Presentation on theme: "January 3, 2002CE80N -- Winter 2002 -- Lecture #11 CMPE 80N Winter 2002 Introduction to Networks and the Internet Dr. Chane L. Fullmer."— Presentation transcript:
January 3, 2002CE80N -- Winter Lecture #11 CMPE 80N Winter 2002 Introduction to Networks and the Internet Dr. Chane L. Fullmer
January 3, 2002CE80N -- Winter Lecture #12 UCSC Topical Classes These courses expose students to introductory-level themes of broad social or intellectual relevance. Understanding Drugs The Secret Sex Life of Plants Life in the Sea Politics of the Internet Wall Street and the Money Game
January 3, 2002CE80N -- Winter Lecture #13 It is logical to devote a large part of this first class to provide as clear an understanding as possible regarding: 1. Course objectives and content. 2. Assignments and grading. 3. Our assumptions and expectations. Course Information
January 3, 2002CE80N -- Winter Lecture #14 CE80N Course Objective To help students to become Internet “smart.” To understand both the “What” and the “Why” of networks in general and the Internet specifically. Note: This course is not specific to CE/CIS/EE majors. It is intended for a wide audience with little or no prior experience with the Internet, or networks in general.
January 3, 2002CE80N -- Winter Lecture #15 CE80N Assignments There will be four assignments – Personal information sheet – Web search exercise – Essay based on Web research – Personal Web page – on-line
January 3, 2002CE80N -- Winter Lecture #16 Academic Honesty If we can’t trust you… ….. there is no other question!
January 3, 2002CE80N -- Winter Lecture #17 CE80N – Grading Assignments: – Personal info sheet 5% – Web Search Exercise10% – Web based essay10% – Personal Web Page25% Exams – Midterm20% – Final30%
January 3, 2002CE80N -- Winter Lecture #18 CE80N -- Assumptions Our assumptions about you: – No prior Internet experience – Access to computer/account – account – Access to Web server For your personal Web page
January 3, 2002CE80N -- Winter Lecture #19 CE80N -- Expectations On successful completion of this course: – You will be a competent Internet user – You will have a basic understanding of the Internet’s underlying operations – You will have your own personal Web page, and on-line.
January 3, 2002CE80N -- Winter Lecture #110 Some Necessary Terminology Information Technology (IT) - “The pieces and things.” Hardware Software Telecom Services Information Systems (IS) - Built with IT Hardware, Systems Software, Application Software, Telecommunication Networks (LANs, WANs) Information Systems Organization - People with a responsibility for IT and IS support.
January 3, 2002CE80N -- Winter Lecture #111 The Dawn of E-Life Once a novelty, the Internet is now transforming how we all live, think, talk and love; how we go to school, make money, see the doctor and elect presidents. It is crucial to assess this, because the digital revolution is more profound than a mere change of tools.
January 3, 2002CE80N -- Winter Lecture #112 The Internet What is it? What do you do with it? How do you join the Internet club? Who owns, runs and controls it? How big is it? How did it become what it is? What will it be like in the future?
January 3, 2002CE80N -- Winter Lecture #113 Douglas Comer Definition The Internet is a wildly-successful, rapidly- growing, global digital library built on a remarkably flexible communication technology. The Internet digital library offers a variety of services used to create, browse, access, search, view and communicate information on a diverse set of topics.
January 3, 2002CE80N -- Winter Lecture #114 Intel Internet Definition The Internet is a global web of networks and servers. It connects people to people, businesses to people and businesses to businesses.
January 3, 2002CE80N -- Winter Lecture #115 Two Important Technologies Transportation: The ability to rapidly and safely move people and goods around the world. Information Technology (IT): The ability to capture and process data and make it available both rapidly and accurately to any part of the world.
