Wi Fi WikipediaWireless Internet redirects here.For mobile wireless Internet, see Mobile broadband.Wi Fi or Wi. Fi wafa is a technology for wireless local area networking with devices based on the IEEE 8.Wi Fi is a trademark of the Wi Fi Alliance, which restricts the use of the term Wi Fi Certified to products that successfully complete interoperability certification testing. Management Theory And Practice Book Pdf . Devices that can use Wi Fi technology include personal computers, video game consoles, phones and tablets, digital cameras, smart TVs, digital audio players and modern printers.Wi Fi compatible devices can connect to the Internet via a WLAN and a wireless access point.Such an access point or hotspot has a range of about 2.Hotspot coverage can be as small as a single room with walls that block radio waves, or as large as many square kilometres achieved by using multiple overlapping access points.Depiction of a device sending information wirelessly to another device, both connected to the local network, in order to print a document.Wi Fi most commonly uses the 2.UHF and 5. 8 gigahertz 5 cm SHFISM radio bands.Anyone within range with a wireless modem can attempt to access the network, because of this Wifi is more vulnerable to attack called eavesdropping than wired networks.HistoryeditIn 1. ALOHAnet connected the Hawaiian Islands with a UHF wireless packet network.ALOHAnet and the ALOHA protocol were early forerunners to Ethernet, and later the IEEE 8.A 1. 98. 5 ruling by the U.S. Federal Communications Commission released the ISM band for unlicensed use.These frequency bands are the same ones used by equipment such as microwave ovens and are subject to interference.In 1. 99. 1, NCR Corporation with AT T Corporation invented the precursor to 8.Wave. LAN. The Australian radio astronomer Dr John OSullivan with his colleagues Terence Percival, Graham Daniels, Diet Ostry, and John Deane3 developed a key patent used in Wi Fi as a by product of a Commonwealth Scientific and Industrial Research Organisation CSIRO research project, a failed experiment to detect exploding mini black holes the size of an atomic particle.Dr OSullivan and his colleagues are credited with inventing Wi Fi.In 1.
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