... but without the string. People can understand how it works with the string, but without the string they are confused. Basically, wireless networks use radio signals to accomplish what copper cable or fibber optic accomplishes in a wired network. The picture below is of a basic wireless LAN. It includes desktop PCs and Laptops as well as a wired network as the original Internet ... within a personal operating space (POS). A POS is the space surrounding a person, up to a distance of 10 meters. Currently, the two key WPAN technologies are Bluetooth and infrared light. Bluetooth is a cable ...

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