CIS 160 Introduction to the Internet

1. CIS 160Introduction to the Internet Ken Turner Office: 222-5470 E-mail: turnerke57@hotmail.com Tuesday, 4:00 to 6:50 Room 2156, Information Sciences Building

2. Syllabus Course Description This course is an introduction to the Internet through the World Wide Web. Through instructor examples and hands-on approaches, the students will be introduced to important Internet features. Students will learn the concepts and skills necessary to productively use the Internet and its applications.

3. SyllabusCourse Objectives • Describe the Internet and its development. • Describe the World Wide Web. • Understand the roles of a Browser and Hyperlinks on the World Wide Web. • Understand the use of various Net Directory Services. • Identify and use various Search Engines. • Understand and use Electronic Mail. • Understand Listservs and Newsgroups as they relate to mass communication.

4. Syllabus Text New Perspectives Series The Internet, Comprehensive James Perry & Gary Schneider DON’T buy the “Basic” version

5. Syllabus Evaluation Final grade in this course will be based on the following requirements: • Two objective, or a combination of hands-on and objective quizzes. These quizzes will be given upon the completion of each chapter. Each quiz is worth 25 points. • Written exam. A 200-point Comprehensive Final will be given on the date shown in the syllabus.

6. Syllabus • Homework assignments. Each assignment is worth 10 points. Due dates are shown in the syllabus. These assignments are due at the beginning of the class period on that date. • Daily attendance and participation in class. Students are expected to be present for all assigned lectures or laboratory sessions.

7. Syllabus Warning If a student is absent more times during the semester than the number of times the class meets per week, the student may be dropped from the course at the discretion of the instructor. This means that if you are absent three times, you may be dropped from the class.

8. Syllabus Grade Points Final Exam 200 2 Quizzes (25 points each) 50 Homework 20 Class Participation 30 __ Total Possible 300

9. Syllabus Grade Scale A = 93% = at least 279 Points B = 84% = at least 252 Points C = 75% = at least 225 Points D = 69% = at least 207 Points

10. Syllabus Lab Policies Read and follow the policies that are posted in this lab. Internet access in this lab is for class use only. The labs are intended for student use to complete class assignments. Do not abuse this policy by printing Web pages and/or documents that have no relevance to this, or any other Business Division class.

11. Class Rules • This is an Internet class; it’s not rocket science • My name is Ken: Mr. Turner is my dad. • The ONLY stupid question is the one that’s never asked! • Do not surf the Web or play games while I’m lecturing; it’s rude to me and your fellow students. (It can lead to a reduction in participation points) • Pay attention to class; the last three students that came into my class thinking they knew everything FAILED because they didn’t pay attention. Those students that came to learn PASSED (As and Bs). ANY QUESTIONS?

12. Syllabus E-Mail You must have your own e-mail account (not your brother’s, sister’s, husband’s, wife’s) to complete this class. If you don’t already have one, I will show you how to obtain one at hotmail.com.

13. Chapter 1, Networks and the Internet • Getting an E-mail account • use an Internet browser (Netscape of Microsoft Internet Explorer) to access http://www.hotmail.com, then click on the “Free Email” banner. • Fill in the information as required. • Create a username that is easy to remember, use first initial and last name if possible (you may need to add special characters)

14. Chapter 1, Networks and the Internet • Getting an E-mail account • Create a sign-in name and password that are easy to remember, use first initial and last name if possible (you may need to add special characters) • De-select the two check boxes located under “services” they will lead to endless junk mail • Send me an e-mail message, my address is turnerke57@hotmail.com

15. Chapter 1, Networks and the Internet Class Website Use an Internet browser (prefer Microsoft Internet Explorer) to access http://www.angelfire.com/clone/keturner/class/index.html There will be links for the weekly lecture, the course syllabus and to sites for additional information.

16. Chapter 1, Networks and the Internet • Opening a Class Lecture on the Website : • Access the Class Website using Microsoft Explorer • http://www.angelfire.com/clone/keturner/class/index.html • Double-click the link to This Week’s lecture • When a dialog box appears asking if you want to open the file or save it, click open • The lecture slide show will run in the browser window

17. Chapter 1, Networks and the Internet • Printing Lecture Handouts • While the lecture slide show is visible in the browser window select File then Print • On the left-hand side of the Print dialog box, near the bottom you will notice a Print What drop-down selection box • Select Handouts • When you do, you will notice that to the right of the dialog box you can now configure the way the handouts print out • Use the drop box to select 3 slides per page

18. Chapter 1, Networks and the Internet • Printing Lecture Handouts • This gives you three slides per page and room to write notes next to each one • Please print handouts only, DO NOT print out Slides and do not print handouts with 1 slide per page • This wastes paper!

