During controller discovery, which message does an AP send to the WLC AP-Manager interface?
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Correct answer: Discovery request.
Why this is the answer
During controller discovery, an Access Point (AP) sends a Discovery Request message to the Wireless LAN Controller (WLC) AP-Manager interface. This message initiates the CAPWAP (Control and Provisioning of Wireless Access Points) tunnel establishment process. The AP uses this request to find available WLCs it can join. The WLC then responds with a Discovery Response, listing its available AP-Manager interfaces. DHCP Request and DHCP Discover are used by clients to obtain IP addresses from a DHCP server, not by an AP to find a WLC.
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