Browse Definitions :

Browse Definitions by Alphabet

R - REC

  • R programming language - The R programming language is an open source scripting language for predictive analytics and data visualization.
  • R/3 - R/3 is the comprehensive set of integrated business applications from SAP, the German company that states it is the market and technology leader in business application software.
  • rabbit hole - A rabbit hole, in a metaphorical sense, is a long and winding exploratory path with many connections and offshoots.
  • race condition - A race condition is an undesirable situation that occurs when a device or system attempts to perform two or more operations at the same time, but because of the nature of the device or system, the operations must be done in the proper sequence to be done correctly.
  • raceway - A raceway is an enclosed conduit that forms a physical pathway for electrical wiring and protect wires and cables from heat, corrosion, water intrusion and other environmental threats.
  • rack - A rack, in an IT (information technology) context, is a supporting framework that holds hardware modules.
  • rack server (rack-mounted server) - A rack server, also called a rack-mounted server, is a computer dedicated to use as a server and designed to be installed in a framework called a rack.
  • rack unit - A rack unit (abbreviated as U, less commonly seen as RU) is a unit of measurement (1.
  • rack-scale flash - Rack-scale flash is flash-only storage that uses a high-speed interface to connect the storage more directly to the CPU than with a traditional storage array.
  • Rackspace Cloud - Cloud provider Rackspace offers several different cloud storage services including Cloud Files, Cloud Block Storage and Cloud Backup.
  • Rackspace Fanatical Support - Rackspace Fanatical Support is Rackspace's customer service program, which provides support for customers using its managed hosting services and cloud platforms.
  • radian - The radian is the Standard International (SI) unit of plane angular measure.
  • radian per second (rad/s or rad/sec) - The radian per second (symbolized rad/s or rad/sec) is the Standard International (SI) unit of angular (rotational) speed.
  • radian per second squared - The radian per second squared is the unit of angular (rotational) acceleration magnitude in the International System of Units (SI).
  • radiant energy - Radiant energy is, simply, energy that radiates from a source of electromagnetic radiation, such as the light and heat radiating from the sun.
  • radical candor - Radical candor is a management technique that focuses on challenging employees directly while also caring for each person on a personal level.
  • radical innovation - Radical innovation refers to an invention that represents something new to the world.
  • radio access network (RAN) - A radio access network (RAN) is a major component of a wireless telecommunications system that connects individual devices to other parts of a network through a radio link.
  • radio charging - Radio charging is a wireless charging method used to charge items with small batteries and low power requirements, such as watches, hearing aids and wireless keyboards and mice.
  • radio frequency (RF, rf) - Radio frequency (RF) is a measurement representing the oscillation rate of electromagnetic radiation spectrum, or electromagnetic radio waves, from frequencies ranging from 300 GHz to as low as 9 kHz.
  • radio silence - Radio silence is a mandatory or voluntary cessation of transmission for the duration of some sensitive time period.
  • Radiology Information System (RIS) - A RIS is the traditional core software system for electronically managing medical images, scheduling and billing in hospital radiology departments and physician practices.
  • RADIUS (Remote Authentication Dial-In User Service) - RADIUS (Remote Authentication Dial-In User Service) is a client-server protocol and software that enables remote access servers to communicate with a central server to authenticate dial-in users and authorize their access to the requested system or service.
  • RADOS (Reliable Autonomic Distributed Object Store) - Reliable Autonomic Distributed Object Store (RADOS) is an object storage service with the ability to scale to thousands of hardware devices by making use of management software that runs on each of the individual nodes.
  • RADOS Block Device (RBD) - A RADOS Block Device (RBD) is software that facilitates the storage of block-based data in the open source Ceph distributed storage system.
  • RAID (redundant array of independent disks) - RAID (redundant array of independent disks) is a way of storing the same data in different places on multiple hard disks or solid-state drives (SSDs) to protect data in the case of a drive failure.
  • RAID 0 (disk striping) - RAID 0 (disk striping) is the process of dividing a body of data into blocks and spreading the data blocks across multiple storage devices, such as hard disks or solid-state drives (SSDs), in a redundant array of independent disks (RAID) group.
  • RAID 10 (RAID 1+0) - RAID 10, also known as RAID 1+0, is a RAID configuration that combines disk mirroring and disk striping to protect data.
  • RAID 2 - RAID 2 is a technique that stripes data at the bit level using a Hamming code to detect errors.
  • RAID 3 (redundant array of independent disks) - RAID 3 is a RAID configuration that uses striping and parity, but it uses a parity disk to store the parity information generated by a RAID controller instead of striping it with the data.
  • RAID 4 (redundant array of independent disks) - RAID 4 is a RAID configuration that uses a dedicated parity disk and block-level striping across multiple disks.
  • RAID 5 - RAID 5 is a redundant array of independent disks configuration that uses disk striping with parity.
  • RAID 50 (RAID 5+0) - RAID 50, also known as RAID 5+0, combines distributed parity (RAID 5) with striping (RAID 0).
