华为的HCIA有哪些技术是实际项目上用的

视频：

https://mp4.xacisco.net/2019/457-%E5%8D%8E%E4%B8%BA%E7%9A%84HCIA%E6%9C%89%E5%93%AA%E4%BA%9B%E6%8A%80%E6%9C%AF%E6%98%AF%E5%AE%9E%E9%99%85%E9%A1%B9%E7%9B%AE%E4%B8%8A%E7%94%A8%E7%9A%84/%E5%8D%8E%E4%B8%BA%E7%9A%84HCIA%E6%9C%89%E5%93%AA%E4%BA%9B%E6%8A%80%E6%9C%AF%E6%98%AF%E5%AE%9E%E9%99%85%E9%A1%B9%E7%9B%AE%E4%B8%8A%E7%94%A8%E7%9A%84.mp4