Which two statements about virtual interfaces on a WLC are true? (Choose two.)
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A. B. C. D.AC.
Virtual interfaces on a Wireless LAN Controller (WLC) are logical interfaces that allow the WLC to communicate with various network components, such as wireless clients, wired clients, and network infrastructure devices. The virtual interfaces have a unique IP address and can provide various services, such as DHCP, RADIUS, and web authentication.
The two true statements about virtual interfaces on a WLC are:
A. A virtual interface serves as the redirect address for the web authentication login page:
When a wireless client connects to a wireless network with web authentication enabled, the client is redirected to a login page where they are prompted to enter their credentials. The virtual interface on the WLC serves as the redirect address for this login page. When the client connects to the wireless network and tries to access any web page, the WLC intercepts the request and redirects the client to the login page using the virtual interface IP address.
C. A virtual interface acts as the DHCP server placeholder for wireless clients that obtain their IP address from a DHCP server:
When a wireless client connects to a wireless network, it needs an IP address to communicate on the network. The WLC can act as a DHCP server and provide IP addresses to wireless clients. The virtual interface on the WLC serves as the DHCP server placeholder for the wireless clients. The WLC receives DHCP requests from wireless clients and assigns them an IP address from a DHCP pool configured on the WLC.
Option B is false because a DNS host name is not mandatory for a virtual interface. The virtual interface can be configured with just an IP address and subnet mask.
Option D is also false because a virtual interface does not act as a RADIUS proxy. A RADIUS proxy is a separate device that forwards authentication requests to a RADIUS server on behalf of wireless clients. However, the WLC can act as a RADIUS server and authenticate wireless clients using the RADIUS protocol.
In summary, virtual interfaces on a WLC serve various purposes, including providing DHCP services and acting as the redirect address for the web authentication login page. They do not require a DNS hostname and do not act as RADIUS proxies.