D - Definitions

  • D

    data center interconnect (DCI)

    Data center interconnect (DCI) technology links two or more data centers together to share resources.

  • data link layer

    The data link layer is the protocol layer in a program that handles how data moves in and out of a physical link in a network.

  • data plane

    The data plane -- sometimes known as the user plane, forwarding plane, carrier plane or bearer plane -- is the part of a network that carries user traffic.

  • data streaming

    Data streaming is the continuous transfer of data from one or more sources at a steady, high speed for processing into specific outputs.

  • deep packet inspection (DPI)

    Deep packet inspection (DPI) is an advanced method of examining and managing network traffic.

  • delay-tolerant network (DTN)

    A delay-tolerant network (DTN) is a network that's designed to operate effectively in extreme conditions and over very large distances, such as with space communications.

  • dense wavelength-division multiplexing (DWDM)

    Dense wavelength-division multiplexing (DWDM) is an optical fiber multiplexing technology that is used to increase the bandwidth of existing fiber networks.

  • DHCP (Dynamic Host Configuration Protocol)

    DHCP (Dynamic Host Configuration Protocol) is a network management protocol used to dynamically assign an IP address to any device, or node, on a network so it can communicate using IP.

  • domain name system (DNS)

    The domain name system (DNS) is a naming database in which internet domain names are located and translated into Internet Protocol (IP) addresses.

  • downloading

    Downloading is the transmission of a file or data from one computer to another over a network, usually from a larger server to a user device.

  • DTMF (dual tone multi-frequency)

    Dual tone multi-frequency (DTMF) is the sounds or tones generated by a telephone when the numbers are pressed.

  • dynamic and static

    In general, dynamic means 'energetic, capable of action and/or change, or forceful,' while static means 'stationary or fixed.'

  • dynamic multipoint VPN (DMVPN)

    A dynamic multipoint virtual private network (DMVPN) is a secure network that exchanges data between sites/routers without passing traffic through an organization's virtual private network (VPN) server or router located at its headquarters.

  • dynamic port numbers

    Dynamic port numbers, also known as private port numbers, are the port numbers that are available for use by any application to use in communicating with any other application, using the internet's Transmission Control Protocol (TCP) or User Datagram Protocol (UDP).

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