cmp 101 introduction to the internet l02. internet unit a
TRANSCRIPT
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CMP 101
INTRODUCTION TO THE INTERNET
L02. Internet Unit A
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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
http://www.worwic.edu/Computer_Lab/CMP101_Resources/index.htm
Example
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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
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.
http://www.worwic.edu/Computer_Lab/CMP101_Resources/index.htm
Example
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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
Domain NameName of the computer or network where the web page is stored
http://www.worwic.edu/Computer_Lab/CMP101_Resources/index.htm
Example
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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
Top-level DomainCategory domains: edu, com, org…Country / Territory domains: uk, au, de…
http://www.worwic.edu/Computer_Lab/CMP101_Resources/index.htm
Example
Click here to see a list of all top-level domains from IANA (Internet Assigned Numbers Authority)
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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
PathThe folders and subfolders where the web page is stored.
http://www.worwic.edu/Computer_Lab/CMP101_Resources/index.htm
Example
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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
File NameThe name of the file
http://www.worwic.edu/Computer_Lab/CMP101_Resources/index.htm
Example
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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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INTERNET EXPLORER 9
Overview: The following slides will review the parts of the Internet Explorer window you will use in this exercise.
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INTERNET EXPLORER 9Address/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 BarDisplays 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 buttonClick this button open to access several browser commands such
as save and print.
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INTERNET EXPLORER
Favorites BarEasy access to your favorite web
sites and your favorites list.
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INTERNET EXPLORER TabsBrowse 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 buttonClick 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
buttonClick 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 buttonClick to reload the currently displayed
page.
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INTERNET EXPLORER
Stop buttonClick to stop loading a page.
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INTERNET EXPLORER
Status barDisplays 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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INTERNET EXPLORER 9You are now ready to complete the activity!.