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單項(xiàng)選擇題

Which of these is true regarding the configuration and application of port access control lists? ()

A.PACLs can be applied in the inbound or outbound direction of a Layer 2 physical interface. 
B.At Layer 2, a MAC address PACL will take precedence over any existing Layer 3 PACL.
C.When you apply a port ACL to a trunk port, the ACL filters traffic on all VLANs present on the trunk port.
D.PACLs are not supported on EtherChannel interfaces.

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