tailieunhanh - Chapter 11: Infrastructure for Electronic Commerce

Discuss the security requirements of Internet and ecommerce applications, and how are these requirements fulfilled by various hardware and software systems. | Chapter 11 Infrastructure for Electronic Commerce Learning Objectives Describe the protocols underlying Internet client/server applications Compare the functions and structures of Web browsers and servers Discuss the security requirements of Internet and e-commerce applications, and how are these requirements fulfilled by various hardware and software systems Describe the functional requirements for online selling and what are the specialized services and servers that perform these functions Describe the business functions that Web chat can fulfill and list some of the commercially available systems that support chat Understand the ways in which audio, video and other multimedia content are being delivered over the Internet and to what business uses this content is being applied Learning Objectives (cont.) A Network of Networks = Internet Internet is a network of hundreds of thousands interconnected networks Network Service Providers (NSPs) runs the backbones Internet Service | Chapter 11 Infrastructure for Electronic Commerce Learning Objectives Describe the protocols underlying Internet client/server applications Compare the functions and structures of Web browsers and servers Discuss the security requirements of Internet and e-commerce applications, and how are these requirements fulfilled by various hardware and software systems Describe the functional requirements for online selling and what are the specialized services and servers that perform these functions Describe the business functions that Web chat can fulfill and list some of the commercially available systems that support chat Understand the ways in which audio, video and other multimedia content are being delivered over the Internet and to what business uses this content is being applied Learning Objectives (cont.) A Network of Networks = Internet Internet is a network of hundreds of thousands interconnected networks Network Service Providers (NSPs) runs the backbones Internet Service Providers (ISPs) provide the delivery subnetworks Internet Network Architecture NAP NAP NAP NAP ISP ISP ISP ISP ISP ISP ISP ISP ISP ISP 0 Backbone 5 © Prentice Hall, 2000 Internet Protocols Protocols - A set of rules that determine how two computers communicate with one another over a network The protocols embody a series of design principles Interoperable— the system supports computers and software from different vendors. For e-commerce this means that the customers or businesses are not required to buy specific systems in order to conduct business. Layered— the collection of Internet protocols work in layers with each layer building on the layers at lower levels. Simple— each of the layers in the architecture provides only a few functions or operations. This means that application programmers are hidden from the complexities of the underlying hardware. End-to-End— the Internet is based on “end-to-end” protocols. This means that the interpretation of the data happens at the .