谢希仁版的《计算机网络》讲义，分为十个章节进行讲解，非常适合初学者使用，结构清晰明了，由浅入深，通俗易懂不可多得的好资料-XieXiRen version of "computer network" notes, is divided into ten chapters and explain, very suitable for beginners, the structure is clear, use 1 straightaway rare good material