January 3, 2002CE80N -- Winter Lecture #116 Telecommunications Networks Can Open Up Entirely New Ways of Thinking About: Products Customers Service Productivity Organization Markets Competition Telecom Networks are the Delivery Vehicle
January 3, 2002CE80N -- Winter Lecture #117 Roadmap to Understand Networks Start where they started--with the telephone system. Contrast analog versus digital. Understand why digital has won the battle. Identify major components of networks. Distinguish between Local Area Networks (LANs) and Wide Area Networks (WANs) Use the Internet as an example of a network.
January 3, 2002CE80N -- Winter Lecture #118 What is a Telecom Network? Nodes and Links Network Structure User Devices Media Transmission Modes Message Formats Carrier Services Network Management
January 3, 2002CE80N -- Winter Lecture #119 Network Hardware and Software Workstation Local Attach Controller Server Gateway Network Backbone Front End Processor Telecommunications Management Program Database Management Program Operating System Access Method Application Programs Mainframe/Server Dumb Terminal Network Computer (NC) PC PC Workstation Workstation * * Channel Attach (1) (2) (3) (4) (5) (6)
January 3, 2002CE80N -- Winter Lecture #120 Telecom Standards Are Important As long as your systems remain within the confines of your own organization you can implement an application any way you want to do it. When your information systems go beyond the boundaries of your organization you will undoubtedly have to operate consistent with industry standards.
January 3, 2002CE80N -- Winter Lecture #121 Telecom Network Challenges Ease of Use Connectivity and Compatibility Performance (Processors, Bandwidth, Storage) Cost (price/performance) Control Ownership
January 3, 2002CE80N -- Winter Lecture #122 The Internet as a Network Personal resource. Business resource. Reasons it works. Global aspects. Growth equals big volumes.
January 3, 2002CE80N -- Winter Lecture #123 Have you also wondered: 1.What the difference is between a telco, an ISP, the WWW, Yahoo, Alta Vista, Lycos, Ask Jeeves and Amazon.com? 2.What all the talk is about backbones, bandwidth, nodes and links, packets, protocols and TCP/IP? 3.How over time, the average speed of a PC modem went from 2.4 Kb to 56 Kb and your home telephone line stayed the same? 4.Why you need a modem on your PC at home and you don’t need one for your PC at school? 5.Why the results from different Internet search engines vary so dramatically?
January 3, 2002CE80N -- Winter Lecture #124 How about: 6. If Internet security is really a problem? 7. How a company gets connected to the Internet with its own domain name? 8. If it is inevitable that Internet growth will result in poorer performance (longer response times, lack to access to web pages, more downtime, etc.)? 9. What distinguishes the Internet from other networks? 10. Have you wondered how you can personally cash in on the gold rush?
January 3, 2002CE80N -- Winter Lecture #125 How significant is all of this? To you personally? To you in terms of career opportunities? To businesses and public sector institutions? To the US and its role as a global citizen?
January 3, 2002CE80N -- Winter Lecture #126 Technical Book The Internet Book, Douglas E. Comer, Paperback, 351 Pages, 3rd Edition, Prentice Hall, 2000, ISBN: SRP: $32.80 Amazon.com -- some used $8.00 BarnesandNoble.com $32.80 Fatbrain.com -- $32.80
January 3, 2002CE80N -- Winter Lecture #127 Business Book Net Success : 24 Leaders in Web Commerce Show You How to Put the Web to Work for Your Business by Christina Ford Haylock, Len Muscarella, Ron Schultz and Steve Case Retail Price: $24.95 NOTE: This book is NOT used for this course in W2002
INTERNET “GOLDRUSH” SUPPLY STORE WESTERN INN
9/27/99 Yahoo Softbank Priceline.com Morgan Stanley eBay Amazon.com
Dell Computer Michael Jordan Proxicom MicroStrategy Amazon.com Gateway Broadcast.com No Limit Yahoo! Trilogy Software
Speed Knowledge Culture Technology Great People 9/13/99
January 3, 2002CE80N -- Winter Lecture #135 Internet Myths 1. The Internet is free! 2. It is free because the federal government subsidizes the backbone. 3. Electronic commerce is a new innovation made possible by the Internet. 4. Little retailers based on the Internet will drive their big rivals out of business. 5. The Internet is the only major national and international network.
