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  • 6to4

    6to4 is a tunneling mechanism used to transfer IPv6 (Internet Protocol version 6) packets over an IPv4 infrastructure, typically the IPv4 Internet. The 6to4 mechanism was created to support coexistence of both versions during the transition to IPv6, ...  Definition

  • ping

    Ping is a basic Internet program that allows a user to verify that a particular IP address exists and can accept requests. The verb "ping" means the act of using the ping utility or command.  Definition

  • Peltier effect

    The Peltier effect is a temperature difference created by applying a voltage between two electrodes connected to a sample of semiconductor material. This phenomenon can be useful when it is necessary to transfer heat from one medium to another on a s...  Definition

  • FECN/BECN (forward explicit congestion notification/backward explicit congestion notification)

    In a frame relay network, FECN (forward explicit congestion notification) is a header bit transmitted by the source (sending) terminal requesting that the destination (receiving) terminal slow down its requests for data.  Definition

  • client/server

    Client/server describes the relationship between two computer programs in which one program, the client, makes a service request from another program, the server, which fulfills the request.  Definition

  • CSU/DSU (Channel Service Unit/Data Service Unit)

    A CSU/DSU (Channel Service Unit/Data Service Unit) is a hardware device about the size of an external modem that converts a digital data frame from the communications technology used on a local area network (LAN) into a frame appropriate to a wide-ar...  Definition

  • TCP/IP (Transmission Control Protocol/Internet Protocol)

    TCP/IP (Transmission Control Protocol/Internet Protocol) is the basic communication language or protocol of the Internet  Definition

  • ARPANET

    ARPANET was the network that became the basis for the Internet. Based on a concept first published in 1967, ARPANET was developed under the direction of the U.S. Advanced Research Projects Agency (ARPA). In 1969, the idea became a modest reality wit...  Definition

  • IT Survival Kit: Networking refreshers

    Quick Network Security & Hardware Refreshers School is out for college students across the US, but the learning never stops for IT professionals.  Definition

  • ELF (extremely low frequency)

    ELF (extremely low frequency) refers to an electromagnetic field having a frequency much lower than the frequencies of signals typically used in communications.  Definition

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