Wireless LANs (WLANs)
Use radio or infrared frequencies to transmit signals through the air (instead of cables)
Basic Categories
- Use of Radio frequencies (FOCUS of this chapter)
- 802.1x family of standards (aka, Wi-Fi)
- Use of Infrared frequencies (Optical transmission)
Wi-Fi grown in popularity
- Eliminates cabling
- Facilitates network access from a variety of locations
- Airports, cafes, restaurants, etc.,
- Facilitates for mobile workers (as in a hospital)