W - Definitions

  • W

    Wake on LAN

    Wake on LAN is a technology that allows a network professional to remotely power on a computer or to wake it up from sleep mode.

  • WATS (wide-area telephone service)

    WATS (wide-area telephone service) is a specialized form of fixed-rate long-distance telecommunication service.

  • wavelength

    A wavelength is a measure of distance between two identical peaks (high points) or troughs (low points) in a wave -- a repeating pattern of traveling energy like light or sound.

  • wavelength-division multiplexing (WDM)

    Wavelength-division multiplexing (WDM) is a method of combining multiple signals on laser beams at various infared (IR) wavelengths for transmission along fiber optic media. Each laser is modulated by an independent set of signals. Wavelength-sensitive filters, the IR analog of visible-light color filters, are used at the receiving end... (Continued...)

  • Webcast

    Also see push technology, another usage.

  • WebNFS

    WebNFS is a product and proposed standard protocol from Sun Microsystems that extends its Network File System (NFS) to the Internet.

  • weighted fair queueing (WFQ)

    Weighted fair queueing (WFQ) is a method of automatically smoothing out the flow of data in packet-switched communication networks by sorting packets to minimize the average latency and prevent exaggerated discrepancies between the transmission efficiency afforded to narrowband versus broadband signals.

  • well-known port numbers

    The well-known port numbers are the port numbers that are reserved for assignment by the Internet Corporation for Assigned Names and Numbers (ICANN) for use by the application end points that communicate using the Internet's Transmission Control Protocol (TCP) or the User Datagram Protocol (UDP).

  • whiteboard

    A whiteboard is a non-electronic variation of the traditional "rewriteable" schoolroom blackboard, but is white instead of black and of a material that can be written on with colored markers (known as dry erase markers).

  • whois

    whois is a program that will tell you the owner of any second-level domain name who has registered it with Verisign (or with Network Solutions, which was acquired by Verisign).

  • Wi-Fi Multimedia (WMM)

    Wi-Fi Multimedia (WMM), previously known as Wireless Multimedia Extensions (WME), is a subset of the 802.11e wireless LAN (WLAN) specification that enhances quality of service (QoS) on a network by prioritizing data packets according to four categories... (Continued)

  • Wide Area Application Services (WAAS)

    Wide Area Application Services (WAAS) is a Cisco Systems technology that improves the performance of applications on a wide area network (WAN). (Continued...)

  • wideband

    Wideband is a transmission medium or channel that has a wider bandwidth than one voice channel (with a carrier wave of a certain modulated frequency).

  • wildcard mask

    A wildcard mask is a sequence of numbers that streamlines packet routing within the subnets of a proprietary network... (Continued)

  • wink

    In telecommunications, a wink is a signal in the form of a brief interruption in an otherwise continuous signal.

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