单选题Which command enables RSTP on aswitch?（）Aspanning-tree mode rapid-pvstBspanning-tree uplinkfastCspanning-tree backbonefastDspanning-tree mode mst
单选题
Which command enables RSTP on aswitch?（）
A
spanning-tree mode rapid-pvst
B
spanning-tree uplinkfast
C
spanning-tree backbonefast
D
spanning-tree mode mst
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