What is the Full Form of Wifi ?

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Wifi Full Name is Wireless Fidelity.  Wife  is a listening brand from which many people can be contacted with the network. This mobile phone, computer and other devices are used to connect wirelessly to a limited area with the Internet. It is also local area wireless technology allows an electronic device to transfer data or connect to the internet using ISM radio bands. It is an underlying technology of wireless local area network. Wi-Fi can be used on several types of devices like personal computers, video game console, smart phones, digital camera, tablet computers etc. You can use Wi-Fi to create a hotspot within the range of 20 meters (66 feet). It is less secure than wired connection because the intruder does not need the physical connection to use the Wi-Fi.

Wi-Fi provides service in private homes, businesses, as well as in public.  It hotspots set up either free-of-charge or commercially, often using a captive portal webpage for access. Organizations and businesses, such as airports, hotels, and restaurants, often provide free-use hotspots to attract customers. Enthusiasts or authorities who wish to provide services or even to promote business in selected areas sometimes provide free Wi-Fi access.
Wi-Fi technology may be used to provide Internet access to devices that are within the range of a wireless network. That is can extend from an area as small as a few rooms to as large as many square kilometres. Coverage in the larger area may require a group of access points with overlapping coverage. 

Wi-Fi also connects places that normally don't have network access, such as kitchens and garden sheds. Similarly, battery-powered routers may include a cellular Internet radiomodem and Wi-Fi access point. When subscribed to a cellular data carrier, they allow nearby Wi-Fi stations to access the Internet over 2G, 3G, or 4G networks using the tethering technique. Many smartphones have a built-in capability of this sort, including those based on Android, BlackBerry, Bada, iOS (iPhone), Windows Phone and Symbian, though carriers often disable the feature, or charge a separate fee to enable it, especially for customers with unlimited data plans. "Internet packs" provide standalone facilities of this type as well, without use of a smartphone; examples include the MiFi- and WiBro-branded devices. Some laptops that have a cellular modem card can also act as mobile Internet Wi-Fi access points.
Wi-Fi is based on IEEE 802.11 specifications. This is a list of Wi-Fi standards in chronological order :-
  • 802.11a
  • 802.11b
  • 802.11g
  • 802.11n
  • 802.11ac

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