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Snailclimb merged 2 commits into from
Oct 27, 2022
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Update osi&tcp-ip-model.md #1854

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85ed706
Update osi&tcp-ip-model.md
Orion2tap Oct 27, 2022
4f49851
Update tcp-connection-and-disconnection.md
Orion2tap Oct 27, 2022
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2 changes: 1 addition & 1 deletion docs/cs-basics/network/osi&tcp-ip-model.md
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Expand Up @@ -80,7 +80,7 @@ OSI 七层模型虽然失败了，但是却提供了很多不错的理论基础

这里强调指出，网络层中的“网络”二字已经不是我们通常谈到的具体网络，而是指计算机网络体系结构模型中第三层的名称。

互联网是由大量的异构（heterogeneous）网络通过路由器（router）相互连接起来的。互联网使用的网络层协议是无连接的网际协议（Intert Prococol）和许多路由选择协议，因此互联网的网络层也叫做 **网际层** 或 **IP 层**。
互联网是由大量的异构（heterogeneous）网络通过路由器（router）相互连接起来的。互联网使用的网络层协议是无连接的网际协议（Internet Prococol）和许多路由选择协议，因此互联网的网络层也叫做 **网际层** 或 **IP 层**。

![网络层重要协议](https://guide-blog-images.oss-cn-shenzhen.aliyuncs.com/github/javaguide/cs-basics/network/nerwork-layer-protocol.png)

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4 changes: 2 additions & 2 deletions docs/cs-basics/network/tcp-connection-and-disconnection.md
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Expand Up @@ -28,7 +28,7 @@ tag:
2. **第二次握手** ：Client 确认了：自己发送、接收正常，对方发送、接收正常；Server 确认了：对方发送正常，自己接收正常
3. **第三次握手** ：Client 确认了：自己发送、接收正常，对方发送、接收正常；Server 确认了：自己发送、接收正常，对方发送、接收正常

三次握手就能确认双发收发功能都正常，缺一不可。
三次握手就能确认双方收发功能都正常，缺一不可。

更详细的解答可以看这个：[TCP 为什么是三次握手，而不是两次或四次？ - 车小胖的回答 - 知乎](https://www.zhihu.com/question/24853633/answer/115173386) 。

Expand Down Expand Up @@ -88,4 +88,4 @@ TCP是全双工通信，可以双向传输数据。任何一方都可以在数

- TCP and UDP Tutorial：https://www.9tut.com/tcp-and-udp-tutorial