Explanation
Security profiles on FortiAP devices can use FortiGate subscription to inspect the traffic, such as antivirus, web filtering, application control, and IPS. This feature is called local bridging and it allows the FortiAP to forward traffic to the FortiGate for security inspection before sending it to the destination network. This reduces the bandwidth consumption and latency of tunnel mode SSIDs. References: Secure Wireless LAN Course Description, page 9; [FortiOS 6.4.0 Handbook - Wireless Controller], page 46.

Explanation
The control channel for managing traffic, which is always encrypted by DTLS. l The data channel for carrying client data packets.

Explanation
According to the web search results, the first discovery method used by FortiAP to locate the FortiGate wireless controller in the default configuration is static. This means that the FortiAP sends discovery requests to a preconfigured IP address that the controller owns. This is useful if the FortiAP and the controller are not in the same subnet and other discovery methods will not work. The other discovery methods are used in sequence if the static method fails or is not configured. References: Advanced WiFi controller discovery | FortiAP / FortiWiFi 7.4.0

Explanation
VLAN from the VLAN pool based on a hash of the current number of SSID clients and the number of entries in the VLAN pool.