What does the LAP send when multiple WLCs respond to the CISCO-CAPWAP-CONTROLLER.localdomain hostname during the CAPWAP discovery and join process?
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A. B. C. D.A.
During the CAPWAP discovery and join process, when an LAP (Lightweight Access Point) sends a discovery request using the CISCO-CAPWAP-CONTROLLER.localdomain hostname, multiple WLCs (Wireless LAN Controllers) may respond. In this scenario, the LAP follows a specific behavior to determine which WLC to join.
Option A, unicast discovery request to the first WLC that resolves the domain name, is not the correct answer. This behavior is not used because multiple WLCs may respond to the hostname, and the LAP needs to find the best WLC to join based on various criteria.
Option B, broadcast discovery request, is also not the correct answer. Although broadcast discovery can be used to discover WLCs in the network, it is not the behavior used in this scenario when the LAP is trying to join a specific WLC.
Option C, join request to all the WLCs, is not the correct answer either. This behavior is not used because it is inefficient and could overload the WLCs with unnecessary join requests.
Option D, unicast discovery request to each WLC, is the correct answer. When multiple WLCs respond to the CISCO-CAPWAP-CONTROLLER.localdomain hostname, the LAP sends a unicast discovery request to each WLC that responded, one at a time. The LAP evaluates the responses based on various criteria, such as the WLC's load, capacity, and proximity. Once the LAP determines the best WLC to join, it sends a join request to that WLC.
In summary, the correct answer is D, the LAP sends a unicast discovery request to each WLC that responded to the CISCO-CAPWAP-CONTROLLER.localdomain hostname during the CAPWAP discovery and join process.