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. 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. Talkatone_610x286.jpg' alt='Share Dial Up Over Wifi' title='Share Dial Up Over Wifi' />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. The IEEE does not test equipment for compliance with their standards. The nonprofit WiFi Alliance was formed in 1999 to fill this void to establish and enforce. Crossdevice protection against the latest viruses, malware and other online threats for up to 5 of your PC, Mac and mobile devices, enabling you to surf, share, shop. CSIRO obtained patents7 for a method later used in Wi Fi to unsmear the signal. The first version of the 8. Mbits link speeds. This was updated in 1. Mbits link speeds, and this proved to be popular. In 1. 99. 9, the Wi Fi Alliance formed as a trade association to hold the Wi Fi trademark under which most products are sold. Wi Fi uses a large number of patents held by many different organizations. In April 2. 00. 9, 1. CSIRO 1 billion for infringements on CSIRO patents. This led to Australia labeling Wi Fi as an Australian invention,1. CSIRO won a further 2. Wi Fi patent infringements in 2. United States required to pay the CSIRO licensing rights estimated to be worth an additional 1 billion in royalties. In 2. 01. 6, the wireless local area network Test Bed was chosen as Australias contribution to the exhibition A History of the World in 1. Objects held in the National Museum of Australia. EtymologyeditThe name Wi Fi, commercially used at least as early as August 1. Interbrand. The Wi Fi Alliance had hired Interbrand to create a name that was a little catchier than IEEE 8. Direct Sequence. 1. Phil Belanger, a founding member of the Wi Fi Alliance who presided over the selection of the name Wi Fi, has stated that Interbrand invented Wi Fi as a pun upon the word hi fi. Interbrand also created the Wi Fi logo. The yin yang Wi Fi logo indicates the certification of a product for interoperability. The Wi Fi Alliance used the nonsense advertising slogan The Standard for Wireless Fidelity for a short time after the brand name was created. The name was however never officially Wireless Fidelity. Nevertheless, the Wi Fi Alliance was also called the Wireless Fidelity Alliance Inc in some publications2. IEEEs own website has stated Wi. Fi is a short name for Wireless Fidelity. Non Wi Fi technologies intended for fixed points, such as Motorola Canopy, are usually described as fixed wireless. Alternative wireless technologies include mobile phone standards, such as 2. G, 3. G, 4. G, and LTE. The name is sometimes written as Wi. Fi, Wifi, or wifi, but these are not approved by the Wi Fi Alliance. Wi Fi ad hoc modeeditWi Fi nodes operating in ad hoc mode refers to devices talking directly to each other without the need to first talk to an access point also known as base station. Ad hoc mode was first invented and realized by Chai K. Toh in his 1. 99. Wi Fi ad hoc routing, implemented on Lucent Wave. LAN 8. 02. 1. 1a wireless on IBM Think. Pads over a size nodes scenario spanning a region of over a mile. The success was recorded in Mobile Computing magazine 1. IEEE Transactions on Wireless Communications, 2. ACM SIGMETRICS Performance Evaluation Review, 2. Wi Fi certificationeditThe IEEE does not test equipment for compliance with their standards. The non profit Wi Fi Alliance was formed in 1. As of 2. 01. 0update, the Wi Fi Alliance consisted of more than 3. Java Program Exercises. The Wi Fi Alliance enforces the use of the Wi Fi brand to technologies based on the IEEE 8. IEEE. This includes wireless local area network WLAN connections, device to device connectivity such as Wi Fi Peer to Peer aka Wi Fi Direct, Personal area network PAN, local area network LAN and even some limited wide area network WAN connections. Manufacturers with membership in the Wi Fi Alliance, whose products pass the certification process, gain the right to mark those products with the Wi Fi logo. Specifically, the certification process requires conformance to the IEEE 8. WPA and WPA2 security standards, and the EAP authentication standard. Certification may optionally include tests of IEEE 8. Not every Wi Fi device is submitted for certification. The lack of Wi Fi certification does not necessarily imply that a device is incompatible with other Wi Fi devices. The Wi Fi Alliance may or may not sanction derivative terms, such as Super Wi Fi,3. Access Program Amideast here. US Federal Communications Commission FCC to describe proposed networking in the UHF TV band in the US. IEEE 8. 02. 1. 1 standardedit. Castlevania Nocturne In The Moonlight Psx Iso more. This Netgear Wi Fi router contains dual bands for transmitting the 8. GHz spectrums. The IEEE 8. MAC and physical layer PHY specifications for implementing wireless local area network WLAN computer communication in the 2. GHz frequency bands. They are created and maintained by the IEEELANMAN Standards Committee IEEE 8. The base version of the standard was released in 1. The standard and amendments provide the basis for wireless network products using the Wi Fi brand. While each amendment is officially revoked when it is incorporated in the latest version of the standard, the corporate world tends to market to the revisions because they concisely denote capabilities of their products. As a result, in the market place, each revision tends to become its own standard. A Japanese sticker indicating to the public that a location is within range of a Wi Fi network. A dot with curved lines radiating from it is a common symbol for Wi Fi, representing a point transmitting a signal. To connect to a Wi Fi LAN, a computer has to be equipped with a wireless network interface controller. The combination of computer and interface controller is called a station.