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Which two of these statements regarding RSTP are correct? ()

题目

A.RSTP cannot operate with PVST+.

B.RSTP defines new port roles.

C.RSTP defines no new port states.

D.RSTP is a proprietary implementation of IEEE 802.1D STP.

E.RSTP is compatible with the original IEEE 802.1D STP.

参考答案
参考答案:B, E