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ＩＥＥＥ８０２．５标准规范是局域网的标准之一，该网的（Ｔｏｋｅｎ ｒｉｎｇ）的拓扑结构是传输媒体首尾连接的环，媒体访问控制方法是令牌（Ｔｏｋｅｎ），所以叫令牌环网。网上控制各工作站发送数据的是令牌（Ｔｏ－ｋｅｎ也译为通行证，或权标－即掌握发送数据权力的标志
The IEEE802.5 standard is one of the standards of the local area network. The topological structure of the Token ring is a ring connecting the end-to-end of the transmission media. The media access control method is a token and is called Token Ring. To control the sending of data online by workstations is a token (To-ken is also translated as a passport, or token - a flag that grasps the power to send data