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【单选题】
以下关于令牌环网的描述中,错误的是______A.
在令牌网中节点通过环接口连接成逻辑环形
B.
IEEE802.5标准定义令牌环介质访问控制方法与相应的物理规范
C.
令牌帧中有一位标志令牌的忙/闲,当令牌空闲时节点可以使用该令牌发送数据帧
D.
令牌环网支持优先级服务
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】What does the professor mean when he says this:
A.
He does not want to waste time on something the students already know.
B.
He wants the students to feel comfortable about speaking up in class.
C.
He does not think he needs to go over the topic because it is not critical.
D.
He thinks the students have made a correct assumption about the topic.