BMT227_Lect02

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1

The Internet, the Web,

and Electronic

Commerce

Chapter 2

Competencies (1 of 2)

• Discuss the origins of the Internet and the Web

• Describe how to access the Web using providers

and browsers

• Discuss Internet communications, including e-mail,instant messaging, social

networking, blogs,

microblogs, and wikis.

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• Describe search tools, including search engines,

metasearch engines, and specialized search

engines.

• Evaluate the accuracy of information on the Web.

• Discuss electronic commerce, including B2C, C2C,

B2B, and security issues.

• Describe Web uti lities:

Web-based applications,

FTP, plug-ins, and filters,

Internet security, and filetransfer utilities.

Competencies (2 of 2)

• Why do you use internet ???

• The Internet is often referred to as the Information

Superhighway because it connects mill ions of

people across the globe.

• Unlike a typical highway, the Internet moves idea

and information.

• The Web provides an easy-to-use, intuit ive interface

to connect to the Internet and is used by millions of

people every day.

• Competent end users need to be aware of the

resources available on the Internet and the Web.

Introduction

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• Large network that connects smaller

networks globally

• The Internet was Launched in 1969

– When US funded a project that develop a national

computer network

called ARPANET

• World Wide Web or

WWW was intro-duced in 1991 at

CERN

The Internet and the Web

ARPANET: Advanced Research Project Agency Network

CERN: Center for European Nuclear Research

Common Internet Uses

• Communicating

– Exchange e-mail

– Discussion Groups

• Online shopping

• Searching

– Virtual Libraries

• Entertainment

• Education or e-learning

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Access

• Common way to access the Internet is through a

Commercial Internet Service Prov iders (ISP)

– Regional Service Provider

– Wireless service

providers

Browsers

• Programs that provide access to Webresources

• Al low you to surf the Internet

• Four well-known browsers – Mozilla Firefox

– Apple Safari

– Microsoft Internet Explorer

– Google Chrome

• Address or location of the resource must bespecified

– URL: uniform resource locator

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URLs

• Uniform Resource Locators

– All URLs have at least two parts

• Protocol

• Domain name

• Locates Web sites

More on Browsers

• Browsers interpret HTML commands

– Hypertext Markup Language

– Contained in a document

• Display document as aWeb page

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• Most popular Internet activity

• Types of communication

– Electronic Mail (E-Mail)

– Instant Messaging

– Social Networking

Communication

E-Mail

• Transmission of electronic messages over theInternet

• Basic parts

– Header

• Address

• Subject

• Attachment

– Message

– Signature Line

Return

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Instant Messaging

• Is an extension of email that provides direct, livecommunication between two or more people

• Instant messaging programs also include:

– Video conferencing features

– File sharing

– Remote assistance

• Most widely used instant messaging services:

– Microsof t’s MSN Messenger

– Yahoo Messenger

Return

Social Networking

• One of the fastest growing uses of the Internet

• Three basic categories:

– Reuniting si tes

– Friend of a friend sites – Common interest sites

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Blogs, Microblogs, and Wikis• Web logs or blogs –postings that

are timestamped and arranged with

the newest item first

• Microblog – publishes short

sentences

– Answer the question - What are

you doing?

– Twitter is a microblog

• Wiki – a Web site speciallydesigned to allow visitors to fill in

missing information

• Search engines

• Metasearch engines

• Specialized search engines

• Content Evaluation

Search Tools

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• Be careful how you use information you find on the

Web

• Check for the follow ing:

– Authori ty

– Accuracy

– Objectivity

– Currency

Return

Content Evaluation

Search Engines

• Specialized programs to assist in locatinginformation

• Types of searches

– Keyword search

– Directory search

Return

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Metasearch Engines

Return

Specialized Search Engines

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Content Evaluation

• Not all in formation on the web is accurate

• Ways to evaluate accuracy of Web information

include:

– Authori ty

– Accuracy

– Objectivity

– Currency

• Also known as e-commerce

• Buying and selling of goods over the Internet

– Business-to-consumer (B2C)

– Consumer-to-consumer (C2C)

• Web auctions

– Business-to-business (B2B)

Electronic Commerce

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• Involves the sale of a product or service from one

business to another (B2B)

• Primarily a manufacturer supplier relationship

Business to Business

Business to Consumer

• Fastest growing type of e-commerce

• Three most w idely used B2C applications:

– Online banking

– Financial trading

– Shopping

Return

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Consumer to Consumer

Web Auctions• Consumer-to-consumer e-commerce (C2C)

• Similar to traditional auctions

• Types

– Auct ion house si tes

– Person-to-person

auction sites

Security

• Payment methods must be fast, reliable, andsecure

• Three basic options

– Checks

– Credit card

– Digital cash

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• Specialized utility programs that make usingthe internet & web safer and easier

– Web-based applications

– Plug-Ins

– Filters

– FTP

– Internet Securi ty Suites

Web Util it ies

Plug-Ins

Return

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Filters

Return

Internet Security Suites

• Collection of utilit y programs designed to maintain

your security and privacy while on the web

– McAfee

– Norton

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• “ Smart” appliances in homes will have theirown Web page

• Refrigerators know what food they contain

• Appliance could send an e-mail to the

grocery store to restock

• Downsides?

A Look to the Future

Web-Accessible Refrigerators

Documents

BMT227_Lect02