CPS 1 - Spring, 1999 - Ramm 1/20/98 #3

Announce

Chapt 11. Computer Communications

Addressing (Layers Again!)
- Berkeley Internet Name Domain
  - person on host is e.g. ramm@oberon.cs.duke.edu
How These Addresses CoExist
Applications
- information services
  - WAIS
Client/Server
- WWW
Computer Security
- Spoofing
Confidentiality
Encryption
- PGP
Kerberos
- MIT Athena Project
Liability

HyperText Markup Language (HTML)

Goals
- Hypertext
  - Links Other Network Resources!

Linked Property Makes WWW What it is Today

Formerly, getting around was painful for the novice

Used FTP, Telnet, etc.

Other Precursors were WAIS and gopher

Basic Structure

<HTML>                            

<HEAD>
<TITLE> Ted's Home Page </TITLE>
</HEAD>
                                  
<BODY bgcolor="0000FF"         
      text="FFFF00"             
      vlink="000000"           
      link="FFFFFF">        

<CENTER>                      
<H1>TED </H1>                
Welcome to my Home Page! <BR>   
</CENTER>                       

</BODY>                        
</HTML>

What the document will look like on the Web

TED

Welcome to my Home Page!

HTML Structures

Ordered Lists

<OL>
<LI> First Item </LI>
<LI> Second Item </LI>
</OL>

First Item
Second Item

Unordered Lists

<UL>
<LI> First Item </LI>
<LI> Second Item </LI> 
</UL>

First Item
Second Item

Tables

<TABLE BORDER=1>
<TR> <TD>Cell 1</TD> <TD>Cell 2</TD> </TR> 
<TR> <TD>Cell 3</TD> <TD>Cell 4</TD> </TR> 
</TABLE>

Cell 1	Cell 2
Cell 3	Cell 4

Links
```
<a href="http://www.cs.duke.edu/~ruby/cps1">
     CPS 1 Home Page </a>
```
CPS 1 Home Page
(clicking on the words CPS 1 Home Page activates the link and brings you to the class home page)
General Format: <a href="complete web address"> Word </a>

Text Formatting

Computer Science <STRONG>Fundamentals</STRONG>

Computer Science Fundamentals

Computer <EM>Science</EM> Fundamentals

Computer Science Fundamentals

Carriage Returns

Welcome
WELCOME

Welcome WELCOME

             
Welcome <BR>
WELCOME

Welcome
WELCOME

Color Codes

red      FF0000          blue     0000FF  
orange   FF7F00          purple   9370DB 
yellow   FFFF00          black    000000 
green    00FF00          white    FFFFFF

Note The tags are case insensitive