Welcome to CERN CERN – The European Organization for Nuclear Research, Geneva, Switzerland.
Where Did It All Begin? The World Wide Web began at CERN in Geneva, Switzerland In one of the...
-
Upload
brisa-billingham -
Category
Documents
-
view
218 -
download
0
Transcript of Where Did It All Begin? The World Wide Web began at CERN in Geneva, Switzerland In one of the...
Where Did It All Begin?The World Wide Web began at CERN in
Geneva, SwitzerlandIn 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
LANA 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 InternetModem - A MO-dulator DE-Modulator.
Converts digital information to analog and analog to digital. Analoglike sound waves Digitalsignal in 1s and 0s
Types of ModemsTelephone - designed to modulate a data signal
over the telephoneDSL - 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 InformationAnalog - Like sound waves, a computer
cannot read them.
Digital - 1s and 0s. Computer Language
What is an ISP?Internet Service
ProviderA service company
that provides a user with an account on a host computer to have access to the Internet
ISPs Comcast AOL MSN Netzero Earthlink Qwest People PC
How do you get around?
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 InternetTypes 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 BrowserTabs:
View multiple sites in a single browser window
Instant Search Box allows a quick search of the Internet
More parts of a BrowserToolbar
Shows the icons for moving around the Web Page.
Favoritesadd favorite websites or sites you frequently visit
Toolbar & ButtonsHome
Quickly takes your back to your default homepage
PrintPrint the website you are viewing
Page and Tools iconsAllows access to additional options such as
toolbars, history, etc.
More parts of a BrowserStatus 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 LocatorURL – 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; .govThe name that is to the right of the last dot in
the Internet [email protected]
Some common domains…..COM -- Commercial.EDU -- Educational.NET -- Network.GOV -- Government.ORG – Non-Profit
Organizations.INT -- International.MIL -- Military
Navigating the InternetSearch 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 EnginesGoogleYahooMSNAsk JeevesDog Pile
Common Internet TermsSurfing - 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 & CommunicationHyperText 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
HTTPHyperText 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 & YouNetiquette - the rules of behavior on the
internet
Privacy - There is NO privacy on the Internet. All visits to websites are tracked using cookies and logsPasswords 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 copyrightedIt can be copied or used freelyBasically: Public Property
Pop-upsPop-ups - Unwanted advertisements on the
webPop-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 systemBlocks potential hackers from your invading
your computer or your network.
Any computer that is connected to the internet should have a firewall
Other Internet StuffUser 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 PolicyAn 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!