单项选择题
Which switch is the root bridge for VLAN 1?()
A.Sw-DS1 B.Sw-AC1 C.Sw-AC2 D.Sw-AC3
A.Fa0/1 B.Fa0/3 C.Fa0/4 D.Fa0/8 E.Fa0/9 F.Fa0/12
A.Fa0/1 B.Fa0/3 C.Fa0/6 D.Fa0/8 E.Fa0/9 F.Fa0/12