Wi-Fi technology
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Wi-Fi technology of the biggest Tamoor (National University of tissues and Pakistan) October2008 What is Wi-Fi? Wi-Fi is a new technology allows an image from your computer to be transmitted to the projector without saying phone connection and then use the VGA cable to connect the computer and projector for the family no longer needed. Why Wi-Fi? The purpose of Wi-Fi to hide complexity by enabling wireless access to applications, data and media flows. The main aims of Wi-Fi, are as follows: to make access to information easier to ensure interoperability and coexistence between judicial cables and wires, the removal of transformers, adapters, plugs, bolts and connections. How Wi-Fi work? It uses new technology to transfer information across great distances. Simply put, wireless information can be returned up to ten times faster than Bluetooth, and up to six times further than Bluetooth. Wi-Fi networks use radio technologies called IEEE 802. 11b or 802. 11a for transferring data from internet connection to the host computer (eg laptop). These technologies provide wireless connections, fast and reliable to some extent the level of security (to be discussed below). Can use Wi-Fi network to connect computers together with internet and cable networks. Wi-Fi networks operating in the unlicensed 2. 4 and 5 GHz radio teams with 11 MB per second (802. 11b) or 54 Mbps (802. 11a) with the rate of data or products that contain both bands (Dual Band), so that they can make real The main results Networks 10BaseT Ethernet cable is used in many offices elements of Wi-Fi network • Access Point (AFP) – The Associated Press, the transmitter or wireless LAN, “base station” that can be wirelessly connected devices with one or several at a time and one on the Internet. • Wi-Fi card – the wireless signal reception and transmission of information. They may be internal or external. (E g PCMCIA card for laptop computers and projects PC card) • protective measures – firewalls and antivirus software to protect networks from unwanted users and keep the information secure. • • Restrictions interference in the performance degradation to enable • Consumption • High energy limited purpose * Wi-Fi device, such as computer games, mobile phone, MP3 player or PDA can connect to the Internet within a number of wireless network related to the Internet. He appealed to cover one or more interconnected access points – one hot spot – could include a small area like a single room with opaque walls Wireless-or greater by many square miles covered by overlapping access points. There for Wi-Fi technology to create a network of networks * In addition to limiting the use in homes and offices, Wi-Fi can provide access to public hotspots Wi-Fi available free or to subscribers of different service providers. Organizations and businesses such as airports, hotels and restaurants often provide free hotspots to attract or assist clients. Amateur or bodies wishing to provide services or even in promoting business in a given area sometimes provide free Wi-Fi access. Urban-wide Wi-Fi (Muni-Fi), already has more than 300 projects in this process. [2] There are 879 Wi-Fi-based Internet service providers of wireless services in the Czech Republic in May 2008. * Wi-Fi also allows communication in peer-to-peer (wireless network special) mode that allows devices to communicate directly with each other. It may appear useful research contacts in the field of consumer electronics and gaming applications. * Consumer devices used by many Wi-Fi. Among other things, personal computers to network together and connect to the Internet may be portable computers connect to the Internet from any Wi-Fi hotspot and digital cameras can transfer images wirelessly. * You can connect with Wi-Fi in the development of custom hardware for client connections to the client without the router. As a result of recent mining tragedies, and suggests that some tech companies to expand wireless technology anywhere in real time using Wi-Fi networks to determine the miners are trapped underground – a decision that could save lives in the future. And Wi-Fi technology has spread widely within business and industrial sites. In business, like other media, and increase the number of points Wi-Fi access provides redundancy as well as support for fast roaming and increased overall network capacity by using more channels or by selecting the smaller cells. Wi-Fi enables wireless voice applications (VoWLAN or VoIP). Over the years, Wi-Fi applications move to “thin” access points, most of the intelligence network device includes a centralized network, relegating individual access points to the role of just a “wireless” dumb. May be used in outdoor applications, the network topology correctly. You can also Wi-Fi installations in 2007 to provide a secure computer networking gateway, firewall, DHCP server, Intrusion Detection System, and other tasks. The growth of Wi-Fi in some previous years clearly shows, Wi-Fi and the elimination of all other wireless technologies. It could be argued that “the future for Wi-Fi.”