200-301 Question 251
Select 4You are reviewing the WLAN configuration on a wireless LAN controller (WLC) to troubleshoot a client connectivity issue. The client reports being unable to connect to the corporate Wi-Fi. Upon inspecting the configuration, you observe the following settings: SSID broadcast is enabled, security is set to WPA2-Enterprise with a RADIUS server, and the VLAN ID is correctly assigned. However, the client device is still unable to connect. Which of the following configuration settings should you check to resolve the issue?
- A
Verify that the RADIUS server is reachable and properly configured.
- B
Ensure that the client device supports the configured WPA2-Enterprise security protocol.
- C
Check if the wireless network is configured to use the correct frequency band (2.4 GHz or 5 GHz).
- D
Confirm that the DHCP server is providing valid IP addresses to clients.
- E
Verify that the SSID is hidden to enhance security.
Show answer and explanation
Correct answers: A, B, C, D
Explanation
Troubleshooting WLAN client connectivity involves verifying essential configuration settings such as authentication (RADIUS server reachability and security protocol compatibility), network compatibility (frequency band), and network services (DHCP). Hiding the SSID is not relevant to resolving connectivity issues and can complicate troubleshooting.
- A. Correct.
If the RADIUS server is unreachable or misconfigured, authentication may fail, preventing the client from connecting.
- B. Correct.
The client device must support the configured security protocol, such as WPA2-Enterprise, to successfully authenticate and associate with the WLAN.
- C. Correct.
If the client device is not compatible with the configured frequency band, it will not be able to detect or connect to the network.
- D. Correct.
A valid IP address is necessary for client connectivity. If the DHCP server is not functioning or misconfigured, the client may fail to obtain an IP address.
- E. Incorrect.
Hiding the SSID does not directly affect connectivity issues and is not recommended as a security measure. It is not related to the problem described.