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● OSI模型中物理层和数据链路层功能与TCP/IP 模型中的 （56） 功能相同。以太网工作在TCP/IP 模型的 （57） 。
（56）
A．接口层
B．网络层
C．传输层
D．应用层
（57）
A．接口层
B．网络层
C．传输层
D．应用层

A.接口层
B.网络层
C.传输层
D.应用层
E.接口层
F.网络层
G.传输层
H.应用层


【参考答案】

A,A
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