多选题Which two are natively included by the IEEE 802.1w standard？（）Ainstances can control a selection of VLANsBload balancingCfast transition to forwarding stateDbackbone，uplink，and portfast （or equivalent）Eroot，loop，and BPDU guard （or equivalent）
多选题
Which two are natively included by the IEEE 802.1w standard？（）
A
instances can control a selection of VLANs
B
load balancing
C
fast transition to forwarding state
D
backbone，uplink，and portfast （or equivalent）
E
root，loop，and BPDU guard （or equivalent）
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