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8应用协议
tobeavampire的博客
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应用协议

TCP/IP的应用层涵盖了OSI参考模型中第5,6,7层的所有功能，不仅包含了管理通信连接的会话层功能，转换数据格式的表示层功能，还包括与对端主机交互的应用层功能在内的所有功能。

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