200-301 Question 121
Single answerA network engineer is troubleshooting a wireless network experiencing poor connectivity and intermittent disconnections in a high-density office. The office has multiple access points (APs) operating on the 2.4 GHz frequency band. Which wireless principle should the engineer prioritize to resolve the issue?
- A
Reduce channel overlap by configuring non-overlapping channels for the APs
- B
Increase the transmission power of all APs to improve signal strength
- C
Switch to omnidirectional antennas to provide uniform coverage
- D
Implement WPA2 encryption to enhance network security
Show answer and explanation
Correct answer: A
Explanation
In a high-density wireless environment, interference is a key challenge, especially when multiple APs operate in the 2.4 GHz frequency band. By configuring non-overlapping channels (e.g., 1, 6, and 11), the engineer can minimize co-channel and adjacent-channel interference, improving connectivity and performance. Other options, such as increasing power or using omnidirectional antennas, do not address the interference issue and may even exacerbate it.
- A. Correct.
Reducing channel overlap by configuring non-overlapping channels is essential for minimizing co-channel interference, which is a common issue in high-density wireless environments.
- B. Incorrect.
Increasing the transmission power of all APs may lead to greater interference, especially in high-density environments, and is not an effective solution in this scenario.
- C. Incorrect.
Switching to omnidirectional antennas does not address the root cause of the issue, which is interference due to channel overlap.
- D. Incorrect.
Implementing WPA2 encryption enhances network security but does not resolve connectivity or interference issues in a wireless network.