单项选择题

You work as a network technician at Company. Please study the exhibit carefully. In this  
Company wireless network, the LAP (lightweight access point) attempts to register to a WLC  (Wireless LAN Controller). 
What kind of message is transmitted?()

A. The lightweight access point will send Layer 2 and Layer 3 Lightweight Access Point (LWAPP)  mode discovery request messages at the same time.
B. The lightweight access point will send Layer 3 Lightweight Access Point (LWAPP) mode  discovery request messages only.
C. The lightweight access point will send Layer 2 Lightweight Access Point (LWAPP) mode
D.iscovery request messages. If the attempt fails, the LAP will try Layer 3 LWAPP WLC discovery.  D. The lightweight access point will send Layer 2 Lightweight Access Point (LWAPP) mode  discovery request messages only.

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