单选题You have an SRX Series Layer 2 enforcer providing 802.1X authentication for connected endpoints. Your security policy requires that users who fail their authentication be placed in a specific VLAN.On the Layer 2 enforcer, at the [edit protocols dot1x a

You have an SRX Series Layer 2 enforcer providing 802.1X authentication for connected endpoints. Your security policy requires that users who fail their authentication be placed in a specific VLAN.On the Layer 2 enforcer, at the [edit protocols dot1x authenticator interface] hierarchy for each participating interface, what provides this functionality?（）