  • RAID 6 - RAID 6, also known as double-parity RAID, uses two parity stripes on each disk.
  • RAID 7 (redundant array of independent disks) - RAID 7 is a trademarked RAID level owned by the now defunct Storage Computer Corp.
  • RAID controller - A RAID controller is a hardware device or software program used to manage hard disk drives (HDDs) or solid-state drives (SSDs) in a computer or storage array so they work as a logical unit.
  • RAID rebuild - A RAID rebuild is the data reconstruction process that occurs in a redundant array of independent disks (RAID) implementation when a hard disk drive fails.
  • RAIN (redundant/reliable array of inexpensive/independent nodes) - A reliable array of independent nodes (RAIN) is a heterogeneous cluster of compute and storage nodes connected in a fault-tolerant network topology that incorporates multiple interfaces and redundant hardware.
  • rainbow table - A rainbow table is a listing of all possible plaintext permutations of encrypted passwords specific to a given hash algorithm.
  • rainmaker (business) - A rainmaker is an individual who generates an unusually high amount of revenue for an organization by bringing new clients and new business to the company.
  • raised floor - A raised floor is a data center construction model in which a slightly higher floor is constructed above the building's original concrete slab floor, leaving the open space created between the two for wiring or cooling infrastructure.
  • RAM (Random Access Memory) - RAM (Random Access Memory) is the hardware in a computing device where the operating system (OS), application programs and data in current use are kept so they can be quickly reached by the device's processor.
  • RAM-based solid-state drive (SSD) - A RAM-based solid-state drive (SSD) is a storage device made from silicon microchips that has no moving parts and stores data electronically instead of magnetically.
  • RAMDAC (random access memory digital-to-analog converter) - RAMDAC (random access memory digital-to-analog converter) is a microchip that converts digital image data into the analog data needed by a computer display.
  • RancherOS (Linux) - RancherOS is a lightweight Linux operating system distribution that includes only the necessary libraries and services to deploy and scale containers.
  • random numbers - As the term suggests, a random number is a number chosen by chance -- i.
  • random walk hypothesis - Random walk hypothesis is a mathematical theory where a variable does not follow an apparent trend and moves seemingly at random.
  • Rankine cycle - The Rankine cycle is a method of providing power in a closed system where a fluid is evaporated to perform a task and re-condensed.
  • ransomware - Ransomware is a subset of malware in which the data on a victim's computer is locked -- typically by encryption -- and payment is demanded before the ransomed data is decrypted and access is returned to the victim.
  • ransomware as a service (RaaS) - Ransomware as a service (RaaS) is the offering of pay-for-use malware.
  • ransomware recovery - Ransomware recovery is the process of resuming operations following a cyberattack that demands payment in exchange for unlocking encrypted data.
  • rapid application development (RAD) - Rapid application development (RAD) is a model based on the concept that higher-quality products can be developed faster through more expedient processes, such as early prototyping, reusing software components and less formality in team communications.
  • rapid mobile app development (RMAD) - Rapid mobile application development (RMAD) uses low-code/no-code programming tools to speed the process of application creation for mobile platforms.
  • rapid prototyping - Rapid prototyping is the speedy creation of a full-scale model.
  • Raspberry Pi ($35 computer) - Raspberry Pi is a small, single-board computer that costs $35.
  • raster - Also see frame, raster graphics, and raster image processor.
  • raster graphics - Raster graphics are digital images created or captured (for example, by scanning in a photo) as a set of samples of a given space.
  • raster image processor (RIP) - RIP is also an abbreviation for Routing Information Protocol.
  • RAT (remote access Trojan) - A remote access Trojan (RAT) is a malware program that gives an intruder administrative control over a target computer.
  • Rational Rose - Rational Rose, is a object-oriented Unified Modeling Language (UML) software design tool intended for visual modeling and component construction of enterprise-level software applications.
  • Rational Unified Process (RUP) - Rational Unified Process (RUP) is an object-oriented and Web-enabled program development methodology.
  • raw data (source data or atomic data) - Raw data (sometimes called source data, atomic data or primary data) is data that has not been processed for use.
  • raw device mapping - Raw device mapping (RDM) enables disk access in a virtual machine (VM) in the VMware server virtualization environment and allows a storage logical unit number (LUN) to be connected directly to a VM from the storage area network (SAN).
  • RDBMS (relational database management system) - A relational database management system (RDBMS) is a collection of programs and capabilities that enable IT teams and others to create, update, administer and otherwise interact with a relational database.
  • RDRAM (Rambus DRAM) - Rambus Dynamic Random Access Memory, or RDRAM (Rambus DRAM), is a type of computer device active memory developed and licensed by Rambus Inc.
  • reach - In Internet marketing, reach is how many different people visit a Web site to see an ad and also what percentage of these people fall into the audience to which an ad is targeted.
  • React Native - React Native is an open source JavaScript framework for mobile application development.
