Anywhere Computing with Laptops: Making Mobile Easier

Summary

Here are the key points to remember from this chapter:

• All radio transmissions operate on a spectrum band.

• Wi-Fi uses the unlicensed 2.4GHz and 5GHz bands.

• 802.11 is the engineer's name for a wireless standard that uses a free portion of the broadcast spectrum.

• Wi-Fi is the name given to wireless devices that are certified to be compatible and use the 802.11 standard.

• 802.11g is rapidly becoming the predominate flavor of Wi-Fi today. 802.11g equipment costs about the same as 802.11b, but 802.11g is five times faster.

• Because 802.11g is backward compatible with 802.11b, and only a little more expensive, if you are buying a laptop that uses Intel Centrino mobile technology, you should be sure that it runs 802.11g.

• Wi-Fi provides data throughput ...