# - Definitions

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    2-in-1 tablet (hybrid tablet, convertible tablet)

    A 2-in-1 tablet, also known as a hybrid or convertible tablet, is a tablet PC that also functions as a notebook

  • 2D barcode (two-dimensional barcode)

    A 2D (two-dimensional) barcode is a graphical image that stores information both horizontally -- as one-dimensional bar codes do -- and vertically. As a result of that construction, 2D codes can store up to 7,089 characters, significantly greater storage than is possible with the 20-character capacity of a unidimensional barcode.

  • 3G card

    A 3G card is a modem that allows a computing device to access the Internet wirelessly through a cellular provider's 3G network.

  • 4G (fourth-generation wireless)

    4G is the short term for fourth-generation wireless, the stage of broadband mobile communications that will supercede the third generation (3G) of wireless communications....(Continued)

  • 802.11

    802.11 is an evolving family of specifications for wireless local area networks (WLANs) developed by a working group of the Institute of Electrical and Electronics Engineers (IEEE)....(Continued)

  • 802.11b

    The 802.11b standard for wireless local area networks (WLANs) - often called Wi-Fi - is part of the 802.11 series of WLAN standards from the Institute of Electrical and Electronics Engineers (IEEE).

  • 802.11d

    802.11d is a communications specification for use in countries where systems using other standards in the 802.11 family are not allowed to operate.

  • 802.11e

    802.11e is a proposed enhancement to the 802.11a and 802.11b wireless LAN (WLAN) specifications.

  • 802.11g

    The 802.11g specification is a standard for wireless local area networks WLANs) that offers wireless transmission over relatively short distances at up to 54 megabits per second (Mbps), compared with the 11 Mbps theoretical maximum with the earlier 802.11b standard.

  • 802.11h

    The 802.11h specification is an addition to the 802.11 family of standards for wireless local area networks (WLANs). 802.11h is intended to resolve interference issues introduced by the use of 802.11a in some locations, particularly with military radar systems.

  • 802.11i

    802.11i is a standard for wireless local area networks (WLANs) that provides improved encryption for networks that use the popular 802.11a and 802.11b (which includes Wi-Fi standards).

  • 802.11j

    The 802.11j specification is a proposed addition to the 802.11 family of standards for wireless local area networks (WLANs) that incorporates Japenese regulatory extensions to the 802.11a standard.

  • 802.11k

    802.11k is a proposed standard for a series of measurement requests and reports involving channel selection, roaming, transmit power control (TPC), and subscriber statistics in 802.11 wireless local area networks (WLANs).

  • 802.11m

    802.11m is an initiative to perform editorial maintenance, corrections, improvements, clarifications, and interpretations relevant to documentation for 802.11 family specifications.

  • 802.11n

    802.11n is an addition to the 802.11 family of standards. The goal of 802.11n is to increase wireless local area network (WLAN) speed, improve reliability and extend the range of wireless transmissions. 802.11n uses multiple input / multiple output (MIMO) technology and a wider radio frequency channel.

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