Which action mitigates intermittent Wi‑Fi issues caused by interference?

Which action mitigates intermittent Wi‑Fi issues caused by interference?

• A. Increase transmit power on the router
• B. Disable SSID broadcast
• C. Choose a less congested channel
• D. Replace Ethernet cable to AP

Answer: (C)

Interference on Wi‑Fi happens when many networks or devices share the same radio channel, causing collisions and retries that show up as intermittent connectivity. The most effective way to reduce this is to choose a channel with less traffic, so fewer nearby networks contend for the same airwaves. Setting the router to a less congested channel, or letting it auto-select a clear channel, helps the access point operate on a cleaner part of the spectrum and reduces interruptions. In the 2.4 GHz band, there are only a few non-overlapping channels, so avoiding the crowded ones and picking a quieter one makes a noticeable difference. Increasing transmit power can worsen interference with others and doesn’t solve the root problem; disabling SSID broadcast doesn’t impact radio noise; and replacing the Ethernet cable to the AP addresses wired connectivity, not wireless interference.

Interference on Wi‑Fi happens when many networks or devices share the same radio channel, causing collisions and retries that show up as intermittent connectivity. The most effective way to reduce this is to choose a channel with less traffic, so fewer nearby networks contend for the same airwaves. Setting the router to a less congested channel, or letting it auto-select a clear channel, helps the access point operate on a cleaner part of the spectrum and reduces interruptions. In the 2.4 GHz band, there are only a few non-overlapping channels, so avoiding the crowded ones and picking a quieter one makes a noticeable difference. Increasing transmit power can worsen interference with others and doesn’t solve the root problem; disabling SSID broadcast doesn’t impact radio noise; and replacing the Ethernet cable to the AP addresses wired connectivity, not wireless interference.