Presentation Transcript

1. Introduction to the Internet

   CMP 101 L02. Internet Unit A
2. The Internet A worldwide collection of networks Has a variety of uses Electronic messages (e-mail) Accessing information Shopping Meetings Entertainment Education
3. 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.
4. 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
5. 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
6. 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.
7. 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
8. 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… Click here to see a list of all top-level domains from IANA (Internet Assigned Numbers Authority)
9. 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.
10. 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
11. Web Browsers Special programs needed to view Web pages
12. Web Browsers They convert documents that look like this: Hypertext Markup Language (HTML) consists of tags like the ones shown here.
13. Web Browsers Into this:
14. Web Browsers Examples MS Internet Explorer Mozilla Firefox Opera Safari Chrome
15. Overview: The following slides will review the parts of the Internet Explorer window you will use in this exercise. Internet Explorer 9
16. 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.
17. Internet Explorer Menu Bar Displays menu to access browser commands.
18. 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.
19. Internet Explorer Command Bar Displays buttons to access browser commands such as Home and Print.
20. 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.
21. Internet Explorer Favorites button Click this button open up your favorites list.
22. Internet Explorer Tools button Click this button open to access several browser commands such as save and print.
23. Internet Explorer Favorites Bar Easy access to your favorite web sites and your favorites list.
24. Tabs Browse multiple sites in one browser window. Internet Explorer
25. Internet Explorer Status Indicator Changes to an animated circle while the page is loading
26. 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.
27. Internet Explorer Back and Forward buttons Move to a previously visited page.
28. 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.
29. Internet Explorer Address Bar Autocomplete button Click to access previously visited pages (history) and favorites.
30. Internet Explorer Compatibility View Correct display problems with web sites designed for older browsers.
31. Internet Explorer Refresh button Click to reload the currently displayed page.
32. Internet Explorer Stop button Click to stop loading a page.
33. 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.
34. Internet Explorer Notification bar Messages from Internet Explorer that request information or inform you of problems.
35. You are now ready to complete the activity!. Internet Explorer 9