单选题When is a switched network that is running the Spanning Tree Protocol considered to be fully converged?（）Awhen all switches have the same BID as the root switchBwhen all switches have received the MAC address of each neighboring switchCwhen every enabled switch port has been assigned a unique identifierDwhen every operating switch port is in either the blocking or forwarding stateEwhen all switches are in either client, server, or transparent mode
单选题
When is a switched network that is running the Spanning Tree Protocol considered to be fully converged?（）
A
when all switches have the same BID as the root switch
B
when all switches have received the MAC address of each neighboring switch
C
when every enabled switch port has been assigned a unique identifier
D
when every operating switch port is in either the blocking or forwarding state
E
when all switches are in either client, server, or transparent mode
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