Where Did It All Begin? The World Wide Web began at CERN in Geneva,

Switzerland

In one of the largest scientific laboratories in the world.

The laboratory was called CERN (Counseil European Pour la Recherche Nucleaire – European Laboratory for Particle Physics)

What is the Internet? The Internet is the worldwide, publicly accessible

network of interconnected computer networks that transmit data by packet switching.

It is a "network of networks" that consists of millions of smaller domestic, academic, business, and government networks, which together carry various information and services, such as email, online chat, file transfer, and the interlinked Web pages and other documents of the World Wide Web.

What does WWW stand for? WWW = World Wide Web

The Internet and the World Wide Web are not synonymous: Web is actually something that is available via the Internet

The Internet is a collection of interconnected computer networks

The Web is a collection of interconnected documents, linked by hyperlinks and URLs.

What is a Network? Network - two or more computers that are connected

for the purpose of sharing information

LAN A local area network (LAN) is a computer network covering a small

area, like a home, office, or small group of buildings.

Computers that are near each other.

WAN A wide area network or WAN is a computer network covering a

broad geographical area.

The most well-known example of a WAN is the Internet.

What is ARPANET? First network developed in early ’60’s and ’70’s by

scientists and military experts

Allowed them to share information and research data over long distances

An experimental network designed to see how well distributed networks work

Connecting to the Internet Modem - A MO-dulator DE-Modulator.

Converts digital information to analog and analog to digital. Analoglike sound waves Digitalsignal in 1s and 0s

Types of Modems

Telephone - designed to modulate a data signal over the telephone

DSL - designed to modulate a data signal over the telephone using new technology to increase transmission speed

Cable Modem - designed to modulate a data signal over cable television

Analog & Digital Information Analog - Like sound waves, a computer cannot read

them.

Digital - 1s and 0s. Computer Language (ones and

zeros)

What is an ISP? Internet Service

Provider

A service company that provides a user with an account on a host computer to have access to the Internet

ISPs

Comcast (Xfinity)

AOL

Digis

Netzero

Earthlink

CenturyLink

People PC

Utopia

Navigating a in the Web

What is a Browser? Software which allows you to view information and

Web Pages on the WWW

Different browsers can have radically different capabilities and limitations

Viewing the Internet Types of Browsers

The Parts of a Browser Title Bar

Shows the title of the open Web Page and the name of the Browsers.

More parts of a Browser Tabs:

View multiple sites in a single browser window

Instant Search Box

allows a quick search of the Internet

More parts of a Browser Toolbar

Shows the icons for moving around the Web Page.

Favorites

add favorite websites or sites you frequently visit

Toolbar & Buttons Home

Quickly takes your back to your default homepage

Print

Print the website you are viewing

Page and Tools icons

Allows access to additional options such as toolbars, history, etc.

More parts of a Browser Status Bar

Shows the progress and loading status of the website

Where is the Webpage? The webpage come after the toolbar and it is the

information is located

Uniform Resource Locator URL – Uniform Resource Locator.

A URL can be thought of as the address of a web page

Parts of a URL

Transfer Protocol Filename Domain Name

What is a domain? The group that website or email address belongs to.

It tells where the address is located i.e. .com; .edu; .gov

The name that is to the right of the last dot in the Internet address

www.yahoo.com

jostudent@comcast.net

Some common domains…. .COM -- Commercial

.EDU -- Educational

.NET -- Network

.GOV -- Government

.ORG – Non-Profit Organizations

.INT -- International

.MIL -- Military

Navigating the Internet

Search Engine - is a program designed to help find information on the World Wide Web,

They locate and isolate desired information by searching for keywords that the user specifies.

Examples of Search Engines

Google

Yahoo

MSN

Ask Jeeves

Dog Pile

Common Internet Terms Surfing - the term we use when exploring the Internet

Hit - the term used when you connect to the page you

are looking for

Link - allows you to jump from one site to another

Email - the type of mail sent over the internet

Chatting - talking with someone on the internet. Often called Instant Messaging

Internet Language & Communication

HyperText Markup Language (HTML)

The coding scheme used to format text for use in developing Web Pages on the WWW

<b>

<p>

<img src=HTTP://www.sony.com>

<a href=HTTP://www.sony.com

HTTP HyperText Transfer Protocol

The transmission standard used to send an HTML document across the WWW

Ensures reliable connections between many different computer types

A common set of standards that ensures all computers connected to the Internet will have common ground on which to work

The Internet & You Netiquette - the rules of behavior on the internet

Privacy - There is NO privacy on the Internet. All visits to websites are tracked using cookies and logs

Passwords can help protect your information on the Internet

What is Shareware? Software that you can obtain for free on a trial basis

May require some payment for continued use

What is Freeware? Software that is distributed at no cost to the user

The author maintains the copyright

Basically: Software that is copyrighted but can be used freely

What is Public Domain? Software that is NOT copyrighted

It can be copied or used freely

Basically: Public Property

Pop-ups Pop-ups - Unwanted advertisements on the web

Pop-ups usually come from downloading “free” software.

Some companies give you software for free as long as they can put SPYWARE on your computer and monitor where you go on the internet.

What Are Firewalls? A Hardware or software blocking mechanism that

block unauthorized intruders into a computer system

Blocks potential hackers from your invading your computer or your network.

Any computer that is connected to the internet should have a firewall

Other Internet Stuff User Friendly – A term used when a program or

website can be used with ease by people who have little or no computer experience.

Acceptable Use Policy An Acceptable Use Policy (AUP; also sometimes

acceptable usage policy) is a set of rules which outline the ways in which the network may be used.

You all signed and AUP in order to gain access to the school network

You have signed a contract to take care of the computer

equipment – No exceptions!