What is the used of wi-fi ?

Question

what is it advantages

Answer 1

ummm... it's wireless. That's really the only purpose.

Answer 2

The biggest advantage of WiFi is that you don't need wires to connect to the Internet or your local area network. Having network jacks installed near all of the user's computers (even if its just a couple in a home) costs an average of $150 per network drop, and you need 1 for each user, plus the central point where they all connect. Some companies also have a minimum charge. WiFi eliminates this expense. WiFi gives you the freedom to roam (with a laptop) within a few hundred feet (depending on the number of walls it must penetrate) of the access point.

One disadvantage, however, is speed. If you're only using the WiFi to connect to the Internet, then speed isn't an issue, since your Internet connection is always slower than even the slowest WiFi connection (802.11b). But if you're setting up a proper network for your office, and you will be sharing a lot of files between computers, then you may want to consider a wired network, where you can attain speeds up to 1000Mbps.

Answer 3

The common use of the term Wi-Fi, as now used, describes the generic wireless interface of mobile computing devices, such as laptops in LANs.

The term Wi-Fi was originally a brand licensed by the Wi-Fi Alliance to describe the embedded technology of wireless local area networks (WLAN) based on the IEEE 802.11 standard.

It is the wireless Internet in common use in laptops and now days lots of desktops to eliminate the wires from a router to the computer. It also allows a business like an airport or coffee shop or hotel to provide Internet service without having to wire the business with Internet jacks and customers can use the network without having to hook up wires to an Internet outlet.