单选题Why does RSTP have a better convergence time than 802.1D？（）Ait is newerBit has smaller timersCit has less overheadDit is not timer-based
单选题
Why does RSTP have a better convergence time than 802.1D？（）
A
it is newer
B
it has smaller timers
C
it has less overhead
D
it is not timer-based
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解析：
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