5.1.12

WiFi

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WiFi

WiFi is a set of protocols that define how network devices can communicate wirelessly over radio waves.

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Definition of WiFi

  • The official name of WiFi is IEEE 802.11x.
  • IEEE 802.11x defines several rules such as:
    • What frequency should the radio waves be?
    • How powerful should the transmitter be?
    • How can data be secured?
    • What should happen if data is lost in transmission?
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WiFi standards

  • There are many different WiFi standards which operate at different speeds. For example:
    • 802.11g operates at 54Mb/s.
    • 802.11n operates at 600Mb/s.
    • 802.11ac operates at 3.2Gb/s.
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Compatibility

  • By creating devices which use the same standards, we can guarantee that devices from different manufacturers will be compatible.

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1Problem Solving

2Programming

3Data

4Computers

5Communication & The Internet

6The Bigger Picture

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