Is the global system of interconnected computer networks that uses a protocol to communicate between networks and devices?

This stage is not yet reached, but the growing needs for more customer-friendly, easily accessible and device-independent technology is pushing these developments. He has also expressed his views on Nomadic Computing which means that the Internet would be accessible for all devices anywhere and anytime. The Internet, at present, is accessible anywhere and anytime, but we are still to work on “all devices” being able to plug-in on the Internet. Internet was made with the assumption of a fixed desktop usage. Dr. Klienrock expresses his concern about no availability of an IT administrator to look up the network issues personally when one is on-the-go i.e travelling, which involves switching between networks at different areas. His solution for this problem is a portable system support administrator for trouble-free internet service on any network that one can connect to and is available round-the-clock at anyplace for any device.

His vision includes Smart Spaces. As explained by him, Smart Spaces is the concept of bringing cyberspace out of one’s machine out in to our physical world. He foresees the Internet being able to automate everything to make life easier by making all appliances able to communicate to each other and also to the customer. He says this embedded technology is possible by installing thousands of processors per human which can communicate, has memory sensors, cameras, microphones,

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 (
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