Refer to the exhibit.

According to the FortiSwitch Administration Guide, “If a device does not support 802.1X authentication, you can configure the switch to assign the device to an onboarding VLAN. The onboarding VLAN is a separate VLAN that you can use to provide limited network access to non-802.1X devices.” Therefore, option C is true because it describes the behavior of FortiSwitch when the security profile shown in the exhibit is assigned to all ports. Option A is false because FortiSwitch can authenticate multiple devices connected to the same port using MAC-based or MAB-EAP modes. Option B is false because FortiSwitch will not try to authenticate non-802.1X devices using the device MAC address as the username and password, but rather use MAC authentication bypass (MAB) or EAP pass-through modes. Option D is false because all EAP messages will be terminated on FortiGate, not FortiSwitch, when using 802.1X authentication.