14 Nov 09 Some details about Wi-Fi or Wireless Fidelity mobile computing

Wi-Fi is the abbreviated form of Wireless Fidelity. It stands for a group of wireless networking technologies, more particularly denoted as any form of 802.11 network that incorporates 802.11a and 802.11b dual band. The association named as Wi-Fi Alliance supervises Wi-Fi benchmarks and authentications.

In the past, the expression Wi-Fi was applied just instead of the 2.4 GHz 802.11b benchmark. It became well loved quite soon with Wi-Fi hotspots all over the United States.

These benchmarks are applied globally and permit users who have Wi-Fi capable gadgets like PDAs (Personal Digital Assistants) and laptops to link from any place that has a Wi-Fi capable access point.

Wireless Fidelity technology would shortly be as widespread as telephone lines and electrical outlets are in one or two years. It increases expediency and provides efficiency enhancements for mobile workers even they are away from their offices.

Wireless Fidelity is frequently applied for Internet connectivity. You can access the Internet from any place applying Wi-Fi provided there is Wi-Fi backup in that locality. Wireless Fidelity functions on the theory of radio waves. Business tourists can apply Wireless Fidelity devices in Internet cafes, airports, shopping malls as well as supporting hotels throughout the world.

Both the 802.11a and 802.11b technologies have the capacity of 54 Mbps speed. 802.11a has extra capacities.

802.11b is the most familiar standard and can send at 11 Mbps. But, Wireless Fidelity technology is gradually developing in terms of speed.

How does Wireless Fidelity function?

Wireless Fidelity functions on the theory of electromagnetic waves. These waves are sent from antennae and Wi-Fi handsets catch the signals. As soon as a Wi-Fi supported gadget gets into the ambit of a Wi-Fi network, a wireless connection is generated. Laptops normally have Wi-Fi connectivity as inbuilt Wi-Fi cards. On certain occasions, you might have to log in by username and password to get accessibility to the Wireless Fidelity Network.

How safe is Wireless Fidelity?

Wireless Fidelity has some security concerns. WEP or Wired Equipment Privacy is the technology that is applied in the data link and physical layers of the network to protect Wi-Fi communications. But, as the data passes through electromagnetic waves, it might be simple for a spy to get accessibility to the communications. Wireless Fidelity is frequently secured by secret and shared keys that are coded. But, you have to keep in mind that the keys should be changed frequently.

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