Transcript Web Server - School of Computing

Exploring Microsoft
Office 2003
Internet Explorer and the
World Wide Web: Welcome to
Cyberspace
Robert Grauer and Maryann Barber
Internetto
Explorer
and thethe
WorldNext
Wide Web:
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Committed
Shaping
Generation
Cyberspace
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Objectives (1 of 2)
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Define the Internet and brief history
World Wide Web vs. Internet
Structure of a Web address
“Backing up within an address”
Internet Explorer toolbar
Returning to a Web site
Distinguish between the History and Favorites
lists
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Objectives (2 of 2)
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Using different or multiple search engines
AND, OR, and NOT
Downloading a picture from the Web
E-commerce vs. traditional commerce
Http and https protocols
Define a cookie
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The Internet
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A network of networks
Began in 1969 as ARPAnet (Advanced
Research Projects Agency)
No central authority and thus impossible to
state the precise size
The Internet is not free just because you do
not pay for it
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Connecting to the Internet
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At Work or School
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Via a Local Area
Network
At Home
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Traditional Modem
(56KB)
Cable Modem
DSL Modem
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Via the university’s
network connection
in the dorm
Via Ethercard
connected to the
Data Jack via
network cable
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The World Wide Web
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A subset of the Internet consisting of all
computers with hypertext or hypermedia
documents
These documents contain references (links)
to other documents which may be on a
different computer anywhere in the world
Began in 1991 at the European Particle
Physics Laboratory (CERN) in Switzerland
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Terminolgy
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HTTP – HyperText Transfer Protocol is used to transmit Web
documents
HTTPS – Secure protocol for confidential transactions
HTML – The language in which all Web documents are displayed
TCP/IP – A suite of protocols that allows multiple platforms to
communicate
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URL – Uniform Resource Locator
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Web Server – Computers that store hypertext and/or hypermedia
documents and make them available to other computers
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Web Client – Personal computers that access files held by web
servers
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Web Browser – Software application to locate and display web pages
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Microsoft Internet Explorer
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Menu Bar
Toolbar
File
Edit
View
Favorites
Tools
Help
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Address Bar
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URL
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Back Button
Forward Button
Stop
Refresh
Home
Search
Favorites
History
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The Exploring Office Web Site
Internet Explorer is the browser
Web address (or URL)
HTTP protocol
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Cyberspace
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Hyperlinks
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The essence of the Web as you click on a
link to more to the next document, which
may be stored on a different computer
Hyperlinks may contain text, graphics,
sound, or video links
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Blue underlined fonts are unexplored
Magenta links have been previously accessed
www.microsoft.com
www.microsoft.com
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The Web is always changing
Address bar (address is constant,
but the content changes)
Print button
Hyperlinks
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Uniform Resource Locator (URL)
http://www.annex.com/southwest/museum.htm
Document
Path (Directory or Folder)
Internet Address (Web site)
Means of access,
HyperText Transfer Protocol
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Domain Names
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Original Six:
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.edu (education)
.com (commercial)
.gov (government)
.mil (military)
.net (network
administration)
.org (non-profit)
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New domains:
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.biz (business)
.pro (licensed
professional)
.info (information
services)
.uk (United Kingdom)
.ca (Canada)
.au (Australia)
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Examples of URLs
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My school: www.miami.edu
Exploring Windows: www.prenhall.com/grauer
My favorite site: www.refdesk.com
Anti-virus updates: www.symantec.com
Download software: www.tucows.com
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A message travels the Internet
All that matters is the beginning and ending address
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Searching the Web
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Search Engines
Web Directories
Meta Search Engines
Clearinghouse
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Search Engines
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A program that systematically searches the
Web for documents on a specific topic
Uses a key word or words as a query
Several search engines are available
Each search engine has its own database
No search engine is best
Uses Boolean (logical) operators
Returns “hits” or documents once search has
been submitted
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Suggestions for Searching
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Try multiple search engines on one query
Be aware of logical operators - AND, OR, and
NOT
Search on a concept: e.g., “first ladies” rather
than “Eleanor Roosevelt”
Advanced Searches
Set Bookmarks/Favorites
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Popular Web Search Engines
http://www.altavista.com/
http://www.msn.com/
http://www.go.com/
http://www.excite.com/
http://www.lycos.com
http://www.askjeeves.com/
http://www.webcrawler.com/
http://www.google.com/
http://www.yahoo.com
http://www.search.com/
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Web Site and Saving an Image
Right click picture for
context-sensitive menu
Choose Save Picture
As command
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Copyright Protection
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A copyright provides legal protection to a
written or artistic work, give the author
exclusive rights to its use and distribution
Exceptions
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Credit your sources
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Public domain or Fair use exclusion
Insert Footnote command
Infringement of copyright
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Software piracy
Downloading music illegally
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E-commerce
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The exchange of goods and services
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Buyer and seller
Products and suppliers
A place to “meet”
Marketing to attract the buyer
Accept and process the order
All of these elements are present in ecommerce and traditional commerce
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Advantages of E-commerce
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For the Seller
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Open 24/7
Shoppers from
anywhere
Virtual inventory is
cheaper and extensive
Lower transaction
costs
Target your customers
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For the Buyer
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Open 24/7
Never leave home
Easy to view and
explore product line
Comparison shop
Web site knows you
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Security and Privacy
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Secure transactions
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https protocol
Encryption
Privacy
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Cookie is a small file written to your disk each
time you visit a site
Problem is when one site can read many cookies,
e.g., DoubleClick.com
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Returning to a Previous Site
History folder
Favorites folder
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Organize Favorites
Rename a
favorite
Create a
new folder
Move a
favorite
Delete a
favorite
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Summary
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The Internet is a network of networks
Internet Explorer and Netscape Navigator are browsers
URL is located in the Address Box
Hypertext and hypermedia contain links to other documents
Connect through ISP or LAN or Dial-up
Search Engines are the tools to find information; use multiple search
engines
Searches are based on Boolean operators
Copyright Protection exists for Web Pages
E-Commerce has benefits to both Buyer and Seller
Secure Transactions are possible over the WWW
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