Browse Definitions :

Browse Definitions by Alphabet

H.2 - HEW

  • H.245 - H.245 is a protocol for the transmission of call management and control signals in packet-based networks using H.
  • HA storage (high-availability storage) - High-availability storage (HA storage) is a storage system that is continuously operational or provides at least 99% uptime.
  • hackathon - A hackathon, also known as a codefest, is a social coding event that brings computer programmers and other interested people together to improve upon or build a new software program.
  • hacker - A hacker is an individual who uses computer, networking or other skills to overcome a technical problem.
  • hacking as a service (HaaS) - Hacking as a service (HaaS) is the commercialization of hacking skills, in which the hacker serves as a contractor.
  • hacktivism - Hacktivism is the act of misusing a computer system or network for a socially or politically motivated reason.
  • Hadoop - Hadoop is an open source distributed processing framework that manages data processing and storage for big data applications running in clustered systems.
  • Hadoop 2 - Apache Hadoop 2 is the second iteration of the Hadoop framework for distributed data processing.
  • Hadoop as a service (HaaS) - Hadoop as a service (HaaS), also known as Hadoop in the cloud, is a big data analytics framework that stores and analyzes data in the cloud using Hadoop.
  • Hadoop cluster - A Hadoop cluster is a special type of computational cluster designed specifically for storing and analyzing huge amounts of unstructured data in a distributed computing environment.
  • Hadoop data lake - A Hadoop data lake is a data management platform comprising one or more Hadoop clusters.
  • Hadoop Distributed File System (HDFS) - The Hadoop Distributed File System (HDFS) is the primary data storage system used by Hadoop applications.
  • hairpinning - In general telecommunication, hairpinning is returning a message from an origin endpoint back in the direction it came from as a way to get it to its destination endpoint.
  • half-duplex - Half-duplex data transmission means that data can be transmitted in both directions on a signal carrier, but not at the same time.
  • Hall effect - The Hall effect is the movement of charge carriers through a conductor towards a magnetic attraction.
  • halo effect - The halo effect is a form of cognitive bias which causes one part to make the whole seem more attractive or desirable.
  • Halogen Software Inc. - Halogen Software Inc.
  • hamburger icon (slide drawer navigation) - The hamburger icon got its name because it resembles a burger in a bun.
  • Hamming code - Hamming code is a set of error-correction codes that can be used to detect and correct bit errors that can occur when computer data is moved or stored.
  • handheld - A handheld computer is a computer that can conveniently be stored in a pocket (of sufficient size) and used while you're holding it.
  • hands-off infrastructure management - Hands-off infrastructure management is the remote, automated administration of server, storage and network resources.
  • Handspring - Handspring was a company that manufactured portable computer/organizer hardware.
  • handtop (ultra personal computer) - A handtop is a full-featured portable computer that is slightly larger than a PDA, but much smaller than a laptop.
  • hangup (or hang) - A hangup, also called a hang, is a condition that sometimes occurs when computer programs conflict or do not run properly.
  • happy path testing - Happy-path testing is a type of software testing that uses known input and produces an expected output.
  • HAProxy - HAProxy (High Availability Proxy), developed by HAProxy Technologies LLC, is an open source load balancer proxy for TCP and HTTP applications.
  • haptics - Haptics (pronounced HAP-tiks) is the science of applying touch (tactile) sensation and control to interaction with computer applications.
  • hard bounce - A hard bounce is an e-mail message that has been returned to the sender because the recipient's address is invalid.
  • hard copy (printout) - A hard copy (or "hardcopy") is a printed copy of information from a computer.
  • hard disk drive (HDD) - A computer hard disk drive (HDD) is a non-volatile data storage device.
  • hard drive shredder - A hard drive shredder is a mechanical device that physically destroys old hard drives in such a way that the data they contain cannot be recovered.
  • hard error - A hard error is an issue in RAM that results from a permanent physical flaw in the module caused by a hardware failure or defect.
  • hard real-time system (immediate real-time system) - A hard real-time system (also known as an immediate real-time system) is hardware or software that must operate within the confines of a stringent deadline.
  • hard reset (factory reset; master reset) - A hard reset, also known as a factory reset or master reset, is the restoration of a device, such as a smartphone or tablet, to its state when it left the factory.
  • hard skills - Hard skills are specific abilities, or capabilities, that an individual can possess and demonstrate in a measured way.
  • hard zoning - Hard zoning is used to allocate resources and control access in a storage-area network (SAN).
