The Internet
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
What is an ISP? Internet Service Provider ISPs Comcast AOL A 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
Navigating a in the Web 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 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: Instant Search Box View multiple sites in a single browser window Instant Search Box allows a quick search of the Internet
More parts of a Browser Status Bar Shows the progress and loading status of the website
More parts of a Browser Toolbar Favorites Shows the icons for moving around the Web Page. Favorites add favorite websites or sites you frequently visit
Toolbar & Buttons Home Print Page and Tools icons 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.
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!
The Internet