解释以太网技术和介质访问控制方法
Explain the technology and media access control method for Ethernet networks
Matsuo Takashi：信息处理系统和认证介质的访问控制方法和计算机程序。
Information providing system and authentication medium access control method and computer program.
Matsuo Takashi：信息处理系统和认证介质的访问控制方法和计算机程序。
Information providing system and authentication medium access control method and computer program.
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