Bethel Universitycourse homelink imageBUS105 Information Technology & Applications

Introduction to Web Technology: Networks, Internet, and the World Wide Web

 

  
 
  • What is the internet
    • What is the World Wide Web (www)
      • What is http - HyperText Transfer Protocol
      • What is a web server
      • What is the language of the web - html
      • What are the applications that access the web - browsers
    • What is email (SMTP) - Simple Mail Transfer Protocol
    • What is FTP - File Transfer Protocol
      • What is a file server
    • What is IM
    • What is Internet2 - 10 gigbits/s - 1,000,000,000 bits/second (on campus = 10 Mbps (or 100Mbps) = megabits/second, my dsl - 200Kbps, modem - 56Kbps, cable modem - 1.5Mbps)

Images: .gif  = graphics interchange format - limited to 256 colors - for illustrations not color photos (lossless compression, animation)

Internet Structure Image   transparent gif

Images - .jpg - Joint Photographic Experts Group (JPEG) (16 million colors) - lossy compression - discards what we do not "see" - format is "proprietatry and is owned by Unisys.

PNG (Portable Network Graphics) (open source graphics -patent free - lossless, NO animation, but transparency)

 

Basic html language:

  • tags
    • < >text< />
    • <b>bold</b> -->bold
    • <i>italics</i> -->italics
    • <p>text</p> --->a paragraph
    • text <br /> return with no paragraph
    • <font color="red">red text</font> --> red text
  • anatomy of a web page

    <html>

    <head>

    <title>my web page</title>

    </head>

    <body>

    your text with formatting goes here

    </body>

    </html>

      appears as --->

  • hyperlink
    • <a href="http://www.webopedia.com/">hyperlinked text </a>
  • image
    • <img src="staurastrum.png" width="460" height="374" />

 

Suggested Readings:

What is the Internet, the World Wide Web, and Netscape?

History of the Internet

A Brief History of the Internet

 

©Dr. Bob Kistler
HC317