history of the internet
DESCRIPTION
History of the internetTRANSCRIPT
History of the Internet
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“• The largest network in the world that can
connect any computer to another computer as long as they both have the internet.
Where Did It All Begin?
• The World Wide Web began 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 does WWW stand for?
• 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• Beginning of what would
become the internet
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
The Internet Screen
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
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– Yandex
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
What is a domain?
• The address of the URL of a particular WEB site
• 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
• vk.com
Some common domains….• .COM –
– Commercial• .EDU –
– Educational• .NET –
– Network• .GOV –
– Government• .ORG –
– Non-Profit Organizations• .INT –
– International• .MIL –
– Military
Privacy and the Net
• 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 a Great Time of Life We Live In!!!
THANKS FOR WATHCHING