这是一个关于计算机网络安全的ppt文档，通过这个文档，可以了解计算机网络安全编程基础。-this is a ppt about the safty of computers .according this,you can know more about the basic knowledge of the safty of computers.

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主要介绍计算机网络的基础知识ppt课件希望大家能够喜欢-Introduces the basics of computer networks ppt courseware hope you will like