The protocol series for wireless devices is recognizable with a certain standard consisting of a series of numbers
. At first glance most people that aren't computer savvy would have no clue what this means. It's simply the way that different types of computer devices are labeled according to their functions.
The classification for networking devices and routers is seen with the number 802.11. Anything with this number on it will be connected to your computer network. Most people recognize this number from their routers.
After the number 802.11 there will usually be a letter. This letter allows for an even more specific classification. On your network router, you will either see 802.11a, 802.11b, 802.11g, 802.11n.
802.11a is one of the slower standardizations. One advantage it has over 802.11b is that it runs in the 5 GHz band which gives it less interference. Unfortunately this also gives it a smaller range.
The 802.11b functions with the 2.4 GHz band giving it that annoying interference. If you can stand the interference, it will give you a wider range and allow easier penetration through walls and doors. The 802.11b devices work hand in hand with the 802.11g devices.
The standardization 802.11g can work hand in hand with 802.11b parts. The only problem is that having 802.11b parts will slow your network down. 802.11g devices will also function on the widely known 2.4 GHz band which gives it many of the same characteristics of the 802.11b.
The most recent standardization is known as 802.11n. It is currently being tested but routers with this number can still be purchased. They are trying to give it the speeds of an 802.11g with the ability to function on both bands.
Networking classifications are most important as you are buying the devices. You want to make sure you are buying compatible devices. Which standardization you pick will depend on your situation but make sure you stick with the one that is right for you.