Internet Infrastructure
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1 Internet Infrastructure
2 ECOMMERCE Syllabus 6-B201 Wed. 13:00-15:00 Week 1 Course Introduction Week 09 No Class ( 广交会 ) Week 2 No Class ( 三八妇女节 ) Week 10 No Class ( 广交会 ) Week 3 Ecommerce Introduction Week 11 Internet Infrastructure Week 4 Product Sourcing Week 12 Game & Gambling Week 5 Taobao & Alibaba Group Week 13 Product Liability Week 6 Psychology of Selling Week 14 Future of Ecommerce Week 7 Fulfillment & Alternative Models Week 8 No Class ( 广交会 ) Week 15 Presentations Week 1 Week 16 Presentations Week 2
3 ECOMMERCE Syllabus 6-B201 Wed. 18:30-20:30 Week 1 Week 2 Course Introduction Ecommerce Introduction Week 09 No Class ( 广交会 ) Week 10 No Class ( 广交会 ) Week 3 Product Sourcing Week 11 Internet Infrastructure Week 4 Taobao & Alibaba Group Week 12 Game & Gambling Week 5 Psychology of Selling Week 13 Product Liability Week 6 Interview Skills (Extra Class) Week 14 Future of Ecommerce Week 7 Fulfillment & Alternative Models Week 8 No Class ( 广交会 ) Week 15 Presentations Week 1 Week 16 Presentations Week 2
4 Homework Review
5 Sales Volume (5.9 Update) 周二下午周三下午周三晚上 Total Personal
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46 Internet Infrastructure Agenda What is Internet -Peer-to-Peer Network Current Status of Internet Where is Internet going & The Future of Internet How Internet works History of Internet Infrastructure GFW-Great Firewall of China -Proxy Server
47 What is the Internet? NOT just the World Wide Web (10%) 90% is Peer to Peer network NOT just a protocol There is only one Internet
48 Peer-to-Peer network (P2P) Private network (Bank, Company) BitTorrent - file sharing protocol -Security -High Speed Download -No Space Restrictions -Server Crashes Don t Affect You -Very Simple Sharing Options
49 BitTorrent Network
50 Current Status of Internet
51 4.4 billion people around the world still don t have Internet.
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56 Source: Chinese Internet Usage Report - Jan 2010
57 Future of Internet
58 Where is the Internet going?
59 Future of the Internet Facial Recognition Chip Implanted No longer Wearable Technology Detect brain wave
60 Future of the Internet
61 Computer-Generated Characters It walks, it talks, it moves like a genuine living creature. But it doesn t ask for backstage perks or $20 million contracts. Use of Virtual Reality
62 Technology Is Destroying Jobs
63 Technology Is Destroying Jobs
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66 How Internet Works
67 How the Internet Works Switching alternatives TCP/IP Domain names Domain name system
68 Web architecture
69 Switching Alternatives
70 TCP/IP Transmission Control Protocol -Sends data as packets -Packets broken up when sent and recombined at the other end Assumptions: -Network unreliable -Flexible -Changing environment -Easy connectivity
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75 Domain Name System
76 Domain Name System Keys to success -Redundancy -Caching Not designed for -Speed -Rapidly changing network
77 Network layers Link-device driver, NIC Network-IP Transfer-TCP, UDP Application-HTTP, HTTPS, FTP, Telnet, SMTP, POP, IMAP Presentation-HTML, XML
78 Network layers URL-a combination of Network, Transfer, and Application layers for accessing a resource on a remote server Browsers convert HTML from a URL into the web pages we know and love.
79 Intranet / Extranet Intranet: a private network that uses Internet architecture Extranet: is an Intranet that is open to a few select outsiders.
80 Web basics The World Wide Web was created in order to solve the following problems: -Wanted a way to point to resources on other computers -Wanted an user friendly interface -Wanted flexibility in how to point to resources Gopher, released in the same year as WWW, solved the first two issues, but not the third. -Used hypertext -Used a user friendly interface -Hierarchical folder-like system Web pages became both the pointer to resources and the resource itself.
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82 History of Internet
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84 The Internet is Born First four nodes of ARPANET( 阿帕网络 ) in 1969 Stanford Research Institute UCLA UCSB UT Developed to support research Included Universities and military institutions, with occasional connections to vendors and suppliers.
85 A Protocol for Communicating TCP/IP Developed in 1973 Put into full use in 1981 Made the host, rather than the network Responsible for transmission Allow multiple networks to connect easily
86 NSF(National Science Foundations)net ARPA was all about cutting edge research, not about maintaining ongoing systems Handed control over from DoD to NSF Connected their own CSNET with ARPANET Grew into NSFNET in 1986
87 NSFnet Backbone
88 By 1990 ARPANET shuts down, NSFnet is in charge. Computer hosts exceeds 200,000 Network backbone upgraded to T3 (45 Mbs) extremely popular -FTP, Telnet, and Usenet other common tools Hypertext linking created Commercial networks in existence
89 Major changes in 1991 NSFnet lets commercial traffic on its backbone World Wide Web released Congress passes the Gore Bill-financed lots of research and network capacity expansion Total traffic exceeds 1 trillion bytes, or 10 billion packets per month! Over 100 countries connected with over 600,000 hosts and nearly 5,000 separate networks.
90 NSFnet Backbone in 1992
91 In 1995 Netscape IPO Dot com boom started Within 5 years, many businesses had websites NSF divested the rest of the backbone to various companies
92 In 1998 Search engine technology woefully bad Google is founded on new search principles
93 By 2000 Internet bubble pops -Lots of bankruptcies -ecommerce did not decline (increased throughout 2000 and 2001) Web 2.0 commences
94 Why was the Internet a success? High flexibility and reliability Open connectivity Quick standard adoption
95 How does the Internet create value for businesses? Reduce transaction costs Quicker communication Increasing ability to share information Greater time and distance availability One stop shopping Network effect
96 Great Firewall of China
97 GFW-Great Firewall of China The Great Firewall of China, also officially known as the Golden Shield Project, is an Internet censorship and surveillance project operated by the government. The firewall aims to: Sites have been shut down for: Neutralize critical online option Prevent its people from being corrupted by evil" cultures Violating their Constitution Attacking state leaders
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103 These walls are kind of funny. First you hate em, then you get used to em. Enough time passes, gets so you depend on them. That s institutionalized. The Shawshank Redemption
104 hopping the wall Proxy server Networking protocol P2P (Point-to-Point Protocol) VPN (Virtual Private Network)
105 Proxy server
106 Conclusion What is Internet -Peer-to-Peer Network Current Status of Internet Where is Internet going & The Future of Internet How Internet works History of Internet Infrastructure GFW-Great Firewall of China -Proxy Server
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