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Wireless Technology is an alternative to Wired Technology, which is commonly used, for connecting devices in wireless mode. Wi-Fi Network connect computers to each other, to the internet and to the wired network. The wifi Network works like the basic concept of the Walkie talkies.A Wi-Fi hotspot is created by installing an access point to an internet connection.An access point acts as a base station. When Wi-Fi enabled device encounters a hotspot the device can then connect to that network wirelessly.A single access point can support up to 30 users and can function within a range of 100 – 150 feet indoors and up to 300 feet outdoors.Many access points can be connected to each other via Ethernet cables to create a single large network.
Operational advantages

Wi-Fi allows local area networks (LANs) to be deployed without wires for client devices, typically reducing the costs of network deployment and expansion. Spaces where cables cannot be run, such as outdoor areas and historical buildings, can host wireless LANs.

Wireless network adapters are now built into most laptops. The price of chipsets for Wi-Fi continues to drop, making it an economical networking option included in even more devices. Wi-Fi has become widespread in corporate infrastructures.

Different competitive brands of access points and client network interfaces are inter-operable at a basic level of service. Products designated as "Wi-Fi Certified" by the Wi-Fi Alliance are backwards compatible. Wi-Fi is a global set of standards. Unlike mobile phones, any standard Wi-Fi device will work anywhere in the world.

Wi-Fi is widely available in more than 220,000 public hotspots and tens of millions of homes and corporate and university campuses worldwide.[35] The current version of Wi-Fi Protected Access encryption (WPA2) is considered secure, provided a strong passphrase is used. New protocols for Quality of Service (WMM) make Wi-Fi more suitable for latency-sensitive applications (such as voice and video), and power saving mechanisms (WMM Power Save) improve battery operation.
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