INTRODUCTION TO THE INTERNET
CMP 101
L02. Internet Unit A
THE INTERNET
• A worldwide collection of networks
• Has a variety of uses
• Electronic messages (e-mail)
• Accessing information
• Shopping
• Meetings
• Entertainment
• Education
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THE WORLD WIDE WEB
• A popular subset of the Internet
• Made up of billions of documents (Web Pages)
• Text, graphics, video and/or audio.
• Hyperlinks
• Organized into individual web sites that contain
a collection of related web pages.
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THE WORLD WIDE WEB
• Each web page has it’s own unique address
called a Uniform Resource Locator (URL).
• A URL contains 4 parts: protocol, domain name
which contains a top-level domain, path, and
file name
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THE WORLD WIDE WEB
• Each web page has it’s own unique address
called a Uniform Resource Locator (URL)
• A URL contains 4 parts: protocol, domain name
which contains a top-level domain, path, and
file name
Example
http://www.worwic.edu/Computer_Lab/CMP101_Resources/index.htm
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THE WORLD WIDE WEB
• Each web page has it’s own unique address
called a Uniform Resource Locator (URL)
• A URL contains 4 parts: protocol, domain name
which contains a top-level domain, path, and
file name
Example
http://www.worwic.edu/Computer_Lab/CMP101_Resources/index.htm
Protocol (Rules for file transfer)
HTTP = Hypertext Transfer Protocol: The rules (or instructions) that
networks follow when transferring web pages from one
computer/network on the Internet to another.
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THE WORLD WIDE WEB
• Each web page has it’s own unique address
called a Uniform Resource Locator (URL)
• A URL contains 4 parts: protocol, domain name
which contains a top-level domain, path, and
file name
Example
http://www.worwic.edu/Computer_Lab/CMP101_Resources/index.htm
Domain Name
Name of the computer or network where the web page is stored
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THE WORLD WIDE WEB
• Each web page has it’s own unique address
called a Uniform Resource Locator (URL)
• A URL contains 4 parts: protocol, domain name
which contains a top-level domain, path, and
file name
Example
http://www.worwic.edu/Computer_Lab/CMP101_Resources/index.htm
Top-level Domain
Category domains: edu, com, org…
Country / Territory domains: uk, au, de…
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THE WORLD WIDE WEB
• Each web page has it’s own unique address
called a Uniform Resource Locator (URL)
• A URL contains 4 parts: protocol, domain name
which contains a top-level domain, path, and
file name
Example
http://www.worwic.edu/Computer_Lab/CMP101_Resources/index.htm
Path
The folders and subfolders where the web page is stored.
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THE WORLD WIDE WEB
• Each web page has it’s own unique address
called a Uniform Resource Locator (URL)
• A URL contains 4 parts: protocol, domain name
which contains a top-level domain, path, and
file name
Example
http://www.worwic.edu/Computer_Lab/CMP101_Resources/index.htm
File Name
The name of the file
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WEB BROWSERS
• Special programs needed to view Web pages
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WEB BROWSERS
• They convert documents that look like this:
Hypertext Markup
Language (HTML)
consists of tags
like the ones
shown here.
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WEB BROWSERS
• Into this:
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WEB BROWSERS
• Examples
• MS Internet Explorer
• Mozilla Firefox
• Opera
• Safari
• Chrome
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Overview: The following slides will review the parts of the Internet
Explorer window you will use in this exercise.
INTERNET EXPLORER 9
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INTERNET EXPLORER 9
Address/Search Bar
• Displays the URL of the current Web page.
• Enter a URL here to go to a new Web page.
• Type a search phrase to find information on
the Web.
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INTERNET EXPLORER
Menu Bar
Displays menu to access
browser commands.
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INTERNET EXPLORER
TIP
To turn on/off the menu bar
(and other toolbars), right click
a blank area at the top of the
window and click on the item
you wish to turn on or off.
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INTERNET EXPLORER
Command Bar
Displays buttons to access browser
commands such as Home and Print.
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INTERNET EXPLORER
Home button
Click this button to go to the
browser’s starting page. This can
be configured for each browser
so it many different if you use
Internet Explorer at different
locations.
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INTERNET EXPLORER
Favorites button
Click this button open up your
favorites list.
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INTERNET EXPLORER
Tools button
Click this button open to access
several browser commands such as
save and print.
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INTERNET EXPLORER
Favorites Bar
Easy access to your favorite web
sites and your favorites list.
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INTERNET EXPLORER
Tabs
Browse multiple sites in one browser
window.
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INTERNET EXPLORER
Status Indicator
Changes to an animated circle
while the page is loading
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INTERNET EXPLORER
TIP
If you want the tabs to appear
on a row by themselves, right
click on a tab and choose
Show tabs on a separate row.
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INTERNET EXPLORER
Back and Forward
buttons
Move to a previously visited page.
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INTERNET EXPLORER
Search button
Click to convert address bar to search box
(NOTE: this is not required, you can just type
your search phrase into the address bar and
press Enter.
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INTERNET EXPLORER
Address Bar
Autocomplete
button
Click to access previously visited pages
(history) and favorites.
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INTERNET EXPLORER
Compatibility
View
Correct display problems with web sites
designed for older browsers.
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INTERNET EXPLORER
Refresh button
Click to reload the currently displayed
page.
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INTERNET EXPLORER
Stop button
Click to stop loading a page.
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INTERNET EXPLORER
Status bar
Displays information about the current
status of the browser. Also displays the
URL of links you point to. NOTE: to turn
on/off the status bar, right click in the title
bar area and click status bar.
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INTERNET EXPLORER
Notification bar
Messages from Internet Explorer that
request information or inform you of
problems.
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You are now ready to complete the activity!.
INTERNET EXPLORER 9
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