300-430 Question 263
Single answerYou are managing a corporate wireless network and notice inconsistent client performance in a specific area. After conducting a spectrum analysis, you identify an RF interferer operating on the same 2.4 GHz band as your network. What is the BEST action you can take to mitigate this interference?
- A
Switch the affected access points to use a 5 GHz frequency band.
- B
Increase the transmit power of the access points operating in the affected area.
- C
Enable Dynamic Frequency Selection (DFS) on the access points.
- D
Manually configure the access points to operate on a non-overlapping 2.4 GHz channel.
Show answer and explanation
Correct answer: A
Explanation
RF interference in the 2.4 GHz band is a common issue due to the limited number of non-overlapping channels and the prevalence of interfering devices like microwaves, Bluetooth devices, and cordless phones. Switching to the 5 GHz frequency band avoids the interference altogether and provides more channels for improved performance. This makes it the best solution in this scenario.
- A. Correct.
Switching to the 5 GHz frequency band is the best solution because it avoids the 2.4 GHz band entirely, where the RF interference is occurring. The 5 GHz band also has more non-overlapping channels and less congestion, providing better performance.
- B. Incorrect.
Increasing the transmit power does not mitigate interference. It could exacerbate the issue by causing more co-channel interference and reducing overall network performance.
- C. Incorrect.
Dynamic Frequency Selection (DFS) is used to detect and avoid radar signals on 5 GHz channels, not to manage interference in the 2.4 GHz band.
- D. Incorrect.
Manually configuring non-overlapping channels in the 2.4 GHz band may help in some cases, but it does not eliminate the RF interferer and is not as effective as switching to the 5 GHz band.