In this chapter, the learning objectives are: Explain the current structure of internet, understand the limitations of todays internet, describe the potential capabilities of internet II, understand how the world wide web works, describe how internet and web features and services support e-commerce. | CSC 330 E-Commerce Teacher Ahmed Mumtaz Mustehsan GM-IT CIIT Islamabad Virtual Campus, CIIT COMSATS Institute of Information Technology T1-Lecture-4 The Internet and The Web Chapter-2 Part-II T1-Lecture-4 For Lecture Material/Slides Thanks to: Copyright © 2010 Pearson Education, Inc Objectives Explain the current structure of Internet. Understand the limitations of todays internet Describe the potential capabilities of Internet II Understand how the world wide web works Describe how internet and web features and services support e-commerce. T1-Lecture-4 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, Inc 1- The Hourglass Model of the Internet SOURCE: Adapted from Computer Science and Telecommunications Board (CSTB), 2000. T1-Lecture-4 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, Inc 1- The Hourglass Model of the Internet T1-Lecture-4 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, Inc 1- The Internet can be characterized as an hour-glass modular structure with a lower layer containing the bit-carrying infrastructure (including cables and switches) and an upper layer containing user applications such as e-mail and the Web. In the narrow waist are transportation protocols such as TCP/IP. Network Technology Substrate layer Layer-1 of Internet technology that is composed of telecommunications networks and protocols Transport Services and Representation Standards layer Layer-2 of Internet architecture that houses the TCP/IP protocol The Hourglass Model of the Internet T1-Lecture-4 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, Inc 1- Middleware Services layer Layer-3: The “glue” that ties the applications to the communications networks, and includes such services as security, authentication, addresses, and storage repositories. Applications layer Layer-4 of Internet architecture that contains client applications; such as World Wide Web, e-mail, and audio or video playback. Internet . | CSC 330 E-Commerce Teacher Ahmed Mumtaz Mustehsan GM-IT CIIT Islamabad Virtual Campus, CIIT COMSATS Institute of Information Technology T1-Lecture-4 The Internet and The Web Chapter-2 Part-II T1-Lecture-4 For Lecture Material/Slides Thanks to: Copyright © 2010 Pearson Education, Inc Objectives Explain the current structure of Internet. Understand the limitations of todays internet Describe the potential capabilities of Internet II Understand how the world wide web works Describe how internet and web features and services support e-commerce. T1-Lecture-4 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, Inc 1- The Hourglass Model of the Internet SOURCE: Adapted from Computer Science and Telecommunications Board (CSTB), 2000. T1-Lecture-4 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, Inc 1- The Hourglass Model of the Internet T1-Lecture-4 Ahmed Mumtaz Mustehsan Copyright © 2010 Pearson Education, Inc 1- The Internet can be characterized
