Which layer of the OSI reference model uses the hardware address of a device to ensure message delivery to the proper host on a LAN?（）
- A、physical
- B、datalink
- C、network
- D、transport
正确答案:B
答案解析:有
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思科认证考试
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Which layer of the OSI reference model uses the hardware address of a device to ensure message delivery to the proper host on a LAN?（）
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