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多选题
Which two statements are true about 802.1s？（）
A
802.1s supports a reduced number of spanning-tree instances.
B
802.1s has better convergence times than 802.1w.
C
802.1s does not support load balancing over the same physical topology.
D
The CPU utilization for 802.1s is lower than the CPU utilization for 802.1w.
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