Transcript What is the Internet?

IT 20403/30403
Web Development
The Internet & World Wide Web
Began in 1969 with the ARPANET
(Advanced Research Project Agency Network)
ARPANET
3 Goals:
Communication between scientists & universities
Military & Government Communications
Nuclear Proof
The Internet
What is the Internet?
A World-Wide Collection of Networks (Servers)
The Hardware Part of the Network
The Internet
How do we communicate on the Internet?
IP (Internet Protocol) Addresses
xxx.xxx.xxx.xxx
Example:
192.168.10.10
The Internet
How do we connect to the Internet?
Modem (MODdulate/DEModulate)
Analog Device
Connects through the Phone System (POTS)
Limited to 56kbps speeds (56,000 bits per second)
The Internet
How do we connect to the Internet cont’d?
Network Interface Card (NIC)
&
Digital Modems (Routers)
DSL (Digital Subscriber Line)
Cable
Satellite
ISDN (Integrated Signal Digital Network)
The Internet
How do we get to our websites?
DNS (Domain Name Services) through a
Domain Name Server (DNS Server)
Example:
www.urg.edu
or
206.21.59.35
World Wide Web
What is the World Wide Web (www)?
The World-Wide Collection of Documents that reside on
the Internet (Servers)
The Software Part of the Network
World Wide Web
How do we use the www?
Web Browser Software
Firefox
Netscape
Internet Explorer
Opera
Etc.
World Wide Web
How are documents made on the www?
HTML (Hyper-Text Markup Language)
All web documents are created using the HTML
programming language
World Wide Web
How do we find documents on the www?
Web Address:
http://www.rio.edu/StudentLife/Default.htm
Hyper-Text Transfer
Protocol
Domain Name
Path
Document
World Wide Web
The HTML Programming Language
Very easy to learn and forms the basis for all web
documents
HTML describes how a page should be formatted.
Internet & WWW
What makes all of this work?
A Network Protocol
TCP/IP
Transfer Control Protocol/Internet Protocol
Allows communication between the Internet Servers and
the Web Browsers on Client computers
Internet & WWW
What is the most used part of the Internet?
E-Mail
(Electronic Mail)
Billions of messages are transferred each day
Internet & WWW
Why do I care about all of this?
Answers:
We are in Web Development Class
We want to Pass this Course
We like to Strain our Brains
I Payds my Muny, so I wants my Edumakation
Internet & WWW
QUESTIONS?
"He who asks a question is a fool for five
minutes; he who does not ask a question remains
a fool forever."
Chinese Proverb
Internet & WWW
Web Publishing
http://student.rio.edu/webdev/sxxxxxx
Username = urg\Sxxxxx
Password = same as your Rio login password