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Update 第 3 章 数据链路层.md

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圣三一
2019-08-25 15:26:27 +08:00
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计算机网络/第 3 章 数据链路层/第 3 章 数据链路层.md
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@@ -141,4 +141,4 @@ FCS ：帧检验序列，使用的是 CRC 检验方法；
## 集线器在转发帧时，不对传输媒体进行检测。
网桥在转发帧之前必须执行 CSMA/CD 算法。
*XMind: ZEN - Trial Version*
![picture](https://github.com/SSHeRun/CS-Xmind-Note/blob/master/%E8%AE%A1%E7%AE%97%E6%9C%BA%E7%BD%91%E7%BB%9C/%E7%AC%AC%203%20%E7%AB%A0%20%20%E6%95%B0%E6%8D%AE%E9%93%BE%E8%B7%AF%E5%B1%82/%E7%AC%AC%203%20%E7%AB%A0%20%20%E6%95%B0%E6%8D%AE%E9%93%BE%E8%B7%AF%E5%B1%82.png)