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You might wonder how the computer can send and receive data at high speed without becoming garbled nonsense. The key to wireless networking is how it gets around this problem. First, wireless transmissions are sent at very high frequencies, which allows more data to be sent per second. Most wireless connections use a frequency of 2.4 gigahertz (2.4 billion cycles per second) -- a frequency similar to mobile phones and microwave ovens. However, this high frequency produces a wavelength that is very short, which is why wireless networking is effective only over short distances. Wireless networks also use a technique called "frequency hopping." They use dozens of frequencies, and constantly switch among them. This makes wireless networks more immune to interference from other radio signals than if they transmitted on a single frequency. Casino - List of all casino related resources Black Jack - List of black jack resources Poker - List of poker resources Online Poker - List of online poker resources Betting - List of betting resources Lottery - List of lottery resources Craps - List of craps resources Slots - List of slots resources Roulette - List of roulette resources Games - List of games resources Recreation - List of travel/holiday/resort/airline resources Health - List of online pharmacy/hospital/health resources Shopping - List of online shopping/gift resources Business - List of business/finance/loan/mortgage resources Computers - List of computer hardware/software/peripheral resources Internet - List of webhosting/webdesign/internet marketing resources Miscellaneous - List of all other resources not stated above
The final step for a wireless network is to provide internet access for every computer on the network. This is done by a special piece of wireless equipment called an access point. An access point is more expensive than a wireless card for 1 computer, because it contains radios capable of communicating with around 100 computers, sharing internet access among them. Dedicated access points are necessary only for larger networks. With only a few computers, it is possible to use 1 of them as the access point, or to use a wireless router. |
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