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The TCP/IP stack is a complete set of networking protocols. The OSI Model was meant to be a standardized way of connecting devices together,and most protocols have some direct correlation to the OSI Model. The OSI Model has 7 layers,the fourth layer is called( ).

A. physical layer

B. data link layer

C. application layer

D. transport layer

参考答案: D

详细解析:

TCP/IP协议栈是一种网络协议实现。OSI模型是用来进行设备间连接标准化的一种模型。OSI模型包含7层,第四层是传输层。

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