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    Wireless Network Technologies - CompTIA A+ 220-1001 Prof Messer

    IT Careers
    wireless wifi 802.11 comptia a+ youtube it career it training video training networking
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    • steve
      steve last edited by

      Youtube Video

      brianwinkelmann 1 Reply Last reply Reply Quote 1
      • mary
        mary last edited by

        Is it important to know what channel you are operating on?

        scottalanmiller 1 Reply Last reply Reply Quote 0
        • JaredBusch
          JaredBusch last edited by

          only for the person designing the deployment.

          or the person troubleshooting problems later when three neighbors added wifi.

          1 Reply Last reply Reply Quote 1
          • scottalanmiller
            scottalanmiller @mary last edited by

            @mary said in Wireless Network Technologies - CompTIA A+ 220-1001 Prof Messer:

            Is it important to know what channel you are operating on?

            If you are troubleshooting. But thats generally it.

            1 Reply Last reply Reply Quote 0
            • connorsoliver
              connorsoliver last edited by

              Why isn't zigbee used for computers?

              scottalanmiller 1 Reply Last reply Reply Quote 0
              • scottalanmiller
                scottalanmiller @connorsoliver last edited by

                @connorsoliver said in Wireless Network Technologies - CompTIA A+ 220-1001 Prof Messer:

                Why isn't zigbee used for computers?

                802.15.4 (aka ZigBee) has a speed of 250 Kb/s which is SO slow. High enough to make two phone calls, but that's it. Not enough to really "do" anything. It's plenty fast to send sensor data or basic instructions, but way too slow for any computer usage.

                Old 802.11b, the slowest computer wireless tech, was 11Mb/s, which is 44x faster than Zigbee and considered worthless because it is so slow. We want our wireless in the 100Mb/s+ range these days.

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                • brianwinkelmann
                  brianwinkelmann @steve last edited by brianwinkelmann

                  Cool Very interesting Video about Wireless Network Technologies

                  1 Reply Last reply Reply Quote 1
                  • valentina
                    valentina last edited by

                    watching this rn : -)

                    1 Reply Last reply Reply Quote 1
                    • Osvaldo
                      Osvaldo last edited by

                      Interesting

                      1 Reply Last reply Reply Quote 0
                      • Osvaldo
                        Osvaldo last edited by

                        I wonder if there is a tool for radio hacking zigbee?

                        travisdh1 1 Reply Last reply Reply Quote 0
                        • travisdh1
                          travisdh1 @Osvaldo last edited by

                          @Osvaldo said in Wireless Network Technologies - CompTIA A+ 220-1001 Prof Messer:

                          I wonder if there is a tool for radio hacking zigbee?

                          Many of the devices that use the protocol are never updated, therefor quite a large target for hacking.

                          The radio protocol itself I doubt is much use to "hack" (Any cheap software defined radio will be able to imitate a Zigbee device.)

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