300-425 Question 129
Single answerA network engineer is troubleshooting a client’s connectivity issue in a Cisco wireless network. The client is unable to connect to the corporate SSID. Upon investigation, the engineer discovers that the client device is using a static IP address in a different subnet than the wireless network. What is the most likely cause of the issue?
- A
The client device’s static IP address is not compatible with the DHCP scope of the wireless network.
- B
The wireless controller is misconfigured and does not allow static IPs on the corporate SSID.
- C
The client device is unable to authenticate with the RADIUS server due to the static IP configuration.
- D
The static IP address is in a different subnet, preventing the client from communicating with the default gateway.
Show answer and explanation
Correct answer: D
Explanation
The static IP address configured on the client device belongs to a different subnet than the wireless network. This mismatch causes the client to fail in establishing communication with the default gateway, resulting in the inability to connect to the corporate SSID. For successful connectivity, the client’s IP address must align with the subnet of the wireless network.
- A. Incorrect.
This is incorrect because the DHCP scope does not directly affect devices configured with static IPs. Instead, the issue is related to the mismatch between the client’s subnet and the network’s subnet.
- B. Incorrect.
While the wireless controller can impose restrictions, there is no indication in the scenario that such a configuration is in place. The issue lies with the static IP configuration itself.
- C. Incorrect.
RADIUS server authentication typically involves credentials, certificates, or MAC address filtering. Static IP configuration does not directly impact authentication.
- D. Correct.
This is correct because a static IP address in a different subnet prevents the client from communicating with the default gateway, which is required for network connectivity.