Wi-Fi refers to Wireless Fidelity, lets you to connect to the Internet without a direct line from your PC to the ISP.
You need the following for Wi-Fi to work:
Transmitting computer data without wires makes your data especially susceptible to hackers, computer uses who can intercept your connection and steal your data. If you decide to use Wi-Fi at home, then be sure that the network you set up is security-enabled.
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