  • hard-drive encryption - Hard-drive encryption is a technology that encrypts the data stored on a hard drive using sophisticated mathematical functions.
  • hardcode - In computer programming or text markup, to hardcode (less frequently, hard code) is to use an explicit rather than a symbolic name for something that is likely to change at a later time.
  • hardware abstraction layer (HAL) - In computers, a hardware abstraction layer (HAL) is a layer of programming that allows a computer operating system to interact with a hardware device at a general or abstract level rather than at a detailed hardware level.
  • Hardware as a Service (HaaS) - Hardware as a Service (HaaS) is a service provision model for hardware that is defined differently in managed services and grid computing contexts.
  • hardware clustering - Hardware clustering is a hardware-based method of turning multiple servers into a cluster (a group of servers that acts like a single system).
  • hardware emulation - Hardware emulation is the use of one hardware device to mimic the function of another hardware device.
  • hardware RAID (hardware redundant array of independent disk) - Hardware RAID is a form of RAID where processing is done externally.
  • hardware security - Hardware security is vulnerability protection that comes in the form of a physical device rather than software that is installed on the hardware of a computer system.
  • hardware security module (HSM) - A hardware security module (HSM) is a physical device that provides extra security for sensitive data.
  • hardware virtualization - Hardware virtualization, which is also known as server virtualization or simply virtualization, is the abstraction of computing resources from the software that uses those resources.
  • hardware vulnerability - A hardware vulnerability is an exploitable weakness in a computer system that enables attack through remote or physical access to system hardware.
  • hardware-as-a-service (in managed services) - Hardware-as-a-service (HaaS) is a procurement model that is similar to leasing or licensing in which hardware that belongs to a managed service provider (MSP) is installed at a customer's site and a service level agreement (SLA) defines the responsibilities of both parties.
  • hardware-assisted virtualization - Hardware-assisted virtualization is the use of a computer's physical components to support the software that creates and manages virtual machines (VMs).
  • harmonic - A harmonic is a wave or signal whose frequency is an integral (whole number) multiple of the frequency of the same reference signal or wave.
  • Hartree energy - The Hartree energy is a physical constant equal to twice the binding energy of the electron in the ground state (the lowest-energy state) of the hydrogen atom.
  • Hash-based Message Authentication Code (HMAC) - Hash-based Message Authentication Code (HMAC) is a message authentication code that uses a cryptographic key in conjunction with a hash function.
  • HashiCorp - HashiCorp is a software company that provides a suite of modular DevOps infrastructure provisioning and management products.
  • hashing - Hashing is the process of transforming any given key or a string of characters into another value.
  • Haswell - Haswell is the code name for Intel's 4th generation Core i-based processors.
  • hate speech - Hate speech is a verbal or written communication expressing a generalized negative opinion about a particular demographic, sometimes attacking an individual as a member of that group.
  • Have I Been Pwned (HIBP) - Have I Been Pwned (HIBP) is a website that allows users to search and find out if an email address’s password has been compromised.
  • Hawthorne effect - The Hawthorne effect is the modification of behavior by study participants in response to their knowledge that they are being observed or singled out for special treatment.
  • HC3 (HyperCore 3) - HC3 (HyperCore 3) is a hyper-converged appliance from Scale Computing.
  • HCI (human-computer interaction) - HCI (human-computer interaction) is the study of how people interact with computers and to what extent computers are or are not developed for successful interaction with human beings.
  • HD-DVD (high-definition DVD) - HD-DVD (high-definition DVD) is a defunct high-capacity optical storage medium that was once seen as the successor to the DVD.
  • HDD form factor (hard disk drive form factor) - HDD form factor is the size or geometry of a hard disk drive, determining the device’s compatibility with the drive bays in a storage array or enclosure, server, portable computer or other computing device.
  • HDLC (High-level Data Link Control) - HDLC (High-level Data Link Control) is a group of protocols or rules for transmitting data between network points (sometimes called nodes).
  • HDMI - HDMI (High Definition Multimedia Interface) is a specification that combines video and audio into a single digital interface for use with digital versatile disc (DVD) players, digital television (DTV) players, set-top boxes, and other audiovisual devices.
  • HDTV (high definition television) - HDTV (high definition television) is a television display technology that provides picture quality similar to 35 mm.
  • HDX - Citrix HDX technology is a set of capabilities that work together to deliver a high-definition user experience of virtual desktops and applications to any device over any network from the data center.
  • head tracking - Head tracking is a software application that monitors a user’s head position and orientation.
