WIFI has many advantages over cable network. You are able to deploy connectivity at places where drilling would be very difficult such as between rooms with concrete or glass walls. Again, it is very easy for laptop users to remain connected to the system as they roam about.
There are many types of WIFI systems. There is the 802.11a which delivers 54 Mbps, 802.11b which delivers a speed of 11 Mbps and the new 802.11n with speeds of 140 megabits per second. All these systems have been ratified for standardization except the 802.11n which is yet to be ratified at the end of 2009.
To be able to connect to the WIFI, you should have wireless card on you PC or internal wireless device on your laptop. The wireless card can be installed or come as inbuilt. Whichever way, it is able to receive data from the nearest access point. How far you are from the transmitting station, your card speed and the type of WIFI will determine how fast your browsing will be.
These days, many companies are offering USB adapters that you can use to receive wireless connectivity. This object looks like a USB pen drive and you can fix at the back of your PC to receive wireless connectivity.
WIFI like WIMAX can have security consequences. You should not use your WIFi in its default state. You should always enable your encryption so that snoopers cannot be able to intercept and decode your messages.
