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Wireless LAN (WLAN)
LAN that uses radio transmission instead of cabling to connect devices
requires standards at layers 1 and 2
standards are created by IEEE
Access Point
connects wireless clients to servers
forwards frames b/w wireless hosts
Access Router
connects wireless clients to Ethernet
Frequency
number of cycles per second
measured in hertz (Hz)
used to measure radio transmission
Omnidirectional Antenna
device that spreads signals in all directions w/ rapid signal attenuation
no need to point at receiver
Dish Antenna
device that focuses signals in a narrow range over long distances
must point at receiver
Note 
Flashcard (33)