IT Glossary - ITU Online IT Training
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IT Glossary

Showing terms starting with U (149 terms)

Unstructured Information Management Architecture (UIMA)

A framework and open standard for building, integrating, and deploying unstructured content analysis solutions.

Commonly used in Data Analysis, Big Data

Unsupervised Learning

A type of machine learning algorithm used to draw inferences from datasets consisting of input data without labeled responses.

Commonly used in Artificial Intelligence, Machine Learning

Upcasting

In object-oriented programming, the practice of treating an instance of a subclass as an instance of its superclass.

Commonly used in Programming

Update Rollup

A cumulative set of hotfixes, security updates, critical updates, and updates packaged together for easy deployment to a computer system.

Commonly used in Software Development, Security

Uplink

The connection from a communications device or network to a higher level in a communication chain.

Commonly used in Networking

Uplink Port

A port on a network switch or hub that is used to connect to other switches or networking devices, often used in the context of connecting networks together.

Commonly used in Networking

Uplink Speed

The speed at which data can be sent from a device to the Internet. It is an important factor in internet connectivity, especially for sending large files or streaming video content.

Commonly used in Networking, Internet Services

UPS (Uninterruptible Power Supply)

A device that allows a computer to keep running for at least a short time when the primary power source is lost. It also provides protection from power surges.

Commonly used in Hardware, Security

Upscaling

The process of converting low-resolution video content to a higher resolution. This is commonly used in television and video streaming to improve the viewing experience.

Commonly used in Multimedia, General IT

Upselling

A sales technique where a seller induces the customer to purchase more expensive items, upgrades, or other add-ons in an attempt to make a more profitable sale.

Commonly used in E-commerce

Upstream

In software development, refers to the source of a stream of development work, including bug fixes, new features, and other updates. This can refer to the original or main source of the software itself.

Commonly used in Software Development

Uptime

Uptime refers to the amount of time that a system or service is operational and available for use, typically measured as a percentage of total time. High uptime indicates reliability and availability of a system.

Commonly used in Networking, General IT, System Administration

URI (Uniform Resource Identifier)

A string of characters used to identify a name or a resource on the Internet. It can be classified as a locator, a name, or both.

Commonly used in Networking, General IT

URI Fragment

A part of a URL that follows a # symbol. It refers to a specific part of a webpage, allowing browsers to directly navigate to it without reloading the page.

Commonly used in Web Development

URI Scheme

A top level of the uniform resource identifier (URI) naming structure. All URIs and absolute URI references are formed with a scheme name, followed by a colon character (“:”), and the remainder of the URI called the scheme-specific part.

Commonly used in Networking

URL (Uniform Resource Locator)

A URL is a web address that specifies the location of a resource, such as a webpage, file, or document, on the internet. It consists of a protocol, domain name, and optional path to the resource.

Commonly used in Networking, Web Development, General IT

URL Encoding

A method of encoding information in a Uniform Resource Locator (URL) under certain circumstances. Although it is known as URL encoding, it is, in fact, used more generally within the main Uniform Resource Identifier (URI) set, which includes both Uniform Resource Locator (URL) and Uniform Resource Name (URN).

Commonly used in Web Development

URL Shortening

A technique on the World Wide Web in which a Uniform Resource Locator (URL) may be made substantially shorter and still direct users to the desired page. Useful in messaging platforms where character count is limited.

Commonly used in Web Development

Usability

The ease of use and learnability of a human-made object such as a tool or device.

Commonly used in User Experience (UX)

Usability Heuristics

Established principles for designing user interfaces that ensure a good user experience. Popularized by Jakob Nielsen, these heuristics serve as a guideline for UI design.

Commonly used in UX Design, Software Development

Usability Testing

Usability Testing is the process of evaluating a product or system by testing it with representative users to identify any usability issues and improve user experience.

Commonly used in General IT, UX/UI Design, Software Development

USB (Universal Serial Bus)

USB is a standard interface used for connecting peripheral devices, such as keyboards, mice, printers, and storage devices, to a computer. It allows for easy plug-and-play connectivity and data transfer.

Commonly used in Hardware, General IT, Peripheral Devices

USB-C

USB-C is a type of USB connector that features a reversible design, allowing for easier and more convenient connection of devices without worrying about the orientation of the plug. It supports faster data transfer and higher power delivery.

Commonly used in Hardware, General IT, Peripheral Devices

Usenet

A worldwide distributed discussion system available on computers. It was developed from the general purpose UUCP architecture of the same name.

Commonly used in Networking, General IT

Usenet Newsgroups

A worldwide distributed discussion system available on computers, which predates modern forums and social media, where users read and post messages to one or more categories, known as newsgroups.

Commonly used in Networking, General IT

User Acceptance Criteria (UAC)

The specific criteria identified by stakeholders for a project that must be met for the project deliverables to be accepted.