  • reactance - Reactance, denoted X, is a form of opposition that electronic components exhibit to the passage of alternating current (alternating current) because of capacitance or inductance.
  • reactive programming - Reactive programming describes a design paradigm that relies on asynchronous programming logic to handle real-time updates to otherwise static content.
  • reactive systems architecture - A computer systems paradigm that takes advantage of the responsiveness, flexibility and resiliency of reactive programming, so that various components can take continue to function and even thrive if any component is compromised.
  • read cache - A read cache is a computer storage component that temporarily keeps a copy of data from a slower permanent storage location in order to accelerate the fulfillment of future requests for the data.
  • read-intensive SSD (read-intensive solid-state drive) - A read-intensive solid-state drive (SSD) is a NAND flash-based storage or caching device used with applications that write data infrequently, in contrast to SSDs that target write-intensive workloads.
  • read-only - Read-only is a file attribute which only allows a user to view a file, restricting any writing to the file.
  • read-only memory (ROM) - Read-only memory, or ROM, is a type of computer storage containing non-volatile, permanent data that, normally, can only be read, not written to.
  • Real ID - Real ID is a driver's license that complies with standards mandated by the United States Real ID Act of 2005.
  • real number - A real number is any element of the set R, which is the union of the set of rational numbers and the set of irrational numbers.
  • real time - Real time is a level of computer responsiveness that a user senses as sufficiently immediate or that enables the computer to keep up with some external process (for example, to present visualizations of the weather as it constantly changes).
  • Real time gross settlement (RTGS) - Real Time Gross Settlement (RTGS) is an electronic form of funds transfer where the transmission takes place on a real time basis.
  • Real Time Streaming Protocol (RTSP) - Real Time Streaming Protocol (RTSP) is an application-level network communication system that transfers real-time data from multimedia to an endpoint device by communicating directly with the server streaming the data.
  • real user monitoring (RUM) - Real user monitoring (RUM) is a technology used by developers and network operators to gain real-world observability into web performance and service availability.
  • real-time analytics - Real-time analytics is the use of data and related resources for analysis as soon as it enters the system.
  • real-time application (RTA) - A real-time application is an application program that functions within a time frame that the user senses as immediate or current.
  • real-time bidding (RTB) - Real-time bidding (RTB) is an automated auction process for the purchase of ad impressions on websites.
  • real-time business intelligence (RTBI) - Real-time business intelligence (RTBI) combines data analytics and various data processing tools to enable access to the most recent, up-to-the-minute relevant data and visualizations.
  • real-time clock (RTC) - A real-time clock (RTC) is a battery-powered clock that is included in a microchip in a computer motherboard.
  • real-time communications (RTC) - Real-time communications (RTC) is any mode of telecommunications in which all users can exchange information instantly or with negligible latency.
  • real-time location system (RTLS) - A real-time location system (RTLS) is one of a number of technologies used to pinpoint the current geographic position and location of a target.
  • real-time marketing - Real-time marketing is a method of targeting individual consumers wherever they may be, based on current data.
  • real-time monitoring - Real-time (data) monitoring is the delivery of continuously updated information streaming at zero or low latency.
  • real-time operating system (RTOS) - A real-time operating system (RTOS) is an OS that guarantees real-time applications a certain capability within a specified deadline.
  • Real-Time Transport Control Protocol (RTCP) - Real-Time Transport Control Protocol (RTCP) is a protocol that works with Real-Time Protocol (RTP) to monitor data delivery on large multicast networks, mainly for streaming media, telephony and video conferencing.
  • Real-time Transport Protocol (RTP) - Real-time Transport Protocol (RTP) is a network standard designed for transmitting audio or video data that is optimized for consistent delivery of live data.
  • reality check - A reality check is a second opinion, either requested or provided voluntarily, about the status of some current situation.
  • reality testing - Reality testing is a check performed to try to determine if someone’s thinking conforms to the general perception of what is real.
  • reboot (warm boot, cold boot) - To reboot is to restart a computer and reload the operating system.
  • rebranding - Rebranding is an update of the materials and presentation used to represent a business.
  • Receive Segment Coalescing (RSC) - Receive Segment Coalescing (RSC) is an offload technology in Windows Server 2012 and Windows Server 2012 R2 that can help reduce how much of the CPU is used in network processing.
  • rechargeable battery - Rechargeable batteries allow for multiple usages from a cell, reducing waste and generally providing a better long-term investment in terms of dollars spent for usable device time.
  • reciprocal meter - The reciprocal meter is the standard unit of wave number for electromagnetic fields (EM fields).
  • recommendation engine - Recommendation engines are common among online retail websites, such as Amazon.
SearchNetworking
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  • virtual network functions (VNFs)