January 3, 2002CE80N -- Winter Lecture #136 Internet Truths 1. The acceptance of the Internet as a new technology based on reaching fifty million users happened faster than any other technology in the history of the world. 3. Within the US, the Internet has already fundamentally changed some industries 4. The Internet greatly influenced venture capital funding evaluations. 2. The Internet as a business resource is having a dramatic impact on organizations. 5. The Internet redefines itself every two years.
January 3, 2002CE80N -- Winter Lecture #137 The Internet Has Created New Models: Information Sources Communication Business Strategies and Organization Consumer Shopping and Purchasing Advertising Government Policies and Legislation Educating K-12 and University Students Entertaining Children and Adults Investing and/or Gambling
January 3, 2002CE80N -- Winter Lecture #138 The Numbers Please Difficult to assess how many people actually use the Internet. Countries with highest number of connected households: Denmark 54% US 50.9% Singapore 47.5% Taiwan 40% Korea 37%3/26/01 report
Internet Hosts (000s)
January 3, 2002CE80N -- Winter Lecture #140 Most Popular Web Sites Sept Yahoo 2. Microsoft Corp. including MSN.com and LinkExchange 3. AOL.com 4. Go.com World Network 5. CNN Interactive 6. Amazon.com CBS SportsLine 9. Blue Mountain 10. eBay
January 3, 2002CE80N -- Winter Lecture #141 Most Popular Web Sites Dec Yahoo.comYahoo.com 2.Microsoft \ MSN.comMicrosoft \ MSN.com 3.CNet.comCNet.com 4.CNN.comCNN.com 5.America OnlineAmerica Online 6.ESPN.comESPN.com 7.About.comAbout.com 8.World Net DailyWorld Net Daily 9.EbayEbay 10.Dogpile.comDogpile.com
January 3, 2002CE80N -- Winter Lecture #142 Top Web Retailers - Sept Amazon.com 2. Ticketmaster.com 3. Buy.com 4. * JCPenney 5. Drugstore.com 6. * Barnes&Noble 7. CDNow 8. Pets.com 9. * Sears 10. PlanetR.com 11. eToys 12. half.com 13. Egghead.com 14. Real.com 15. * Gateway 16. Landsend 17. iPrint.com 18. Outpost.com 19. More.com 20. * Spiegel.com * Both brick and mortar and Web sites
January 3, 2002CE80N -- Winter Lecture #143 Top Web Retailers - Feb Yahoo! 2. AOL 3. MSN 4. Microsoft 5. Passport 6. GeoCities 7. Proprietary 8. eBay 9. Lycos 10. Amazon.com 11. Angelfire 12. Netscape 13. BlueMountain 14. NBCi 15. Tripod 16. AskJeeves 17. Excite 18. About.com 19. iWon 20. AmericanGreetings * Both brick and mortar and Web sites
January 3, 2002CE80N -- Winter Lecture #144 Policy Issues Wide-ranging policy discussions: Taxation - Local, State, National Copyright Protection Privacy, Confidentiality, Integrity, Authenticity Governance (e.g. DNS) Spam, Content Filtering, Pornography Legal Significance of Digital Signatures Regulation of Conventional Services
January 3, 2002CE80N -- Winter Lecture #145 Government and the Internet From antitrust investigators to anti-porn lawmakers, virtually every branch of government turned its focus to the Internet in 1998.
January 3, 2002CE80N -- Winter Lecture #146 A Leading Civil Rights Issue!? US Department of Commerce report entitled Falling through the Net concluded that the differing levels of computer ownership and Internet access is one of America’s leading civil rights issues.
