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Which A record type should be configured for access points to resolve the IP address of a wireless LAN controller using DNS?
Correct Answer: D
Access points use DNS to resolve the IP address of a wireless LAN controller. The correct DNS A record type for this purpose is "CISCO-CAPWAP-CONTROLLER.localdomain". This allows the access point to discover controllers through the domain name server (DNS) when the controller is in a different subnet than the access point. When an access point receives an IP address and DNS information from a DHCP server, it contacts the DNS to resolve this specific A record. Upon successful resolution, the access point sends discovery requests to the controllers' IP addresses provided by the DNS. References: Cisco documentation on DNS Server for Wireless LAN Controller Discovery.