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Surfing the Web Prepared by Gena Casas URLs Domain Name System (DNS)provides a mnemonic equivalent of a numeric IP address and ensures that every site on the Internet has an unique address. Ensures each Web page has its own URL - (uniform resource locator). Domains

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prepared by gena casas

Surfing the Web

Prepared by Gena Casas



  • Domain Name System (DNS)provides a mnemonic equivalent of a numeric IP address and ensures that every site on the Internet has an unique address.
  • Ensures each Web page has its own URL - (uniform resource locator).


  • DNS divides the Internet into a series of component networks called domains.
  • Large domains
    • Divided into smaller domains
    • Each domain responsible for maintaining unique addresses in the next lower-level domain, or subdomain.
  • Each host on the Internet is assigned a domain name based on its usage.

URL Format

  • protocol://machine address/path/filename
  • The protocol determines how the communication is handled.
  • The machine address contains the following:
  • The path points to a specific site within the server.
  • The filename is the name of the document.

Home Pages

  • Three different meanings on the Web:
    • Main page for a particular site
    • First page that opens when you start your browser
    • Page that is loaded first time browser is used
  • Default home page can be changed
  • Help organize and access information at site

Hypertext Links

  • Words that trigger events linked to text
  • Underlined and printed in different color
  • Can change default color of hot words
    • Modify browser’s preferences
    • Colors must not be set by page author

Hyperpicture Links

  • Pictorial hot spots that trigger events linked to image.
  • Images can be:
    • little icons
    • larger graphics
    • multiple hot spots in one image

Web Navigation Tools

  • Navigation Buttons - Located at top of browser
    • Back
    • Forward
    • Home
    • Stop
  • History List
    • Three ways to access list
    • Show slightly different information
  • Bookmark
    • A pointer to a Web page

History List

  • Click down arrow just to right of Netsite/Location box.
    • List shows most recent few pages.
    • Includes only URLs typed or entered with Open Page command on File menu.
    • Does not include sites visited by clicking a link.

History List

  • Click Go on the menu bar.
    • Displays all sites visited during this session.
    • Includes both sites visited by linking and by entering URL in Location box.
    • Does not include sites visited in previous sessions.

History List

  • Select History from Communicator menu
  • Press Ctrl-H
    • Displays entry on separate line.
    • Contains page title, URL, and other information.
    • Includes history from previous sessions.

Configure History

  • To set History Parameters
    • Select Preferences from the Edit menu.
    • Click Navigator category.
    • In History section enter number of days to accumulate
    • To clear History, click the Clear History button.


  • To ADD a Bookmark
    • Click the Bookmark icon of the Toolbar bar
    • Click Communicator and click Bookmarks, then click Add Bookmark.
    • If you have a lot of bookmarks, you should organize them in folders.


  • To CHANGE the name of a bookmark
    • Select and right-click the bookmark
    • Click on Bookmark Properties
    • In the name box enter the new name


  • To CREATE a folder
    • Select and right-click the existing folder under which the new folder should be created.
    • Choose New Folder from the context menu
    • Enter the name of your new folder and click OK
  • To ADD a bookmark to a particular folder
    • Click File Bookmark on the menu and select the desired folder.


  • To SAVE a bookmark file to a floppy disk
    • Click Edit Bookmark
    • Click File on the menu bar
    • Click Save As
    • Click Save In list box and type A:\
    • Click the Save button to save the bookmark file and close the dialog box


  • To CREATE a new bookmark file
    • Click Communicator
    • Click Bookmarks
    • Click Edit Bookmark
    • Click File on the menu bar
    • Click New, Blank Page - This opens the Composer window
    • Click Save As and give the empty page a name….be sure that file type is HTML and the correct disk/drive is selected.
    • Close the Composer window
  • Before creating or opening a new bookmark file, be sure you know where your current bookmark mark file is located.