1引言计算机网络的理论教学涉及计算机和通信两个领域的知识。一方面,大量的概念和技术彼此交织在一起,需要学生在学习一定的理论知识基础上,领会相应的技术;另一方面,不断涌现的新技术使该领域的知识不断地更新,要求从Internet搜索这方面的新知识,并在教学中进 1 Introduction Computer network theory teaching involves two areas of computer and communications knowledge. On the one hand, a large number of concepts and technologies are intertwined with each other, requiring students to learn a certain theoretical knowledge based on the understanding of the corresponding technology; the other hand, emerging new technologies so that the field of knowledge constantly updated, requiring from the Internet Search for new knowledge in this area, and progress in teaching