数据通讯与网络教程是进行网络编程和数据通信人员的一本圣经，共分为十部分，这是第九部分，尤其对准备从事网络编程、数据通信编程的工程人员具有指导意义。...

代码说明：

数据通讯与网络教程是进行网络编程和数据通信人员的一本圣经，共分为十部分，这是第九部分，尤其对准备从事网络编程、数据通信编程的工程人员具有指导意义。- The data communication and the network course are carries on the network programming and a data communication personnel s Holy Bible, altogether divides into ten parts, this is the ninth part, especially to prepares to be engaged in the network programming, the data communication programming project personnel has the instruction significance.