D - Definitions

  • D

    D-channel

    In the Integrated Services Digital Network (ISDN), the D-channel is the channel that carries control and signalling information.

  • daisy chain

    A daisy chain is an interconnection of computer devices, peripherals, or network nodes in series, one after another. It is the computer equivalent of a series electrical circuit.

  • dark fiber

    Dark fiber is optical fiber infrastructure (cabling and repeaters) that is currently in place but is not being used.

  • darknet

    A darknet is a routed allocation of IP address space that is not discoverable by any usual means.

  • DARPA (Defense Advanced Research Projects Agency)

    DARPA (Defense Advanced Research Projects Agency) is the independent research branch of the U.S. Department of Defense that funded a project that in time was to lead to the creation of the Internet.

  • DARPANET

    DARPANET (or DARPANet) is a term sometimes used for the ARPANET, the early network from which today's Internet evolved.

  • data link control (DLC)

    DLC also is an abbreviation for digital loop carrier.

  • data link layer

    The Data-Link Layer is the protocol layer in a program that handles the moving of data in and out across a physical link in a network.

  • data streaming

    Data streaming is the transfer of data at a steady high-speed rate sufficient to support such applications as high-definition television (HDTV) or the continuous backup copying to a storage medium of the data flow within a computer.

  • Data-Link layer

    The Data-Link layer is the protocol layer in a program that handles the moving of data in and out across a physical link in a network.

  • datagram

    A datagram is, to quote the Internet's Request for Comments 1594, "a self-contained, independent entity of data carrying sufficient information to be routed from the source to the destination computer without reliance on earlier exchanges between this source and destination computer and the transporting network."

  • DCE (Distributed Computing Environment)

    In network computing, DCE (Distributed Computing Environment) is an industry-standard software technology for setting up and managing computing and data exchange in a system of distributed computers.

  • DECT (Digital Enhanced Cordless Telecommunications)

    Unlike the analog cordless phones you may have in your home, DECT (Digital Enhanced Cordless Telecommunications) is a digital wireless telephone technology that is expected to make cordless phones much more common in both businesses and homes in the future.

  • deep packet inspection (DPI)

    Deep packet inspection (DPI) is an advanced method of packet filtering that functions at the Application layer of the OSI (Open Systems Interconnection) reference model... (Continued)

  • delay-tolerant network

    A delay-tolerant network is a network designed to operate effectively over extreme distances such as those encountered in space communications or on an interplanetary scale... (Continued)

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