The Internet

World Wide Web Overview

• World Wide Web -- an interactive multimedia delivery client-server system.

• Web browser -- the client software of WWW.
  • You can get a list of browser softwares from this site.
  • Lynx - Unix text-based Web browser, developed by the University of Kansas
    • Lynx Users Guide
  • Mozila -- open source browser

• Hypertext

• Hyperlink

• Protocol -- HTTP (Hypertext Transport Protocol)

• URL -- Universal Resource Location
  • URL basic format -- protocol://host (or) server/path
  • http://
  • ftp://
  • telnet://
  • news:
  • mailto:
  • wais://

• Netscape Web page features
  • Title bar -- shows the title of the current document
  • Tool bar -- clickable buttons for Netscape navigation
    • Back
    • Forward
    • Home
    • Reload
    • Images
    • Open
    • Print
    • Find
    • Stop
  • Menu bar -- this drop-down manual bar is similar to other Windows applications
    • File
    • Edit
    • View
    • Go
    • Bookmarks -- Effective Bookmarks Management
    • Options
    • Directory
    • Window
    • Help
  • Directory bar -- clickable buttons provide links to useful information
    • What's New
    • What's Cool
    • Handbook
    • Net Search
    • Net Directory
    • Software
  • Location or Go to Box -- displays the URL of the current document.
  • Status Indicator -- the Netscape icon indicates whether a document is still being retrieved.
  • Main Window -- the content display area of current document
  • Security icon -- this key symbol shows the security status of the current document.
    • Broken key -- insecure
    • Solid key -- secure
    • two teeth -- high-grade encryption
    • one tooth -- medium-grade encryption
  • Status box -- displays URL for a link, or the status of a transfer.
  • Progress bar -- indicates the progress of a transfer.
  • Mail icon -- a direct link to the Netscape mail software.