Commonly used in Project Management, Software Development

User Acceptance Environment

A dedicated testing environment where end-users can validate the functionality and performance of a system or application against their requirements, before it is released into production.

Commonly used in Quality Assurance, Software Development

User Acceptance Testing (UAT)

The phase in software development where the software is tested in the real world by the intended audience.

Commonly used in Quality Assurance, Software Development

User Access Control

User Access Control is the process of managing and restricting user permissions and privileges within a system or application to ensure that users only have access to the resources and data necessary for their roles and responsibilities.

Commonly used in Security, Cybersecurity, General IT

User Authentication

User Authentication is the process of verifying the identity of a user, typically through the use of usernames, passwords, biometric data, or other credentials, before granting access to a system or application.

Commonly used in Security, Cybersecurity, General IT

User Datagram

A basic transfer unit in the Internet Protocol suite, which is a collection of network protocols used on the Internet. UDP allows applications to send messages (datagrams) to other hosts on an IP network without prior communications to set up special transmission channels or data paths.

Commonly used in Networking

User Datagram Protocol (UDP) Lite

A variant of the standard User Datagram Protocol (UDP) that is designed for applications that do not require the full error-checking and correction features of UDP, allowing partial delivery of corrupted packets.

Commonly used in Networking

User Directory

A central repository within a network or system for storing and managing information about users, such as names, passwords, and permissions.

Commonly used in Security, IT Management

User Engagement

The frequency and duration of a user’s interaction with a product, platform, or service. High user engagement is often a key objective in the development of digital products.

Commonly used in General IT, Marketing

User Experience (UX) Design Principles

Fundamental principles that guide the design of user interfaces and user experiences, focusing on usability, accessibility, and desirability.

Commonly used in UX Design, Software Development

User Experience (UX) Metrics

Quantitative measures of a user’s experience with a product or service. These metrics are used to track usability, satisfaction, and performance of the interaction.

Commonly used in UX Design, Software Development

User Experience (UX) Strategy

A long-term plan to align every customer touchpoint with your vision for user experience, aiming to create consistent and positive interactions with your product or service.

Commonly used in UX Design, Business Strategy

User Experience Design (UX)

User experience design (UX) is the process of enhancing user satisfaction by improving the usability, accessibility, and pleasure provided in the interaction between users and products, systems, or services throughout their lifecycle.

Commonly used in User Experience, Design, Human-Computer Interaction

User Experience Design (UXD)

User Experience Design (UXD) is the process of designing products, systems, or services with a focus on optimizing the overall user experience, including usability, accessibility, and satisfaction. It involves research, analysis, prototyping, and testing to create user-centric solutions.

Commonly used in UX/UI Design, Product Development, General IT

User Experience Design (UXD) Process

The process by which designers create products that provide meaningful and relevant experiences to users. This involves the design of the entire process of acquiring and integrating the product, including aspects of branding, design, usability, and function.

Commonly used in UX Design, Software Development

User Experience Prototyping

The process of creating simplified and incomplete models of a product or feature to explore or demonstrate usability, design, and other aspects of user experience.

Commonly used in UX Design, Software Development

User Experience Testing

The process of testing various aspects of user experience to ensure the product meets the desired usability, accessibility, ergonomics, and efficiency required by the user.

Commonly used in UX Design, Software Development

User Feedback Systems

Tools and processes that collect and analyze feedback from users to inform product development, improve user experience, and guide strategic decisions.

Commonly used in UX Design, Product Management

User Flow

A diagram or set of steps that represent the path taken by a user on a website or application to complete a task.

Commonly used in UX Design, Software Development

User Generated Content (UGC)

Any form of content, such as images, videos, text, and audio, that has been posted by users on online platforms such as social media and wikis.

Commonly used in Web Development, Social Media

User Instance

A feature of SQL Server that allows a separate instance of the database engine to be dynamically started for each user, providing a more secure and isolated environment.

Commonly used in Database Management

User Interface (UI)

User interface (UI) refers to the visual elements, controls, and interactive components of software applications or systems through which users interact and communicate with the software, including menus, buttons, forms, and graphical elements.

Commonly used in User Experience, Design, Human-Computer Interaction

User Interface (UI) Design

The process of making interfaces in software with a focus on looks or style. Designers aim to create interfaces which users find easy to use and pleasurable.

Commonly used in UX Design, Software Development

User Interface (UI) Elements

The parts of a software application or website with which a user interacts, including buttons, text fields, sliders, and any visual interface elements.

Commonly used in Software Development, UX Design

User Interface (UI) Frameworks

Collections of pre-written, standardized code arranged in a structure that developers can use to build interfaces more efficiently.

Commonly used in Software Development, Web Development