January 3, 2002CE80N -- Winter Lecture #147 Department of Commerce The Internet succeeds in great measure because it is a decentralized system that encourages innovation and maximizes individual freedom. Where possible, market mechanisms that support competition and consumer choice should drive the technical management of the Internet because they will promote innovation, preserve diversity, and enhance user choice and satisfaction.
January 3, 2002CE80N -- Winter Lecture #148 Cyberlaw: A Growth Industry 1998 was also a major growth year for cyberlaw. The trench warfare between Microsoft and the Justice Department may have dominated Internet legal news in But there were other important and interesting developments in the young world of cyberlaw.
January 3, 2002CE80N -- Winter Lecture #149 Internet Sales Tax How many times have you bought something over the Internet and justified doing so based on not having to pay sales tax?
January 3, 2002CE80N -- Winter Lecture #150 Domain Names Clash between the engineering roots of the Internet and the commercialization over adding more domains to.com,.net and.org. Network Solutions Inc. had previously registered domain names under an agreement with the National Science Foundation. At issue is Internet governance including intellectual property rights and trademarks. “We are talking about supporting an infrastructure of millions of networks. This is not a geek question any more.”
January 3, 2002CE80N -- Winter Lecture #151 E-Learning Over 70 million people are receiving an education on the Internet on an annual basis. E-learning is changing education, training, and information exchange. With no time or distance barriers, it is making the ability to improve one's life through education a reality around the world. E-learning could be the great equalizer among global populations.
January 3, 2002CE80N -- Winter Lecture #152 Why E-Learning Is Important E-learning delivers accountability, accessibility, and opportunity. It allows people and organizations to keep up with changes in the global economy that now occur on Internet time. One day, training for every job on earth will be available on the Internet.
January 3, 2002CE80N -- Winter Lecture #153 So at this point we conclude that: The Internet has had and continues to have a dramatic impact on how we work, live and play. The key role that it plays is one of connecting people and businesses to communicate, interact and in some cases to buy and sell things. It has grown like a weed and continues to do so particularly outside the US. People talk about it, use it, invest in it and complain accordingly. It accomplishes all of these things as a “network of networks.”
January 3, 2002CE80N -- Winter Lecture #154 Course Schedule Read and clearly understand the class syllabus, the organizational structure of the book, the course assignments and the due dates.
2. Jan 8 (T) Telecommunication Network Introduction Read Ch. 3, Telephones Everywhere Ch. 4, The World Was Once Analog. Ch 5, The Once and Future Digital Network 3. Jan 10 (Th) Introduction to Networking, cont. Read Ch 6, Basic Communication Ch 7, The Local Area Network Arrives Due Jan 11: Letter of Introduction
January 3, 2002CE80N -- Winter Lecture #156 Course Grade Structure Introduction Letter 5% Assignments (3)45% Midterm Exam20% Final Exam30% Note: The midterm and final exam will be open book, open notes.
January 3, 2002CE80N -- Winter Lecture #157 CE80N – Due Dates Assignments:Due Date 1. Personal info sheet Jan Web Search Exercise Jan Web based essay Feb Personal Web Page Mar 15 Exams – Midterm(tentative) Jan 31 – Final Mar 19 Option to use last class meet (March 14)
January 3, 2002CE80N -- Winter Lecture #158 Search Engine Assignment Conduct a compound search using a subject that is of use to you in this or another class. Use four different search engines and evaluate the results according to the following four criteria: 1. Ease of use 2. Accuracy 3. Advanced Search Capabilities 4. Extra Features/Functions
January 3, 2002CE80N -- Winter Lecture #159 Hwk Assignment #1 Web Search Engine comparison – 1 page written report – What search engines you used – Results based on the four criteria: 1.Ease of use 2.Accuracy 3.Advanced Search Capabilities 4.Extra Features/Functions Due – Jan 29, 2002
January 3, 2002CE80N -- Winter Lecture #160 Search Engines Which one do YOU use? Why? Does a single search engine address all of your needs?
