Mabry出的News .NET ActiveX控件，是用于构建新闻组服务器的ActiveX控件，可以实现基于NNTP协议的服务器端通信，提供了完备的新闻组管理功能。-Mabry out the News. NET ActiveX control is used to build for the news server ActiveX controls, you can NNTP protocol-based communications server, providing a complete

交换机，路由器等通信协议的好几个ppt，很不错，可以下载-Switches, routers, communication protocols, such as several ppt, very good, you can download