january 3, 2002ce80n -- winter 2002 -- lecture #11 cmpe 80n winter 2002 introduction to networks and...

January 3, 2002 CE80N -- Winter 2002 -- Lecture #1

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CMPE 80NCMPE 80NWinter 2002Winter 2002

Introduction to Networks and the Internet

Dr. Chane L. Fullmer


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UCSC Topical ClassesUCSC 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


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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


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CE80N Course ObjectiveCE80N 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.


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CE80N AssignmentsCE80N Assignments

There will be four assignments– Personal information sheet– Web search exercise– Essay based on Web research– Personal Web page – on-line


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Academic HonestyAcademic Honesty

If we can’t trust you…

….. there is no other question!


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CE80N – GradingCE80N – GradingAssignments:

– Personal info sheet 5%– Web Search Exercise 10% – Web based essay 10%– Personal Web Page 25%

Exams– Midterm 20%– Final 30%


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CE80N -- AssumptionsCE80N -- Assumptions

Our assumptions about you:– No prior Internet experience– Access to computer/account– Email account– Access to Web server

For your personal Web page


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CE80N -- ExpectationsCE80N -- 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.


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Some Necessary TerminologySome Necessary TerminologyInformation 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.


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The Dawn of E-LifeThe 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.


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The InternetThe InternetWhat 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?


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Douglas Comer DefinitionDouglas 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.


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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.


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Two Important TechnologiesTwo 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.


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Telecommunications NetworksTelecommunications Networks

Can Open Up Entirely New Ways of Thinking About:

Products

Customers

Service

Productivity

Organization

Markets

Competition

Telecom Networks are the Delivery Vehicle


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Roadmap to Understand NetworksRoadmap 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.


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What is a Telecom Network?What is a Telecom Network?

• Nodes and Links

• Network Structure

• User Devices

• Media

• Transmission Modes

• Message Formats

• Carrier Services

• Network Management

19CE80N -- Winter 2002 -- Lecture #1

January 3, 2002

Network Hardware and Software

Workstation

Local Attach

• Controller

• Server

• Gateway

Network Backbone

Front EndProcessor

TelecommunicationsManagement Program

Database ManagementProgram

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)


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Telecom Standards Are ImportantTelecom 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.


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Telecom Network ChallengesTelecom Network Challenges

• Ease of Use

• Connectivity and Compatibility

• Performance (Processors, Bandwidth, Storage)

• Cost (price/performance)

• Control

• Ownership


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The Internet as a NetworkThe Internet as a Network

• Personal resource.

• Business resource.

• Reasons it works.

• Global aspects.

• Growth equals big volumes.


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Have you also wondered: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?


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How about: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?


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How significant is all of this?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?


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Technical BookTechnical Book

The Internet Book, Douglas E. Comer, Paperback, 351 Pages, 3rd Edition, Prentice Hall, 2000, ISBN: 0-13-030852-8 SRP: $32.80

Amazon.com -- some used copies @ $8.00

BarnesandNoble.com $32.80

Fatbrain.com -- $32.80


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Business BookBusiness BookNet 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

9/27/99

9/27/99

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

9/20/ 99

Business

Health

Sex

Family

Politics


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DOT BOMB FAILUREDOT BOMB FAILURE


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Internet MythsInternet Myths1. 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.


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Internet TruthsInternet Truths1. 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.


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The Internet Has Created New Models: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


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The Numbers PleaseThe 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) 1989-2001Internet Hosts (000s) 1989-2001

0

50000

100000

150000

200000

250000

Jul-89

Jul-90

Jul-91

Jul-92

Jul-93

Jul-94

Jul-95

Jul-96

Jul-97

Jul-98

Jul-99

Jul-00

Jul-01

High Low


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Most Popular Web Sites Sept. 1999Most Popular Web Sites Sept. 1999

1. Yahoo

2. Microsoft Corp. including MSN.com and LinkExchange

3. AOL.com

4. Go.com World Network

5. CNN Interactive

6. Amazon.com

7. www.pathfinder.com

8. CBS SportsLine

9. Blue Mountain

10. eBay


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Most Popular Web Sites Dec 2001Most Popular Web Sites Dec 20011. Yahoo.com

