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Computing fundamentals

Terms related to computer fundamentals, including computer hardware definitions and words and phrases about software, operating systems, peripherals and troubleshooting.

QUE - RET

  • queries-per-second (QPS) - Queries-per-second (QPS) (or the query-per-second rate) is a measure of how much traffic a particular query server is handling at a given time.
  • queue - In general, a queue is a line of people or things waiting to be handled, usually in sequential order starting at the beginning or top of the line or sequence.
  • queueing theory - In computer science, queueing theory is the study of queues as a technique for managing processes and objects in a computer.
  • quiet zone - In barcode technology, a quiet zone is the blank margin on either side of a bar code that's used to tell the barcode reader where a barcode's symbology starts and stops.
  • Quiz: Talkin' tech turkey - A quiz full of tasty tech terms.
  • Quiz: Who Done IT? A Murder Mystery - How to take the quiz: - After reading the question, click on the answer that you think is correct.
  • 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).
  • random numbers - Random numbers are numbers that occur in a sequence such that two conditions are met: ( the values are uniformly distributed over a defined interval or set, and (2) it is impossible to predict future values based on past or present ones.
  • 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.
  • ratio - In general, a ratio is a way of concisely showing the relationship between two quantities of something.
  • rational number - A rational number is a number determined by the ratio of some integer p to some nonzero natural number q.
  • raw data (source data or atomic data) - Raw data (sometimes called source data or atomic data) is data that has not been processed for meaningful use.
  • 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 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 monitoring - Real-time (data) monitoring is the delivery of continuously updated information streaming at zero or low latency.
  • Rear Admiral Grace Murray Hopper - Grace Murray Hopper (1906-1992) was a pioneer in computer science.
  • reboot (warm boot, cold boot) - To reboot is to restart a computer and reload the operating system.
  • refresh - In a computer display, to refresh is to redraw the image information from memory.
  • reliability - Reliability is an attribute of any computer-related component (software, or hardware, or a network, for example) that consistently performs according to its specifications.
  • reload - In computers, to reload is to start a program over again, usually because it has crashed or because it has begun to display aberrant behavior.
  • remote-control software - Remote-control software is programming in a central or server computer that is used to control other computers (or their users) at a distance, either under the control of an administrator or at the request of the user.
  • replicator - A replicator is an object or organism that can make copies of itself.
  • request for quotation (RFQ) - A request for quotation (RFQ) is a document that an organization submits to one or more potential suppliers eliciting quotations for a product or service.
  • reseller - In information technology, a reseller is a company that typically purchases IT products or services from a product manufacturer, distributor or service provider and then markets them to customers.
  • resolution - In computers, resolution is the number of pixels (individual points of color) contained on a display monitor, expressed in terms of the number of pixels on the horizontal axis and the number on the vertical axis.
  • response time - According to the IBM Dictionary of Computing (which cites International Organization for Standardization Information Technology Vocabulary as the source), response time is: The elapsed time between the end of an inquiry or demand on a computer system and the beginning of a response; for example, the length of the time between an indication of the end of an inquiry and the display of the first character of the response at a user terminal.
  • return merchandise authorization (RMA) - An RMA (return merchandise authorization) is a numbered authorization provided by a mail-order merchant to permit the return of a product.

SearchCompliance

  • risk assessment

    Risk assessment is the identification of hazards that could negatively impact an organization's ability to conduct business.

  • PCI DSS (Payment Card Industry Data Security Standard)

    The Payment Card Industry Data Security Standard (PCI DSS) is a widely accepted set of policies and procedures intended to ...

  • risk management

    Risk management is the process of identifying, assessing and controlling threats to an organization's capital and earnings.

SearchSecurity

  • tokenization

    Tokenization is the process of replacing sensitive data with unique identification symbols that retain all the essential ...

  • incident response

    Incident response is an organized approach to addressing and managing the aftermath of a security breach or cyberattack, also ...

  • Federal Information Security Management Act (FISMA)

    The Federal Information Security Management Act (FISMA) is United States legislation that defines a framework of guidelines and ...

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SearchDisasterRecovery

  • call tree

    A call tree is a layered hierarchical communication model that is used to notify specific individuals of an event and coordinate ...

  • Disaster Recovery as a Service (DRaaS)

    Disaster recovery as a service (DRaaS) is the replication and hosting of physical or virtual servers by a third party to provide ...

  • cloud disaster recovery (cloud DR)

    Cloud disaster recovery (cloud DR) is a combination of strategies and services intended to back up data, applications and other ...

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