CompTIA A+ 220-901

Answer: C - If a user is experiencing slow transfer speeds and intermittent network drops on her Wi-Fi network, you might suggest changing the radio channel as a way to mitigate the problem.

Key Takeaway: Many devices use the same band of radio signal-and that band is broken into several channels (remember in cop movies when the agents switch to a “secure channel”). Sometimes by switching the channel to a different one, you can avoid interference on the more commonly used Wi-Fi channels. Changing the SSID, security type, and using Mac filtering may help with security, but they shouldn’t have a direct effect on performance.