  • header - In information technology, a header is, in general, something that goes in front of something else and is usually repeated as a standard part of the units of something else.
  • headless Android - Headless Android is a version of the Android operating system designed for embedded devices that lack user interfaces.
  • headless CMS (headless content management system) - A headless content management system (CMS) delivers back-end capabilities for editing, organizing and storing all types of digital information, without regard to how that content is published, displayed or used.
  • headless commerce (headless e-commerce) - Headless commerce, also called headless e-commerce, is a platform architecture that decouples the front end of an e-commerce website with the back end.
  • headless server - A headless server is a computing device without a local interface that is dedicated to providing services to other computers and their users.
  • headless system - A headless system is a computer that operates without a monitor, graphical user interface (GUI) or the typical peripherals used to control it, such as a keyboard and mouse.
  • heads-up display (HUD) - A heads-up display (HUD) is a transparent or miniaturized display technology that does not require users to shift their gaze from where they are naturally looking.
  • health apps - Health apps are application programs that offer health-related services for smartphones and tablet PCs.
  • health care cloud - A health care cloud is a cloud computing service used by health care providers for storing, maintaining and backing up personal heath information (PHI).
  • health informatics - Health informatics is the practice of acquiring, studying and managing health data and applying medical concepts in conjunction with health information technology systems to help clinicians provide better healthcare.
  • Health Information Exchange (HIE) - Health information exchange (HIE) is the electronic transmission of healthcare-related data among medical facilities, health information organizations -- companies that oversee and govern the exchange of this data -- and government agencies according to national standards.
  • Health IT (health information technology) - Health IT (health information technology) is the area of IT involving the design, development, creation, use and maintenance of information systems for the healthcare industry.
  • Healthcare CIO (healthcare chief information officer) - A healthcare CIO is a healthcare executive with an influence over technology purchasing and other IT business decisions.
  • Heap - Heap is a user analytics tool which can be utilized to capture all web, mobile and cloud-based user interactions in an application.
  • heap - In certain programming languages including C and Pascal, a heap is an area of pre-reserved computer main storage (memory) that a program process can use to store data in some variable amount that won't be known until the program is running.
  • Heartbeat - Heartbeat is a program that runs specialized scripts automatically whenever a system is initialized or rebooted.
  • Heartbleed - Heartbleed is a vulnerability in some implementations of OpenSSL.
  • heat - Heat is the transfer of kinetic energy from one medium or object to another, or from an energy source to a medium or object.
  • heat bed - A heat bed is an additional module for a 3D printer that makes the cooling process of 3D printed materials more controlled, for better results.
  • heat map (heatmap) - A heat map is a two-dimensional representation of data in which values are represented by colors.
  • heat pump - A heat pump is a device that takes heat from one source and moves it to another location through electric or mechanical means.
  • helium hard drive - A helium drive is a hard disk that exploits the characteristic lightness of that gas to increase the medium’s potential speed and storage density.
  • HELLO packet - A HELLO packet is a special data packet (message) that is sent out periodically from a router to establish and confirm network adjacency relationships to other routers in the Open Shortest Path First (OSPF) communications protocol.
  • Hello World - Hello World is a simple program that, when run, displays the message: Hello World.
  • help desk - A help desk is the individual, group, organizational function or external service that an IT user calls to get help with a problem.
  • help system (help file) - A help system (sometimes called a help file) is a documentation component of a software program that explains the features of the program and helps the user understand its capabilities.
  • henry (H) - The henry (symbolized H) is the Standard International (SI) unit of inductance.
  • henry per meter (H/m) - The henry per meter (symbolized H/m) is the unit of magnetic permeability in the International System of Units (SI).
  • Heroku - Heroku is a cloud-based development platform as a service (PaaS) provider.
  • hertz - Hertz is a unit of frequency (of change in state or cycle in a sound wave, alternating current, or other cyclical waveform) of one cycle per second.
  • heuristic - As an adjective, heuristic (pronounced hyu-RIS-tik and from the Greek "heuriskein" meaning "to discover") pertains to the process of gaining knowledge or some desired result by intelligent guesswork rather than by following some preestablished formula.
  • Hewlett Packard Enterprise (HP Enterprise, HPE) - Hewlett Packard Enterprise (HP Enterprise, also known as HPE) is an American multinational company that specializes in business IT (information technology).
  • Hewlett-Packard (HP) - HP (Hewlett-Packard) is a prominent IT company based in Palo Alto, California.
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    A SYN flood attack is a type of denial-of-service (DoS) attack on a computer server.

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