Wi-Fi Advantages and Disadvantages
Wi-Fi is stands for Wireless Fidelity; Wi-Fi Technology was developed in 1991 in NCR Corporation which is acquired by AT & T in the same year. The very first product of Wi-Fi is called as "WaveLan" and its data rate is 1 to 2 Mbits/s only.
Now with continues Development of Wi-Fi technology it's got more and more speed ex: IEEE 802.11n at up to 600 Mbits/s and IEEE 802.11g at up to 54 Mbit/s.
How Wi-Fi Works
Normally Wi-Fi network works over radio waves on the air without any wired or physical communication between points. At least two points needs to communicate with Wi-Fi, they may be access point and client or client and client (Ad-hoc Network).We can direct or make Wi-Fi adapters or Access points to communicate each of them by using SSID. if you have multiple Wi-Fi networks around you, you can choose certain Wi-Fi network with SSID. You can restrict or allow particular device or Wi-Fi client by adding MAC address of the client in Access point.

