Wi - Fi .
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It was because of his efforts in 1895, the 19th century thus saw the birth of wireless communications in the form of telegraphy or radio.Today's wireless communication has become increasingly popular in the computing industry as well as in our daily life such as listening to the radio, operating TV with remote, locking and unlocking cars, mobile phone, and using wireless zones to access internet facility. In addition to this the adoption of wireless networks has rapidly increased the mobility of the professionals, to access information and services via electronic media, traveling around the world without taking into the account their geographic position. Within the past two decades, mobile hosts and wireless networking hardware are becoming widely available, and extensive work has been done recently in integrating these elements into traditional networks such as the Internet.
Basic reason for avoiding the wired networks are hassles, expenses and delays, even the enterprises and homeowners are avoiding installing them. Along with increase in throughput, wireless networks remain unlicensed and affordable. This has further helped their exponential growth in businesses, homes, communities and open spaces. That's why, wireless networks have taken the world by storm and high-speed Internet facility is enjoyed by travelers all over the places worldwide. There are currently two variations of mobile wireless networks. The first is known as infrastructure networks and the second one is known the infrastructure less mobile network, commonly known as ad-hoc network.This infrastructure will be composed of wired base stations and fixed wireless relays.
Base stations act as gateways between the Internet and the wireless network. In these networks a mobile unit connects to nearest base station which is available within its communication radius, and communicates with it. Typical applications of this type of network include office wireless local area networks (WLANs). Whereas, a mobile ad hoc network is an autonomous connected system of mobile hosts and routers of wireless links which are free to move around randomly and organize themselves arbitrarily. While wireless networks are well known in the home user markets, commonly reported and easily broken security measures in the standard security system have diminutive effect on WLAN deployment rate. However, there may be many misconceptions about wireless networks being less secure than their wired counter parts, the upsurge in WLANs deployments can be gauzed from the fact that a research fact put up by the Gartner Group gauzed from the fact that a research fact put up by the Gartner Group which in nutshell says that with current shipments on enroute WLAN deployments to double in two years.
Such mammoth growth can be attributed with:
- Companies are enjoying the benefits of rapid deployment
- Lower infrastructure costs
- Improved productivity
With rushing implementations comes a caution that says there are security issues that should be identified and addressed. Now the big question is of security. It is true that increasing popularity of any technology is directly proportional to increasing security attacks. With the wireless nature of WLANs, the security issues aggravate and the reason for that lies in the open nature of transmission of wireless networks and lack of infrastructure. Existing methods to create wireless network The term wireless networking refers to technology that enables two or more computers to communicate using standard network protocols, but without network cabling.
The technology, with the emergence of cross vendor industry standards such as IEEE 802.11, has shaped a number of popular and cost-effective wireless solutions for business and schools as well as sophisticated applications where installing wired network is impossible, such as in warehousing or point-of-sale handheld equipment. Figures are representation for various types of wireless networks.