2. Microsoft \ MSN.com

3. CNet.com

4. CNN.com

5. America Online

6. ESPN.com

7. About.com

8. World Net Daily

9. Ebay

10.Dogpile.com

http://www.yahoo.com/

http://www.msn.com/

http://www.cnet.com/

http://www.cnet.com/

http://www.cnn.com/

http://www.aol.com/

http://www.espn.com/

http://www.about.com/

http://www.worldnetdaily.com/

http://www.ebay.com/

http://www.dogpile.com/

http://www.dogpile.com/


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Top Web Retailers - Sept. 2000Top Web Retailers - Sept. 2000

1. 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


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Top Web Retailers - Feb. 2001Top Web Retailers - Feb. 2001

1. 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


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Policy IssuesPolicy IssuesWide-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


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Government and the Internet Government and the Internet

From antitrust investigators to anti-porn lawmakers, virtually every branch of government turned its focus to the Internet in 1998.


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A Leading Civil Rights Issue!?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.


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Department of CommerceDepartment 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.


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Cyberlaw: A Growth IndustryCyberlaw: 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 1998.

But there were other important and interesting developments in the young world of cyberlaw.


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Internet Sales TaxInternet Sales Tax

How many times have you bought something over the Internet and justified doing so based on not having to pay sales tax?


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Domain NamesDomain 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.”


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E-LearningE-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.


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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.


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So at this point we conclude that: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.”


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Course ScheduleCourse 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 EverywhereCh. 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 CommunicationCh 7, The Local Area Network Arrives

Due Jan 11: Letter of Introduction


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Course Grade StructureCourse Grade Structure

Introduction Letter 5%

Assignments (3) 45%

Midterm Exam 20%

Final Exam 30%

Note: The midterm and final exam will be open book, open

notes.


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CE80N – Due DatesCE80N – Due Dates Assignments: Due Date

1. Personal info sheet Jan 11

2. Web Search Exercise Jan 29

3. Web based essay Feb 26

4. Personal Web Page Mar 15

Exams– Midterm (tentative) Jan 31– Final Mar

19 Option to use last class meet (March 14)


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Search Engine AssignmentSearch 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


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Hwk Assignment #1Hwk 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


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Search EnginesSearch Engines

Which one do YOU use?

Why?

Does a single search engine address

all of your needs?


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Major Search Engines: The Same, But Major Search Engines: The Same, But DifferentDifferent

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


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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.


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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.


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Any idiot can write a search engine, the World Wide Web was a real challenge.

1,550 search engines!

Tim Berners-Lee


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A Logical ApproachA 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.


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Web Search ArticleWeb Search ArticleHwk Assignment #2Hwk 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


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Personal Web Page Personal Web Page Hwk Assignment #3Hwk 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


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Your Own Web Page -- Free!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.


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There is also CATSThere 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.


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Major Class ContentMajor 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.


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That is what we plan for the That is what we plan for the course 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.


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Course QuestionnaireCourse Questionnaire

Complete the course questionnaire.Complete the course questionnaire.

Questionnaire available at the class web Questionnaire available at the class web site:site:

http://www.cse.ucsc.edu/classes/cmpe80n/Winter02


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Important InformationImportant InformationCourse: CMPE80N –

Introduction to Networks & The InternetTuesday/Thursday 12:00 – 1:45BE152

Class Web Site:•http://www.cse.ucsc.edu/classes/cmpe80n/Winter02

Instructor: Dr. Chane Fullmer 399F Baskin EngineeringOffice hours: T/Th [email protected]


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Important InformationImportant InformationTeaching Assistant:

Venkatesh RajendranOffice hours: [email protected]

Text: The Internet Book – 3rd EditionDouglas E. Comer

january 3, 2002ce80n -- winter 2002 -- lecture #11 cmpe 80n winter 2002 introduction to networks and...

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