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单选题
Wh.ch version of spanning tree is recommended for the enterprise campus？（）
A
CST
B
MST
C
STP
D
PVST+
E
PVRST+
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单选题Which version of spanning tree is recommended for the enterprise campus?（）A
CSTB
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STPD
PVST+E
RPVST+
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CSTB
MSTC
STPD
PVST+E
PVRST+
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多选题Which two of the following values does STP take into consideration when it elects the root bridge?（）AThe BPDU version numberBThe access layer bridge settingCThe Bridge IDDThe spanning-tree update numberEThe bridge priorityFThe VLAN number
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