What's the Internet:"nuts and bolts"view protocols control sending, router workstation receiving of msgs 目server e.g.,TCP,IP,HTTP,FTP PPP mobile Internet:"network of networks" loosely hierarchical public Internet versus regionaSP private intranet ▣Internet standards RFC:Reguest for comments IETF:Internet Engineering Task Force company network Introduction 1-6
Introduction 1-6 What’s the Internet: “nuts and bolts” view q protocols control sending, receiving of msgs v e.g., TCP, IP, HTTP, FTP, PPP q Internet: “network of networks” v loosely hierarchical v public Internet versus private intranet q Internet standards v RFC: Request for comments v IETF: Internet Engineering Task Force local ISP company network regional ISP router workstation server mobile
What's the Internet:a service view communication infrastructure enables distributed applications: ÷Web,email,,games,e- commerce,file sharing communication services provided to apps: *Connectionless unreliable *connection-oriented reliable Introduction 1-7
Introduction 1-7 What’s the Internet: a service view q communication infrastructure enables distributed applications: v Web, email, games, e- commerce, file sharing q communication services provided to apps: v Connectionless unreliable v connection-oriented reliable
Wikipedia:The Internet The Internet is a global system of interconnected computer networks that use the standard Internet Protocol Suite (TCP/IP)to serve billions of users worldwide.It is a network of networks that consists of millions of private and public,academic,business, and government networks of local to global scope that are linked by a broad array of electronic and optical networking technologies.The Internet carries a vast array of information resources and services, most notably the inter-linked hypertext documents of the World Wide Web(W)and the infrastructure to support electronic mail. Introduction 1-8
Introduction 1-8 Wikipedia: The Internet q The Internet is a global system of interconnected computer networks that use the standard Internet Protocol Suite (TCP/IP) to serve billions of users worldwide. It is a network of networks that consists of millions of private and public, academic, business, and government networks of local to global scope that are linked by a broad array of electronic and optical networking technologies. The Internet carries a vast array of information resources and services, most notably the inter-linked hypertext documents of the World Wide Web (WWW) and the infrastructure to support electronic mail
Wikipedia:The Internet Most traditional communications media,such as telephone and television services,are reshaped or redefined using the technologies of the Internet,giving rise to services such as Voice over Internet Protocol (VolP)and IPTV. Newspaper publishing has been reshaped into Web sites,blogging,and web feeds.The Internet has enabled or accelerated the creation of new forms of human interactions through instant messaging,Internet forums, and social networking sites. Introduction 1-9
Introduction 1-9 Wikipedia: The Internet q Most traditional communications media, such as telephone and television services, are reshaped or redefined using the technologies of the Internet, giving rise to services such as Voice over Internet Protocol (VoIP) and IPTV. Newspaper publishing has been reshaped into Web sites, blogging, and web feeds. The Internet has enabled or accelerated the creation of new forms of human interactions through instant messaging, Internet forums, and social networking sites
Wikipedia:The Internet The origins of the Internet reach back to the 1960s when the United States funded research projects of its military agencies to build robust,fault-tolerant and distributed computer networks.This research and a period of civilian funding of a new U.S.backbone by the National Science Foundation spawned worldwide participation in the development of new networking technologies and led to the commercialization of an international network in the mid 1990s,and resulted in the following popularization of countless applications in virtually every aspect of modern human life.As of 2009,an estimated quarter of Earth's population uses the services of the Internet. Introduction 1-10
Introduction 1-10 Wikipedia: The Internet q The origins of the Internet reach back to the 1960s when the United States funded research projects of its military agencies to build robust, fault-tolerant and distributed computer networks. This research and a period of civilian funding of a new U.S. backbone by the National Science Foundation spawned worldwide participation in the development of new networking technologies and led to the commercialization of an international network in the mid 1990s, and resulted in the following popularization of countless applications in virtually every aspect of modern human life. As of 2009, an estimated quarter of Earth's population uses the services of the Internet