F
- FCC
Federal Communications Commission. See www.fcc.gov for more information.
- firewall
A firewall is a blocking mechanism—either hardware, software, or both—that blocks intruders from accessing a network or individual computer.
- free radio spectrum
Bands of the radio spectrum, such as 2.4GHz and 5GHz, that do not require a license from the FCC. Wi-Fi uses these bands for its transmissions, as do other household appliances such as cordless phones and microwaves.
- frequency
The oscillations, or movement from peak to trough, of the electromagnetic wave created by a radio transmission.
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