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!.