    Virtual network functions (VNFs) are virtualized tasks formerly carried out by proprietary, dedicated hardware.

  • network functions virtualization (NFV)

    Network functions virtualization (NFV) is a network architecture model designed to virtualize network services that have ...

SearchSecurity
  • data breach

    A data breach is a cyber attack in which sensitive, confidential or otherwise protected data has been accessed or disclosed in an...

  • insider threat

    An insider threat is a category of risk posed by those who have access to an organization's physical or digital assets.

  • data compliance

    Data compliance is a process that identifies the applicable governance for data protection, security, storage and other ...

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  • data privacy (information privacy)

    Data privacy, also called information privacy, is an aspect of data protection that addresses the proper storage, access, ...

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    Leadership skills are the strengths and abilities individuals demonstrate that help to oversee processes, guide initiatives and ...

  • data governance policy

    A data governance policy is a documented set of guidelines for ensuring that an organization's data and information assets are ...

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SearchCustomerExperience
  • recommerce

    Recommerce is the selling of previously owned items through online marketplaces to buyers who reuse, recycle or resell them.

  • implementation

    Implementation is the execution or practice of a plan, a method or any design, idea, model, specification, standard or policy for...

  • first call resolution (FCR)

    First call resolution (FCR) is when customer service agents properly address a customer's needs the first time they call.

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