350-401 Question #469: Real Exam Question with Answer & Explanation

Question

An engineer must update the local web authentication details on a Cisco 5520 WLC. The engineer has one active SSID configured for web authentication and plans to update the virtual interface with a nonroutable IP address. Which command must the engineer apply?

Options

• Aconfig wlan create wlan_idname
• Bconfig interface address virtual 1.1.1.1
• Cconfig interface address dynamic-interface virtual 192.0.2.1
• Dconfig interface address virtual 192.0.2.1

Explanation

To configure the virtual interface on a Cisco WLC, specifically for local web authentication, the config interface address virtual command followed by the desired non-routable IP address is used.

Common mistakes.

• A. config wlan create wlan_idname is used to create a new WLAN (SSID) and is not related to configuring the virtual interface's IP address.
• B. config interface address virtual 1.1.1.1 uses a routable public IP address which is generally not recommended for the virtual interface; the 192.0.2.1 range is specifically reserved for documentation and examples and is commonly used for this non-routable purpose.
• C. config interface address dynamic-interface virtual 192.0.2.1 incorrectly includes dynamic-interface. The virtual interface is a distinct, static interface, not a dynamic one, and the correct command does not include dynamic-interface.

Concept tested. Cisco WLC virtual interface configuration

Reference. https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-5/config-guide/b_cg85/local_web_authentication.html

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