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OSI（开放系统互联）参考模型的最底层是（ ）。
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OSI（开放系统互联）参考模型的最底层是（ ）。
A、网络层
B、传输层
C、物理层
D、应用层
时间：2022-04-23 15:11
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天津
安徽
山东
北京
军转干部
浙江
湖南
辽宁
重庆
答案解析
C
OSI（开放系统互联）参考模型分为七层，从低到高依次为物理层、数据链路层、网络层、传输层、会话层、表示层和应用层。最底层应该是物理层。因此C项正确。
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