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多项选择题Which two of these statements regarding RSTP are correct? （）

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.

  • B,E

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