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【多选题】

Which two differentiators make RSTP the preferred protocol for preventing Layer 2 loops in aswitched network environment?（） (Choose two.)

A、Features such as UplinkFast and BackboneFast are compatible with RSTP.

B、An RSTP that is based on Cisco products generally performs better than the Cisco proprietary 802.1D enhancements.

C、Cisco proprietary enhancements are not transparent.

D、Information about port roles is sent to all switches.

E、RSTPs that are based on Cisco products require no additional configuration.

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