CCNA course

This unofficial CCNA course covers everything you will need to know to pass the Cisco CCNA 200-120 exam, but it also provides many information about internetworking in general. This free tutorial can be used to study for the CCNA 200-120 exam, and it can also be used by anyone who wants to learn about computer networks in general.

You will learn what computer networks are, the difference between the OSI and TCP models, what an IP address is, how to configure an IP address on a Cisco router, etc. In later lessons we will go through topics such as routing protocols, IPv6, NAT, Spanning Tree Protocol…

Note that this is not an official application. Cisco Systems, Inc. is in no way affiliated with the application.

这个非官方的CCNA课程涵盖了通过Cisco CCNA 200-120考试所需要知道的一切，但它也提供了许多有关网络互联的信息。这个免费的教程可以用来学习CCNA 200-120考试，任何想要了解计算机网络的人都可以使用它。

您将了解计算机网络是什么，OSI和TCP模型之间的区别，IP地址是什么，如何在Cisco路由器上配置IP地址等。在后面的课程中，我们将介绍路由协议，IPv6等主题，NAT，生成树协议......

请注意，这不是官方应用程序。 Cisco Systems，Inc。与该应用程序无关。