internet ,

PRESENTED BY :Chetan,Punit,Gurpal 2012,2017,2018

INTRODUCTION TO INTERNET

What is the Internet? Internet is a global network in which a

number of computer are connected to each other

Why we use the Internet?

Important Terminologies

Extranet

INTRANET

INTERNET

WWW

INTERNETWORK

An intranet is a set of networks that are under the control of a single administrative entity. Intranet is used to connect employees of organization with each other.

For example – Maruti company having its individual intranet for their employees.

Intranet

An extranet is a private network that uses Internet technology and the public telecommunication system to securely share part of a business's information with suppliers, partners, customers, or other businesses.

Extranet

• Difference Between Extranet And Intranet The main difference between an intranet and an extranet is

that the intranet is the network that is limited for use on the organizations computers, whereas the extranet is an extension of the company’s intranet.

Internet is global network in which a number of computer s are connected to each other. In simple word it is called “THE NET” .”The NET” means a network which is a combination of various small network.

Internet

An internetwork is the connection of multiple computer networks via a common routing technology using routers.

Internetwork

Routers

THE WORLD WIDE WEB or WWW or WEB is a method of accessing the information over the medium of the internet. Its is used for getting webpage availble over server.

WWW(world wide web)

Back to

Web Browser

A web-based program that displays the Internet

Common Web Browsers

Safari: for Apples

Internet Explorer: for Windows only

Other Web Browsers

Google Chrome: created by Google

Mozilla Firefox: works on Mac & PC

In the mid-1960’s most of the research organization used mainframe computer which were standalone device. The computer manufactured by different companies were unable to communicate with one another. The U.S Department of Defense(DoD) started

Advanced Research Projects Agency(ARPA) in 1957 whose main aim was to find a way to connect computer .This resulted in the development of a small network of connected computer ,called ARPAnet in 1969. It made use of a new packet switching concept for inter-connecting computer that initially linked computer at universities, military organization, government agencies and other research institutions in united states.

History of Internet

How to connect to the Internet

Three main ways to connect to the Internet

1. Dial-Up

2. High Speed/DSL

3. Wireless Connection (Wi-Fi)

Dial-Up Internet Connection

Dial-UpAll you need is a computer, phone-line and Internet Service

Provider! (ISP)

Not as fast as other Internet connections, but often more affordable

ISPInternet

Your computer Landline

High Speed (Cable/DSL)Internet Connection

Travels through fiber-optic cables underground Needs to be connected by a Modem to your computer

Modem: A hub that connects the computer to the Internet

Faster than Dial-up

Wireless Internet Connection (Wi-Fi)

Your computer must be a “Wireless enabled” device

Your computer can pick up signals from different wireless networks

Some networks require passwords or a subscription, others are free

This is what the wireless symbol would look like if your computer was connected

Internet services

In order to connect to the Internet, you need to use an Internet service. Internet service provides a way for data to be transferred from Internet servers to your computer. An Internet service provider is a company that provides access to the Internet. Most ISPs require you to subscribe in order to use their services, but there are ways to connect to the Internet for free. Some of the most common ways to connect to the Internet are communication service, information retrival, web service and www services.

Communication services A communications service provider or CSP a service

provider that transports information electronically, for example a telecommunications service provider. The term encompasses public and private companies in the telecom (landline and wireless), Internet, cable, satellite, and managed services businesses

Communication services

Email service

Instant messaging

Email serviceE-mail stand for electronic mail. It is very helpful method on the internet to exchange the message to all over the world. We can say it is exchange of electronic message between computer that are connected to internet .

Instant messaging

Abbreviated IM, a type of communications service that enables you to create a kind of private chat room with another individual in order to communicate in real time over the Internet, analogous to a telephone conversation but using text-based, not voice-based, communication. Typically, the instant messaging system alerts you whenever somebody on your private list is online. You can then initiate a chat session with that particular individual.

Information Retrieval

Information retrieval is the activity of obtaining information resources relevant to an information need from a collection of information resources. Searches can be based on metadata or on full-text (or other content-based) indexing.

Example – FTP, Telnet , Remote Logins

Web serviceWeb service is used to transmit one application data to another application on a network.

Webservice is usually created with the help of language XML.

For example – GPS service on mobile connected to google server. Web service will transfer the coordinates using mobile gps service to google server and retrieve location of area.

World wide web(WWW)

<back>

Continue WWW

ADVANTAGES OF INTERNET

Powerful search engines.

Ability to do research from your home versus research libraries.

 Information at various levels of study. Everything from scholarly articles to ones directed at children.

Message boards where people can discuss ideas on any topic. Ability to get wide range of opinions. People can find others that have a similar interest in whatever they are interested in.

The internet provides the ability of emails. Free mail service to anyone in the country.

Platform for products like SKYPE, which allow for holding a video conference with anyone in the world who also has access. 

Things such as Yahoo Answers and other sites where kids can have readily available help for homework

Disadvantages of internet

There is a lot of wrong information on the internet. Anyone can post anything, and much of it is garbage.

There are predators that hang out on the internet waiting to get unsuspecting people in dangerous situations.

Some people are getting addicted to the internet and thus causing problems with their interactions of friends and loved ones.

It can be quite depressing to be on the internet and realize just how uneducated so many people have become in today 's society

There are a lot of unscrupulous businesses that have sprung up on the internet to take advantage of people.

Hackers can create viruses that can get into your personal computer and ruin valuable data.

Hackers can use the internet for identity theft.

Thank you