DITA Session 2 Review

Today's lecture discussed "The Internet and the World Wide Web". 

A network links computers together.
Types of networks are:

• LAN - Local Area Network which works within a building
• WAN - Wide Area Network which workes between different buildings
• Internet - a vast network of networks
• examples - telephones, cable, satellite
• allows computers to connect across the globe and it is a building block for the WWW
• It's based on a design by the US Military in the 1960s during the Cold War Era
• Allows access to files remotely

Protoclos

• telnet - allows access to another PC
• ftp - allows uploading of files

Domain Name System - DNS Space

• generic - .com, .org, .gob
• national - .ac, .uk

Disruptive Technology
The Internet disturbs the way that people work.

• publishing -- today's society believes that they can find out anything they need to know on the Internet.
• music -- many people don't see the purpose in going into a brick and mortar store and buying a tangible cd when you can download the album electronically.
• software development -- there are many open share software sites

Client/Server Model

• server - detects messages, sends resources
• client - sends requests, interprets responses

URL - Universal Resource Locator
http://www.city.ac.uk/cs/conditions/conditionsofuse.html

http:// (protocol)
http://www.city.ac.uk/ (dns name of server)
/cs/conditions/conditionsofuse.html (local path in relation to server folder)

• browser acts as client
• sends a request to computer with specified address
• asks for a particular document
• server constantly running http "daemon"
• program that awaits a program to connect to it
• processes requests and sends digital document to browser
• client interprets and displays it
• server may respond to thousands of requests per second

So today I created several web pages and added links and images.  It was pretty simple for me because I'd learned html a few years ago.  In 2006 I created a web page for the art business that my mom and I have.  I took an online beginning html course and learned the basics.  The web address is http://www.sherikao.com/.  It's not very good, but I was proud at the time.

We published our pages to the school's server so that we can access them on the web.