200-301 Question 133
Single answerA network engineer is troubleshooting a wireless network issue where users are experiencing poor connectivity in a specific section of a building. After reviewing the wireless access point's settings, the engineer notices that the RF signal strength is set to maximum, but interference from other devices in the 2.4 GHz band is high. What should the engineer do to improve connectivity?
- A
Reduce the RF signal strength and move the access point closer to the affected area
- B
Switch the access point to use the 5 GHz frequency band
- C
Increase the RF signal strength to overcome interference
- D
Deploy additional access points on the same 2.4 GHz channel in the affected area
Show answer and explanation
Correct answer: B
Explanation
The 2.4 GHz frequency band is often congested due to interference from devices such as microwaves, Bluetooth devices, and neighboring wireless networks. Switching to the 5 GHz band offers significant advantages, including a wider range of channels and less interference, making it an optimal solution for improving connectivity in this scenario.
- A. Incorrect.
Reducing the RF signal strength and moving the access point closer may help in some cases but does not address the root issue of interference in the 2.4 GHz band. It also risks reducing coverage in other areas.
- B. Correct.
Switching to the 5 GHz band avoids the interference issues common in the 2.4 GHz band due to its relatively less crowded spectrum and better performance in environments with high interference.
- C. Incorrect.
Increasing the RF signal strength may temporarily improve connectivity but will not resolve the interference issue. It could also cause additional interference with adjacent wireless networks.
- D. Incorrect.
Deploying additional access points on the same 2.4 GHz channel can worsen the interference problem due to co-channel interference, further degrading the network performance.