Browse Definitions by Alphabet

ROADM (reconfigurable optical add-drop multiplexer) - An ROADM (reconfigurable optical add-drop multiplexer) is a device that can add, block, pass or redirect modulated infrared (IR) and visible light beams of various wavelengths in a fiber optic network.
Robert Metcalfe - Robert 'Bob' Melancton Metcalfe, born April 7, 1946, is an American engineer, entrepreneur, professor, writer and venture capitalist.
robo-advisor - A robo-advisor is a virtual financial advisor powered by artificial intelligence (AI) that employs an algorithm to deliver an automated selection of financial advisory services.
robocall - Robocalls are automated telephone calls that deliver a recorded message.
robot - A robot is a machine designed to execute one or more tasks automatically with speed and precision.
robot economy - The robot economy is a scenario in which most of the labor required to sustain human life is automated.
robotic process automation (RPA) - Robotic process automation (RPA) is a technology that mimics the way humans interact with software to perform high-volume, repeatable tasks.
robotic surgery (robot-assisted surgery) - Robotic surgery is the use of computer technologies working in conjunction with robot systems to perform medical procedures.
robotics - Robotics is a branch of engineering that involves the conception, design, manufacture and operation of robots.
role mining - Role mining is the process of analyzing user-to-resource mapping data to determine or modify user permissions for role-based access control (RBAC) in an enterprise.
role-playing game (RPG) - A role-playing game (RPG) is a game in which each participant assumes the role of a character that can interact within the game's imaginary world.
rolling deployment - A rolling deployment is the installation of software updates on one server or server subset at a time, rather than updating all servers or server subsets at the same time.
room-scale virtual reality (VR) - Room-scale (or roomscale) virtual reality (VR) is the use of clear space to allow movement for someone using a VR application such as a VR game.
root cause analysis - Root cause analysis (RCA) is a method for understanding the underlying cause of an observed or experienced incident.
rootkit - A rootkit is a program or a collection of malicious software tools that give a threat actor remote access to and control over a computer or other system.
round robin - A round robin is an arrangement of choosing all elements in a group equally in some rational order, usually from the top to the bottom of a list and then starting again at the top of the list and so on.
rounding error - Rounding error is the difference between a rounded-off numerical value and the actual value.
route summarization (route aggregation) - Route summarization -- also known as route aggregation -- is a method to minimize the number of routing tables in an Internet Protocol (IP) network.
router - A router is a physical or virtual appliance that passes information between two or more packet-switched computer networks.
Routing Information Protocol (RIP) - Routing Information Protocol (RIP) is a distance vector protocol that uses hop count as its primary metric.
routing table - A routing table is a set of rules, often viewed in table format, that's used to determine where data packets traveling over an Internet Protocol (IP) network will be directed.
RPC over HTTP - Remote Procedure Call over HTTP (RPC over HTTP) is a Microsoft protocol that enables Microsoft Outlook clients to access Microsoft Exchange servers over HTTP.
RPM Package Manager (Red-hat Package Manager) - RPM Package Manager (RPM), originally called the Red-hat Package Manager, is a program for installing, uninstalling, and managing software packages in Linux.
RRAM or ReRAM (resistive RAM) - RRAM or ReRAM (resistive random access memory) is a form of nonvolatile storage that operates by changing the resistance of a specially formulated solid dielectric material.
RS Means - RS Means is a division of Reed Business Information that provides cost information to the construction industry so contractors in the industry can provide accurate estimates and projections for their project costs.
RS-232C - RS-232C is one of the earlier versions of the long-established standard RS-232, which defines a physical interface for relatively low-speed serial data communication between computers and related devices.
RSA algorithm (Rivest-Shamir-Adleman) - The RSA algorithm (Rivest-Shamir-Adleman) is the basis of a cryptosystem -- a suite of cryptographic algorithms that are used for specific security services or purposes -- which enables public key encryption and is widely used to secure sensitive data, particularly when it is being sent over an insecure network, such as the internet.
RSAT (Remote Server Administration Tools) - RSAT (Remote Server Administration Tools) refers to a set of tools from Microsoft that enable IT administrators to remotely manage roles and features in Windows Server from a computer that is running Windows 11, Windows 10 or Windows 7 Service Pack 1.
Ruby - Ruby is an open source, interpreted, object-oriented programming language created by Yukihiro Matsumoto, who chose the gemstone's name to suggest "a jewel of a language.
Ruby on Rails (RoR or Rails) - Ruby on Rails is an open-source framework for database-backed web development in Ruby, an object-oriented programming language similar to Perl and Python.
rule of five (statistics) - The rule of five is a rule of thumb in statistics that estimates the median of a population by choosing a random sample of five from that population.
runbook - Runbooks are a set of standardized written procedures for completing repetitive IT processes within a company.
runlevel - A runlevel is an operating state on a Unix and Unix-based operating system that is preset on the Linux-based system.
runtime - Runtime is a piece of code that implements portions of a programming language's execution model.
Ryzen (AMD Ryzen) - Ryzen (pronounced RYE zen) is an AMD CPU aimed at the server, desktop, workstation, media center PC and all-in-one markets.
What is ransomware? How it works and how to remove it - Ransomware is a type of malware that locks and encrypts a victim's data, files, devices or systems, rendering them inaccessible and unusable until the attacker receives a ransom payment.
What is risk management and why is it important? - Risk management is the process of identifying, assessing and controlling threats to an organization's capital, earnings and operations.
What is risk mitigation? - Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business.
What is role-based access control (RBAC)? - Role-based access control (RBAC) is a method of restricting network access based on the roles of individual users within an enterprise.