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- 单项选择题The network administrator has discovered that the power supply has failed on a switch in the company LAN and that the switch has stopped functioning. It has been replaced with a Cisco Catalyst 2950 series switch. What must be done to ensure that this new switch becomes the root bridge on the network?（）
A、Lower the bridge priority number.
B、Change the MAC address of the switch.
C、Increase the VTP revision number for the domain.
D、Lower the root path cost on the switch ports.
E、Assign the switch an IP address with the lowest value.
- A
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