300-430 Question 283
Single answerA wireless client is unable to connect to the corporate Wi-Fi network. The client device is using WPA2-Enterprise for authentication. You verify that other devices can connect to the same SSID without issues. Which troubleshooting step should you perform first to resolve the issue?
- A
Verify the client device's certificate and ensure it is valid.
- B
Reboot the wireless LAN controller to resolve potential configuration issues.
- C
Verify the DHCP scope on the wireless LAN controller.
- D
Check the channel utilization on the 5 GHz band.
Show answer and explanation
Correct answer: A
Explanation
When troubleshooting client connectivity issues with WPA2-Enterprise, it is essential to first verify the client device's certificate. WPA2-Enterprise uses EAP (Extensible Authentication Protocol), which often requires valid certificates for authentication. If other devices are successfully connecting, the issue is likely specific to the client, and validating its certificate is a logical first step.
- A. Correct.
Verifying the client device's certificate is crucial because WPA2-Enterprise relies on certificate-based authentication. If the certificate is invalid or expired, the client will not be able to authenticate.
- B. Incorrect.
Rebooting the wireless LAN controller is an extreme step and is unlikely to resolve a client-specific issue. It should only be used as a last resort after isolating the problem.
- C. Incorrect.
Verifying the DHCP scope is not relevant at this stage because the client cannot authenticate. DHCP comes into play only after successful authentication.
- D. Incorrect.
Checking the channel utilization is not specific to the client's inability to connect. High channel utilization may cause performance issues but does not directly affect authentication.