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Two systems with wireless connectivity can connect by
ad hoc without a router. You do not need to use your cell phone either. An access point is a device that allows wireless communication devices to connect to an exisiting wireless network. Wireless "hot spots" such as Starbucks cafes and other businesses use access points so customers can connect wirelessly while in their store. Here is a more complete description of
both of these.
Last Answered:
Dec 16 2008 8:57 PM GMT by Technochic 
40210 pts.