Introduction To Internet

• What is the Internet?1. The internet in simple terms is a network of the

interlinked computer networking worldwide, which is accessible to the general public. These interconnected computers work by transmitting data through a special type of packet switching which is known as the IP or the internet protocol.

History of INTERNET

• ARPANET was the network that became the basis for the Internet. Based on a concept first published in 1967, ARPANET was developed under the direction of the U.S. Advanced Research Projects Agency (ARPA).

• In 1969, the idea became a modest reality with the interconnection of four university computers. The initial purpose was to communicate with and share computer resources among mainly scientific users at the connected institutions.

Some Basic Internet Definition

• ARPANet - The precursor to the Internet.• ASCII - American Standard Code for Information

Interchange. The de facto world wide standard code for alphanumeric characters.

• Blacklist - Describes inappropriate advertisers on Usenet newsgroups and via junk E-mail.

• Browser - A program that is specifically used to look at various WWW resources.

• Client - Any computer that makes use of services available from other computers.

Some Basic Internet Definition

• Domain Name - A unique name that identifies an Internet site. The name always has two or more parts separated by a dot. The last part of the name identifies the site ( i.e. gov for government, edu for education, com for commercial, or net for network). An electronic street address.

• E-mail - Messages, usually text, sent from one person to another via a computer.

• Fire Wall - A combination of hardware and software that separates a LAN into two or more parts for security purposes.

Some Basic Internet Definition• Host - A computer or software package which provides

a specific kind of service to other computers. One that is seen by other computers on the Internet.LAN - Local Area Network. Several computers located in the same physical location which are connected together in order to share information and services.

• Modem - A device that allows a computer to use a phone line to communicate with another computer.

• Protocol - The rules of conduct which enables a computer to communicate with another computer.PPP - A protocol that allows a computer to use a telephone line and a modem to make TCP/IP connections.

Some Basic Internet Definition

• Server - Any computer that makes services available to other computers.

• TCP/IP - Transmission Control Protocol/Internet Protocol. This is the protocol which defines the Internet.

• URL - Uniform Resource Locator. A unique name that identifies an Internet site.

• WWW - World Wide Web. The universe of hypertext servers.

What is the difference between the World Wide Web and the Internet?

• The World Wide Web (The Web) is only a portion of what makes up the internet, but it is the fastest growing part of the internet. The Web lets people, organizations and companies publish information for other people to see. This makes the Web a very useful tool for finding information on just about any topic.

• The Web is a large number of computer documents or "Web pages" that are stored on computers around the world and are connected to one another using hyperlinks. These Web pages can be seen by anyone through their computer's "Web Browser," which is the program you are using now.

Cont.

• A group of Web pages that follow the same theme and are connected together with hyperlinks is called a "Web site." Web sites and Web pages are written in a coding language that makes it possible to add pictures, sound and interactivity to plain old text, making people's reading experience more exciting.

Web Browsers

• Web browsers are programs used to explore the Internet. There are many Web browser programs available including Netscape Navigator, Internet Explorer and Opera. Internet Explorer is the Internet browser made by Microsoft and comes with Windows operating system.

Search Engine

• A Web Search Engine is designed to search for information on the World Wide Web.

• The search results are generally presented in a line of results often referred to as search engine results pages (SERPs).

• The information may be a specialist in web pages, images, information and other types of files.

Search Engines

• Google – is the most popular search engine in the world, and a

multinational, publicly-traded organization built around the company's hugely popular search engine.

– User can search for any information by writing what he is looking for in the search text box.

– Google can view the searched information as a web pages, pictures and there is a part for Maps, YouTube, and news.

– Google have it’s own E-Mail Application called “Gmail”.

E-Mail

• Email, sometimes written as e-mail, is simply the shortened form of “electronic mail,” a system for receiving, sending, and storing electronic messages.

• It has gained nearly universal popularity around the world with the spread of the Internet. In many cases, email has become the preferred method for both personal and business communication