根据STP协议，网桥ID最小的交换机被选举为根网桥，网桥ID由（上题）字节的优先级和6字节的（本题）组成
- A.用户标识
- B.MAC地址
- C.IP地址
- D.端口号
正确答案及解析
正确答案
解析
网桥ID的组成：网桥优先级（2字节）+网桥的MAC地址（6字节）； 优先级取值范围：0~65535； 缺省值：32768，增量倍数4096
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