19. Chapter 1, Networks and the Internet • What is the Internet ? • “A large collection of computers, located all over the world, that are connected to one another in various ways” • A “network of networks” • A vast repository of information, both useful and useless

20. Chapter 1, Networks and the Internet Internet Growth 50 40 30 20 10 Number of Internet Hosts (in millions) ‘91 ‘92 ‘93 ‘94 ‘95 ‘96 ‘97 ‘98 ‘99

21. Chapter 1, Networks and the Internet Internet Growth 8 7 6 5 4 3 2 1 Estimated Number of Web Sites (in millions) ‘93 ‘94 ‘95 ‘96 ‘97 ‘98 ‘99

22. Chapter 1, Networks and the Internet Internet Hosts by Domain Jan 2000 Source data: M. Lottor, Internet SoftwareConsortium <www.isc.org>

23. Chapter 1, Networks and the Internet Global Distribution of Internet Users

24. Chapter 1, Networks and the Internet • In 1999, almost half of the world’s online • users are outside of the U.S./Canada

25. Chapter 1, Networks and the Internet Projected Internet Users in 2000 2% North America Western Europe Eastern Europe Asia-Pacific South / Central America Middle East / Africa 3% 18% 47% 3% 27%

26. Chapter 1, Networks and the Internet • How do you Connect to the Internet ? • Via a dedicated network connection such as those connecting schools, businesses, etc. • Via a dial-up connection from home or office using a modem

27. Chapter 1, Networks and the Internet • What is a Network? • A number of computers and peripherals physically connected in a manner that allows for an easy exchange of information, usually including storage and retrieval and some manner of sharing files.

28. Chapter 1, Networks and the Internet • What is a Network made of? • End-user equipment; usually computers and printers • Infrastructure; cable plant and infrastructure equipment (switches, routers and hubs) • Network service equipment; assorted file servers

29. Chapter 1, Networks and the Internet • Client/Server Local Area Networks • A Local Area Network (LAN) is a group of “geographically local” computers connected to a network. (LAN vs. WAN) • Client/Server architecture utilizes a software “client” located on a computer that connects to a specified server. Novell/Microsoft NT, UNIX

30. Chapter 1, Networks and the Internet • Client/Server Local Area Networks • Proprietary client software is loaded and configured on the client workstation which allows it to connect to the proprietary server software (a.k.a. Network Operating System) loaded on the server. • User access is controlled by Network Operating System administration tools.

31. Chapter 1, Networks and the Internet • Client/Server Local Area Networks • Network Operating System: server software that enables the server to provide network services and resources to clients, including access privileges, data storage and printing

32. Chapter 1, Networks and the Internet • Ethernet Networks • 10 Base2 • Arranged as a “daisy-chain” • Networked devices connected to same cable • Single point of failure

33. Chapter 1, Networks and the Internet • Ethernet Networks • 10 BaseT • Most often arranged as a star topology • All networked devices connect directly to the hub • No single point of failure • Hubs can be linked together to form a larger LAN or a WAN

34. Chapter 1, Networks and the Internet • Cabling • Twisted Pair, copper: inexpensive, used locally • Coaxial, copper, old technology, not installed in new systems much • Fiber-Optic, expensive, very good for high traffic and long distances (relative)

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36. Chapter 1, Networks and the Internet • Cable Plant • Local cable, usually copper CAT5 connects workstation to local telco closet. • Backbone, often fiber optic, connects local telco closets to central network connections. • Patch panels are used for modular connectivity. Changes can be made easily without having to re-wire.

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40. Chapter 1, Networks and the Internet • Wide Area Networks • Geographically distant (relative term) • Usually connecting a group of LANs into a contiguous network • Data lines are used to create connections

41. Chapter 1, Networks and the Internet WAN Equipment Simplified • CSU/DSU connects the router to the external network • The router routes LAN traffic that is destined for another LAN, or segment

42. Chapter 1, Networks and the Internet Data Lines Granite City LAN Belleville LAN Red Bud LAN WAN Simplified

43. Chapter 1, Networks and the Internet • Bandwidth • Simplified definition is the amount of data that can be transported over a circuit • Think of the analogy of a garden hose versus a pipeline. Much more water can flow down the pipeline than the garden hose, but you wouldn’t want to water your flowers with a pipeline.

44. Chapter 1, Networks and the Internet • Bandwidth is everything! • Common Ethernet LAN speeds are 10MBs (10 BaseT Ethernet), 100MBs (Fast Ethernet), and 1000Mbs (Gigabit Ethernet) • Common WAN speeds are T1 (1.544 MBs) and Fractional T (1/4T etc) • Some institutions have T3, we will soon...

45. Chapter 1, Networks and the Internet Local CAT5 cabling Local Workstation Local Telco Closet Patch Panel Backbone Cabling Central Connections Server Farm

46. Chapter 1, Networks and the Internet Data Communications Line Internet Service Provider (ISP) Local Network Internet Backbone Servers Located Anywhere

47. Chapter 1, Networks and the Internet Phone Line Modem bank at Internet Service Provider (ISP) Home Computer with Modem Internet Backbone Servers Located Anywhere

48. Chapter 1, Networks and the Internet Web Server Is the WWW a client server network? Local Workstation HTML pages HTML Client Web Browser Netscape or Internet Explorer

49. Next Week: Chapter 2, E-Mail For Next Tuesday Homework Assignment: Send me an e-mail (use an existing e-mail account or set up a new e-mail account at hotmail.com) include your name etc (I can’t tell who you are by your e-mail name). Read Chapters 1 and 2