对于现在的社会，科技的飞速发展已经成为社会发展的标志。其中计算机的发展可谓快中之快，而在计算机的发展中计算机网络的发展又是首当其冲的。-For now the society, the rapid development of science and technology has become a sign of social development. Including the development of the computer can be described as fast fast, and bear the brunt of the computer development in computer network development.