1. A worldwide system of interconnected computer networks.
The Internet
A worldwide system of interconnected computer networks.

2. How has the Internet changed how Businesses function?
Improve availability of information
Improve ease and speed of communication
Telecommuting-People can work anywhere and still be connected to the office via the Internet ( , networked data & software).
Video Conferencing-meetings across large geographic distances.

3. How was the Internet formed?
Late 1960s-ARPAnet (Advanced Research Projects Agency Network) formed by US Department of Defense to create secure form of military communications in case of attack
Mid 1980s-organizations wanted to connect to ARPAnet to share resources
1986-National Science Foundation (NSF) created NSFnet
1989-World Wide Web invented by Tim Berners-Lee

4. How was the Internet formed?
1990-ARPAnet shut down and NSFnet growing
1993-Mosaic Web browser
1994-Netscape
1995-Government funding for NSFnet discontinued and commercial Internet services take over
1997-Internet access global-WWW exploding

5. Management of Internet
No single entity owns the Internet. It is managed by non-profit organizations and user groups.

7. How does the Internet work?
The Internet works because every computer connected to it uses the same set of rules and procedures called Protocols.
These include an Open System Design so that networks with different topologies, transmission media and operating systems can communicate.

8. Protocols/Rules
TCP - Transmission Control Protocol-prepares data for transmission, provides error checking, enables resending lost data
IP - Internet Protocol-responsible for sending information from one computer to another
Note: Internet activity can be defined as computers communicating using TCP/IP.

9. How are computers connected to the Internet?
Most computers are not connected directly to the Internet, but to a smaller network that connects through gateways to the Internet……Network of Networks
Local networks are owned by individuals, education, government agencies, private companies, etc.

10. Internet Addresses
Computers on the Internet have two addresses to identify them:
IP (Internet Protocol) Address- Four-part numeric address that identifies each device connected to Internet. Each of the four parts is a number between 0 and 255. ie
Static Addressing-address never changes
Dynamic Addressing-temporary address from pool

11. Internet Addresses
2. DNS (Domain Name System) Address-gets translated into IP address to get data from web server (easier to remember than IP address)

12. Top-Level Domains
A top-level domain is used to designate the type of organization
or the country of origin.
Generic top-level domains are commonly three letter suffixes (see below)
Country code top-level domains are commonly two letter suffixes
like .ca, .us, .uk, etc.

13. The World Wide Web
The World Wide Web (www) is a subset of the Internet. It was created in as a method of incorporating hypertext (hyperlinks or webpages).

14. Web Browsers
Web Browsers allow you to view web pages. The latest generation of Web browsers including Microsoft Internet Explorer , Firefox and Google Chrome can open file viewers and other application programs automatically.

15. Internet Terms
HyperText Transfer Protocol (HTTP)-Rules for transfer of hypertext documents
HyperText Transfer Protocol Secure (HTTPS)-HTTP and network security protocol
HyperText Markup Language (HTML)-rules for marking up blocks of text so browser knows how to display them, Internet language as required by HTTP
Uniform Resource Locator (URL)-Internet addresses as required by HTTP.
Web pages-Documents that use HTTP
Homepage-Top-level page within a Web Site

16. Search Engines have 3 Components
-Spider constantly collects data on the Web
-Search Engine organizes data into large database
-Search Engine searches database and pulls out relevant information and provides directory with list of websites

17. Common Search Engines Google (http://google.ca/)
Bing (
Yahoo (
AOL (
Ask (
Dogpile (

18. Evaluate Web Sites: A good source for information?
Validity (author(s) credentials, contact info, domain name, links)
Accuracy (check sources)
Purpose (Educate you? Market a product? Any biases?)
Relevance (meet needs, current)

19. Internet Service Providers (ISP)
A company that provides access to the Internet. They maintain large runs of cabling and network services in order to transfer and deliver web content to those paying a monthly fee.
DSL (Digital Subscriber Line), Cable modem, wireless, and more recently, dedicated high-speed interconnects such as T1 or fiber optic service (typically abbreviated Fios)

20. Common Internet Service Providers
Bell
Cogeco
Comwave
Execulink Telecom
EBTech