Wi-Fi Enabled Device:
A device which can connect to the Internet via wireless networks around it (Access Points, Hotspots) such as personal computer, video game console, mobile phone, MP3 player or personal digital assistant.
Wi-Fi Hostspots:
A wireless network which is to be used for anyone having a Wi-Fi enabled device and who 1) is within the range of the network 2) is allowed to use the Hotspot.
Free Wi-Fi Hotspots:
Some companies provide Wi-Fi free within their range.
Ad-hoc Mode in Wi-Fi communications (Client to Client):
Devices can communicate with each other directly without a router for example a Wi-Fi enabled laptop can communicate directly with another Wi-Fi enabled laptop.
In this mode, no router or access point is needed, miracle!
This mode is mainly used with multiplayer handheld game consoles, digital cameras.
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