Originally Posted by crazydj
I see. Does it work the same way with the user entering a unique code?
With WPA-PSK what you do is you go into the routers security settings and type in any password you want.
Then every client (computer) that tries to connect wirelessly has to enter that same password. A dialog box should pop up once you try to connect asking for the password to be entered twice.
Difference between a/b/g:
As stated A uses a different frequency to avoid wireless congestion. You'll notice that many different devices are using 2.4ghz to transmit data now.
B uses the 2.4ghs frequency i was talking about and only transmits at 11mbps. I believe it has all the same security protocols as G, just the security protocols differs between the routers you may own/ have used.
G also uses the 2.4ghz frequency but is about 5 times faster than B (not actual throughput). G is also backwards compatible with B so if you get a G router and a friend has a B wireless card, he'll still be able to connect but his connection will be at 11mbps vs. the 54mbps you would get.
N uses the 2.4ghz frequency as well, but the protocol is not entirely finished, there are currently only "Pre-N" and "Draft-N" routers out at the moment. N is supposed to achieve speeds upwards of 300mbps and just about double the range of G.
Hope this helped a bit!