什么是Internet? Internet(国际互联网)是在计算机网络的基础上建立起来的。正如我们所知道,计算机网络把许多计算机或计算中心联接起来,其中每一台计算机都有可能通过网络为任何其它计算机上的用户提供服务;自七十年代以来,世界各国先后建立了几十万个局域网和几万个广域网,在这个过程中,为了在网络间交换信息,又在不同的范围内实现网络间的相互联结,形成了若干由网络组成的互联网。Internet采用TCP/IP协议作为共同的通信协议,将世界范围内许许多多的计算机和计算机网络联结在一起,成为当今世界最大、最流行的全球性互联网,大量的各种计算机网络正在源源不断地加入到Internet中。网络的出现,改变了计算机的工 What is the Internet? Internet (Internet) is built on the basis of the computer network. As we all know, computer networks connect many computers or computing centers, each of which has the potential to serve users on any other computer over the Internet; since the 1970s, countries in the world have established hundreds of thousands A local area network and tens of thousands of wide area networks, in this process, in order to exchange information between networks, but also in different contexts to achieve inter-network interconnection, the formation of a number of Internet consisting of the Internet. The Internet uses TCP / IP as a common communication protocol, linking many computers and computer networks worldwide to become the largest and most popular global Internet in the world today. A large number of various computer networks are continuously flowing Add to the Internet. The emergence of the Internet has changed the work of the computer