

XOR Cipher

A simple encryption algorithm that uses the XOR (exclusive or) operation, often used for its simplicity in certain contexts.

You will find this term commonly used in Security, Cryptography

XOR Network

A type of neural network that is specifically designed to solve the XOR problem, demonstrating non-linear classification.

You will find this term commonly used in AI, Machine Learning

XOT (X.25 over TCP)

A protocol for encapsulating X.25 packets over TCP/IP networks, enabling legacy X.25 applications to use modern IP networks.

You will find this term commonly used in Networking, Legacy Systems Integration

XP (Extreme Programming)

A software development methodology which is intended to improve software quality and responsiveness to changing customer requirements.

You will find this term commonly used in Software Development, Agile Methodologies

XPath

XPath is a query language used for navigating and selecting elements or nodes in XML documents, enabling the extraction of specific data or information based on location paths or patterns within the document structure.

You will find this term commonly used in Data Extraction, XML, Query Language

XPath (XML Path Language)

XPath is a query language used to navigate and select nodes in XML documents. It provides a syntax for specifying patterns to match elements and attributes within an XML structure.

You will find this term commonly used in Web Development, Data Analysis

XPe (Windows XP Embedded)

A componentized version of the Microsoft Windows XP operating system designed to allow developers to selectively include or exclude features.

You will find this term commonly used in Operating Systems, Embedded Systems

XPL (eXtensible Programming Language)

A programming language designed for easy data manipulation and transformation, especially useful in XML data processing.

You will find this term commonly used in Software Development, Data Processing

XPointer (XML Pointer Language)

A system for addressing components within XML documents, working alongside XPath to allow more complex document referencing.

You will find this term commonly used in Web Development, XML Technologies

XQuery

XQuery is a programming language designed for querying and extracting data from XML documents. It allows users to manipulate and transform XML data using a declarative syntax similar to SQL.

You will find this term commonly used in Database Management, Data Analysis

XQuery Full-Text

XQuery Full-Text is an extension to the XQuery language that adds support for full-text search capabilities. It allows users to perform complex queries on XML documents based on the content of text nodes, enabling advanced search and retrieval operations.

You will find this term commonly used in Database Management, Data Analysis

XQuery Update Facility

XQuery Update Facility is an extension to the XQuery language that provides mechanisms for modifying and updating XML documents. It allows users to insert, delete, and modify nodes within an XML document using a declarative syntax similar to XQuery.

You will find this term commonly used in Database Management, Data Manipulation

XR (Extended Reality)

A term referring to all real-and-virtual combined environments and human-machine interactions generated by computer technology and wearables, including augmented reality (AR), virtual reality (VR), and mixed reality (MR).

You will find this term commonly used in Virtual/Augmented Reality, User Experience

XRD (eXtensible Resource Descriptor)

A standard way to describe and discover resources on the web and to make these descriptions extensible and reusable.

You will find this term commonly used in Web Development, Resource Discovery

XSalsa20

A variant of the Salsa20 stream cipher with an extended nonce size for better security without sacrificing performance.

You will find this term commonly used in Security, Cryptography

XSD (XML Schema Definition)

XSD is a language for specifying the structure and content of XML documents using a schema-based approach. It allows developers to define data types, elements, and constraints for validating and interpreting XML data according to predefined rules.

You will find this term commonly used in Web Development, Data Validation

XSL (eXtensible Stylesheet Language)

A language for expressing stylesheets that control the presentation of XML documents, used to transform XML data into other formats such as HTML or PDF.

You will find this term commonly used in General IT, Web Development

XSLT (eXtensible Stylesheet Language Transformations)

XSLT is a language for transforming XML documents into other formats, such as HTML, plain text, or XML itself. It enables the separation of content and presentation by applying stylesheets to XML data.

You will find this term commonly used in Web Development, Content Management

XSS (Cross-Site Scripting)

XSS is a type of security vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users. It can be used to steal sensitive information, hijack user sessions, or deface websites.

You will find this term commonly used in Cybersecurity, Web Development, Security

XSS (Cross-Site Scripting) Filter

A security mechanism that detects and prevents cross-site scripting (XSS) attacks by sanitizing input and output data in web applications.

You will find this term commonly used in Cybersecurity, Web Development

XSS Filter

A security feature implemented in web browsers to mitigate the risk of cross-site scripting attacks.

You will find this term commonly used in Cybersecurity

XTS (XEX-based Tweaked-codebook mode with ciphertext Stealing)

A mode of operation for block ciphers designed to provide strong security for disk encryption.

You will find this term commonly used in Security, Data Encryption

XUL (XML User Interface Language)

A markup language for creating rich, graphical user interfaces that are portable across different types of devices and operating systems.

You will find this term commonly used in Software Development, UI Design

XULRunner

A runtime environment developed by Mozilla that allows developers to deploy XUL-based desktop applications.

You will find this term commonly used in Software Development, Application Frameworks

XVideo Extension

An extension of the X Window System that enables video playback in X applications with less CPU usage by offloading processing to the GPU.

You will find this term commonly used in General IT, Multimedia Processing

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