信息技术在业务中：互联网、局域网和外网.ppt

Management Information Systems, 3rd Edition Effy Oz Management Information Systems, 3rd Edition Effy Oz * E-Commerce: The Internet, Intranets, and Extranets Management Information Systems, 3rd Edition Effy Oz * Learning Objectives When you finish this chapter, you will Know what the Internet is. Know the features for information exchange that can be conducted over the World Wide Web. Understand how the Web facilitates electronic commerce. Be able to generate basic ideas for new business ventures utilizing the Web. Appreciate the major risks and limitations of using the Web for business activities. Management Information Systems, 3rd Edition Effy Oz * What is the Internet? The Development of the Internet ARPANET was an open system designed for the free flow of information, but available only to members of academic institutions and some in the defense industry. U.S. government decided to split the network into a civilian one and a military one. Civilian network became the Internet Internet is now a network of networks. Management Information Systems, 3rd Edition Effy Oz * What is the Internet? Figure 7.1 The Internet connects millions of servers. Management Information Systems, 3rd Edition Effy Oz * What is the Internet? Growth of the Internet Number of servers From a few hundred in 1991, to more than 115,000,000 by mid-2000 Number of users More than 200 million; increased rapidly during 1999 Commercial Online Services Companies like America Online provide “online” service to paying subscribers on their private networks. Management Information Systems, 3rd Edition Effy Oz * What is the Internet? Figure 7.2 World growth of the Internet Management Information Systems, 3rd Edition Effy Oz * What is the Internet? Figure 7.3 The number of Internet domain servers continues to grow Management Information Systems, 3rd Edition Effy Oz * Internet Domains A domain name is assigned to each IP address. Domain names are registered by one of a group of companies authorized to