History and Types of Wi-Fi
In the 1980s, a technology designed for wireless cash registers called WaveLAN was developed and shared with the Institute of Electrical and Electronics Engineers group responsible for networking standards, known as Committee 802. This technology was further developed during the 1990s until the committee published standard 802.11 in 1997. The initi
Wi-Fi Hardware
Wireless broadband routerscommonly used in home networks serve as Wi-Fi access points (along with other functions). Similarly, public Wi-Fi hotspots use one or more access points installed inside the coverage area. Small Wi-Fi radios and antennas are embedded inside smartphones, laptops, printers, and many consumer gadgets enabling these devices to
Wi-Fi Hotspots
Hotspots are a kind of infrastructure mode network designed for public or metered access to the internet. Many wireless hotspotsuse special software packages to manage user subscriptions and limit internet access accordingly.
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Wi-Fi Network Protocols
Wi-Fi consists of a data link layer protocol that runs over any of several physical layer links. The data layer supports a special Media Access Control protocol that uses collision avoidance techniques (technically called Carrier Sense Multiple Access with Collision Avoidance) to help handle many clients on the network communicating at once. Wi-Fi
Common Problems with Wi-Fi Networks
No technology is perfect, and Wi-Fi possesses its share of limitations. Common issues with Wi-Fi networks include: 1. Security: Network traffic sent across Wi-Fi networks passes through open air, making it prone to snooping. Several kinds of Wi-Fi security technologies have been added to Wi-Fi over the years to help address this problem, although s