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What is IEEE 802.11,explain?

IEEE 802.11:

The IEEE 802.11 is a standard introduced by IEEE in June 1997 used for wirelessEthernet networks. Below is a listing of each of the wireless IEEE standards currently available. Home users should only be concerned about 802.11a, 802.11b, or 802.11g for their home wireless network.

Standard    Description
IEEE 802.11 The initial release of the standard capable of transmissions of 1 to 2 Mbps and operates in the 2.4 GHz band.
IEEE 802.11a Capable of transmissions of up to 54 Mbps and operates in the 5 GHz band.
IEEE 802.11b  Introduced in 1999, 802.11b is capable of transmissions of up to 11 Mbps and operates in the 2.4 GHz band.
IEEE 802.11c Defines wireless bridge operations
IEEE 802.11d Defines standards for companies developing wireless products in different countries.
IEEE 802.11e Defines enhancements to the 802.11 MAC for QoS.
IEEE 802.11f Defines Inter Access Point Protocol (IAPP)
IEEE 802.11g Capable of transmissions of up to 20 Mbps and operates in the 2.4, 3.6, and 5 GHzbands.
IEEE 802.11i Improved encryption (WPA).
IEEE 802.11j 802.11 extension used in Japan.
IEEE 802.11n Operates using the 2.4GHz and 5GHz bandwidths. It utilizes multiple-input, multiple-output (MIMO) antennas to improve data transfer speeds

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