“`” 参考回答:
四层TCP/IP模型如下:
<img alt=""img"" referrerpolicy=""no-referrer"" src=""https://uploadfiles.nowcoder.com/images/20190313/311436_1552471617097_2C832BB517B9ED772DCA7DCAD9AFBC75"">
其状态转移图如下:
<img alt=""img"" referrerpolicy=""no-referrer"" src=""https://uploadfiles.nowcoder.com/images/20190313/311436_1552471666772_F4FEF3EED170579049D40CE58E343EE4"">
<pre><code> "“`
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