What is 802.11X? standards confusion

Asked By 810 points N/A Posted on -
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Hi,

I am Mario Crasto.

I am really confused with 802.11x. There is  so much 802.11x standards, that I don't know which to use and when to use.  Which one is better performance wise and what is the cost . Please, can anybody help me to clear my confusion? I want a comparison of all the standards. Please help.

Thanks.

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Answered By 210 points N/A #128182

What is 802.11X? standards confusion

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Hi Mario,

I am Todd. Here I am giving you the solution of your question. Hope it will clear your confusion. I Will give you a brief overview of each standard and a comparison of each standard.

  • First of all we see what is 802.11x exactly?

A wireless LAN is one, in which a mobile user can connect to a local area network (LAN), through a wireless (radio) connection. A standard, IEEE 802.11, specifies the technologies for wireless LANs.

  • Which are different main  802.11 standards use?

Wireless LAN standards are defined by the IEEE's 802.11 working group. WLANs come in three flavors:

  • 802.11b

    • Operates in the 2.4000 GHz to 2.2835GHz frequency range and can operate at up to 11 megabits per second.

  • 802.11a

    • Operates in the 5.15-5.35GHz to 5.725-5.825GHz frequency range and can operate at up to 54 mega bits per second.

  • 802.11g

    • Operates in the 2.4GHz frequency range (increased bandwidth range) and can operate at up to 54 megabits per second.

    • Comparison between all three standards

     

     

    802.11

    802.11a

    802.11b

    802.11g

    Frequency

    2.4GHz

    5GHz

    2.4GHz

    2.4GH

    Rate(s)

    1 or 2 Mbps

    6, 9, 12, 18, 24, 36, 48, 54 Mbps

    1, 2, 5.5 or 11 Mbps

    6, 9, 12, 18, 24, 36, 48, 54 Mbps

    Modulation

    FHSS/DSSS

    OFDM

    DSSS

    OFDM

    Effective Data Throughput

    1.2 Mbps

    32 Mbps

    5 Mbps

    32 Mbps

    Advertised Range

    300 ft

    225 ft

    300 ft

    300 ft

    Encryption?

    Yes

    Yes

    Yes

    Yes

    Encryption Type

    40 bit RC4

    40 or 104-bit RC4

    40 or 104-bit RC4

    40 or 104-bit RC4

    Authentication

    No

    No

    No

    No

    Network Support

    Ethernet

    Ethernet

    Ethernet

    Ethernet

     

    Hope  the above information is clear to you and you have no confusion now
     
    Thanks and Regards
     
    Todd Lamle

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