January 3, 2002CE80N -- Winter Lecture #161 Major Search Engines: The Same, But Different All search engines have the basic parts but there are differences in how these parts are tuned. That is why the same search on different search engines often produces different results. Alta Vista AOL NetFind Ask Jeeves Excite Google Infoseek Lycos Overture WebCrawler Yahoo
January 3, 2002CE80N -- Winter Lecture #162 Search Engines Search engines are intensely competitive products, trying to win loyalty both with fast-and-furious marketing campaigns and by constantly improving their technology. The hot search engine of last year is not necessarily this year’s best.
January 3, 2002CE80N -- Winter Lecture #163 Search Engines To get gold, you must sift through mounds of raw ore. To find valuable nuggets of information on the Internet, you have to sift through an almost unfathomable number of Web pages--which explains the popularity of Web search engines. These search sites are information refineries, helping us quickly distill useful material from the mountains of data that comprises the Internet.
January 3, 2002CE80N -- Winter Lecture #164 Search Engines Any idiot can write a search engine, the World Wide Web was a real challenge. 1,550 search engines! Tim Berners-Lee
January 3, 2002CE80N -- Winter Lecture #165 A Logical Approach Experiment with different search engines. Even though they are all similar, they can have important differences. A search engine that is quick, but returns 40,000 pages of fluff may not be as effective as one that may be slower but returns only 30 pages of highly refined information. Find the search engine that is best suited for your needs.
January 3, 2002CE80N -- Winter Lecture #166 Web Search Article Hwk Assignment #2 Essay based on Web search results – 1-2 pages on any topic of interest – Must include results from at least four Web page references – References must be listed in a bibliography Due February 26, 2002
January 3, 2002CE80N -- Winter Lecture #167 Personal Web Page Hwk Assignment #3 Build your web page and place it on a web server for all the world to see Contents: – Picture of yourself – Text about yourself – Pointers to at least two other web pages – Optional goodies Hit counter… Due March 15, 2002
January 3, 2002CE80N -- Winter Lecture #168 Your Own Web Page -- Free! FreeServers.com is a network of over one hundred thousand web sites, representing a broad spectrum of Internet users. Freeservers began in June 1998 and was officially launched in May 1999 and provides powerful yet easy to use tools and services which allow anyone to build, enhance, and promote their web site cost free, risk free, and hassle free on the Internet. Users understand that their free web site is supported by advertisers and are actively encouraged to support the sponsors, providing a positive environment for advertising.
January 3, 2002CE80N -- Winter Lecture #169 There is also CATS Free Server space for your personal web page. CBT tutorials in the PC labs. Claris software in the PC labs. Word download as a HTML documents. Basic HTML instructions to clear up the web page. Elizabeth Castros HTML for the World Wide Web. Lots of HTML information on the Web.
January 3, 2002CE80N -- Winter Lecture #170 Major Class Content Understand the major components of a telecom network. Have an appreciation for the impact of the Internet on the world as we know it. Understand how the World Wide Web works. Understand the basics of search engines.
January 3, 2002CE80N -- Winter Lecture #171 That is what we plan for the course If you are registered, simply prepare your letter of introduction as your price of admission. If you are not registered we will add people up to the capacity of the room.
January 3, 2002CE80N -- Winter Lecture #172 Course Questionnaire Complete the course questionnaire. Questionnaire available at the class web site:
January 3, 2002CE80N -- Winter Lecture #173 Important Information Course:CMPE80N – Introduction to Networks & The Internet Tuesday/Thursday 12:00 – 1:45 BE152 Class Web Site: Instructor:Dr. Chane Fullmer 399F Baskin Engineering Office hours: T/Th 2-3PM
January 3, 2002CE80N -- Winter Lecture #174 Important Information Teaching Assistant: Venkatesh Rajendran Office hours: TBA Text:The Internet Book – 3 rd Edition Douglas E. Comer