Which of the following statements are true regarding Layer 3 switches？（Choose all that apply.）（）

A.A routed port does not run STP or DTP

B.A routed port is considered to be in a down state if it is not operational at both Layer 1 andLayer 2

C.An SVI is considered to be in a down state if it is not operational at both Layer 1 and Layer 2

D.An SVI is considered to be in a down state only when none of the ports in the correspondingVLAN are active

E.An SVI port does not run 5TP or DTP

F.To create a trunk， an SVI can be logically divided into subinterfaces