300-430 Question 282
Select 3A network engineer has received complaints from multiple users about intermittent connectivity issues on a specific SSID in a corporate wireless network. Upon investigation, the engineer notices that affected clients are failing to obtain IP addresses from the DHCP server. Which of the following actions should the engineer take to troubleshoot and resolve the issue?
- A
Verify the VLAN assignment on the WLAN interface to ensure it matches the DHCP scope configuration.
- B
Check the access point's power settings to ensure sufficient signal strength for client devices.
- C
Inspect the DHCP server logs for any errors or exhaustion of the IP address pool.
- D
Ensure the WLAN is configured with WPA3-Personal security to enhance client authentication.
- E
Verify that the APs servicing the affected area are correctly joined to the wireless controller.
Show answer and explanation
Correct answers: A, C, E
Explanation
When troubleshooting client connectivity issues related to DHCP, it is essential to verify that the VLAN configuration on the WLAN matches the DHCP scope, check the DHCP server for errors or exhausted IP address pools, and ensure that the access points in the affected area are correctly connected to the wireless controller. These steps address the primary causes of DHCP failures, ensuring clients can successfully obtain IP addresses and connect to the network.
- A. Correct.
Verifying the VLAN assignment on the WLAN interface ensures that the VLAN used by the SSID is properly mapped to the DHCP scope. A mismatch could prevent clients from obtaining IP addresses.
- B. Incorrect.
While access point power settings are important for signal strength, they are not directly related to DHCP issues faced by clients trying to connect.
- C. Correct.
Inspecting the DHCP server logs can reveal issues such as IP address pool exhaustion or misconfiguration that might prevent clients from obtaining IP addresses.
- D. Incorrect.
While WPA3-Personal security enhances authentication, it is unrelated to DHCP issues and would not resolve IP address assignment problems.
- E. Correct.
If the APs are not properly joined to the wireless controller, they cannot relay DHCP requests to the network, which could cause client connectivity issues.