单选题
When is a switched network that is running the Spanning Tree Protocol considered to be fully converged?（）
发布日期：2020-04-11
when all switches have the same BID as the root switch
when all switches have received the MAC address of each neighboring switch
when every enabled switch port has been assigned a unique identifier
when every operating switch port is in either the blocking or forwarding state
when all switches are in either client, server, or transparent mode
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