Networking Definitions

This glossary explains the meaning of key words and phrases that information technology (IT) and business professionals use when discussing networking and related software products. You can find additional definitions by visiting WhatIs.com or using the search box below.

  • C

    client-server model (client-server architecture)

    Client-server is a relationship in which one program (the client) requests a service or resource from another program (the server). At the turn of the last century, the label client-server was used to distinguish distributed computing by personal computers (PCs) from the monolithic, centralized computing model used by mainframes.

  • clone

    A clone is an identical copy of something and is a term that first became familiar to the public from the biosciences.

  • Clos network

    A Clos network is a type of non-blocking, multistage switching architecture that reduces the number of ports required in an interconnected fabric.

  • cloud

    In telecommunications, a cloud is the unpredictable part of any network through which data passes between two end points.

  • cloud federation

    Cloud federation is the practice of interconnecting service providers' cloud environments to load balance traffic and accommodate spikes in demand.

  • cloud radio access network (C-RAN)

    C-RAN, or cloud radio access network, is a centralized, cloud computing-based architecture for radio access networks (RAN) that enables large-scale deployment, collaborative radio technology support and real time virtualization capabilities.

  • coarse wavelength division multiplexing (CWDM)

    Coarse wavelength division multiplexing (CWDM) is a method of combining multiple signals on laser beams at various wavelengths for transmission along fiber optic cables, such that the number of channels is fewer than in dense wavelength division multiplexing (DWDM) but more than in standard wavelength division multiplexing (WDM).

  • coaxial cable

    Coaxial cable is a type of copper cable specially built with a metal shield and other components engineered to block signal interference.

  • COFDM

    COFDM is a modulation scheme that divides a single digital signal across 1,000 or more signal carriers simultaneously.

  • cognitive radio (CR)

    Cognitive radio (CR) is a form of wireless communication in which a transceiver can intelligently detect which communication channels are in use and which are not, and instantly move into vacant channels while avoiding occupied ones... (Continued)

  • collision

    In a half duplex Ethernet network, a collision is the result of two devices on the same network attempting to transmit data at exactly the same time.

  • comfort noise generator (CNG)

    A comfort noise generator (CNG) is a program used to generate background noise artificially for voice communications during periods of silence that occur during the course of conversation... (Continued)

  • committed information rate (CIR)

    committed information rate

  • common channel signaling (CCS)

    Common channel signaling (CCS) is signaling (for example, in a T-carrier system line) in which a group of voice-and-data channels share a separate channel that is used only for control signals.

  • Common Management Information Protocol (CMIP)

    Common Management Information Protocol (CMIP) is a network management protocol built on the Open Systems Interconnection (OSI) communication model.

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