200-301 Question 135
Select 3A network engineer is troubleshooting a wireless network experiencing intermittent connectivity issues. After investigating, they find that the wireless access point is operating on a 2.4 GHz frequency and is located in a crowded area with multiple nearby Wi-Fi networks. Which of the following actions could help resolve the issue caused by RF interference?
- A
Move the wireless access point to a less crowded area.
- B
Switch the wireless access point to use a 5 GHz frequency band.
- C
Increase the transmit power of the access point to overcome interference.
- D
Change the wireless channel to one that is less congested.
- E
Disable WPA2 encryption to reduce processing overhead.
Show answer and explanation
Correct answers: A, B, D
Explanation
RF interference in the 2.4 GHz band is a common issue in crowded wireless environments. Effective solutions include moving the access point to reduce interference, switching to the 5 GHz band for less congestion, and selecting a less congested channel. Increasing transmit power or disabling encryption are ineffective and could create additional problems.
- A. Correct.
Moving the wireless access point to a less crowded area can reduce RF interference from nearby networks, improving connectivity.
- B. Correct.
Switching to the 5 GHz frequency band can help avoid interference, as it typically has more available channels and less congestion compared to 2.4 GHz.
- C. Incorrect.
Increasing the transmit power is not an effective solution for RF interference, as it may cause additional interference for nearby devices and reduce overall network performance.
- D. Correct.
Changing to a less congested channel can mitigate interference from overlapping networks in the 2.4 GHz frequency band.
- E. Incorrect.
Disabling WPA2 encryption has no impact on RF interference and would compromise network security.