Unit Summary:
A network connects computers and devices so they can share information like pictures, messages, and games.
The Internet is a giant network of networks connecting people all over the world.
In the past, before the Internet, people shared information slowly using tapes and mail. ARPANET was the first big step toward building the Internet.
The World Wide Web (WWW), created by Timothy Berners-Lee in 1989, helped people easily connect and share information online using hyperlinks.
The Internet grew quickly with new web browsers like Mosaic and Netscape, leading to the websites, videos, and online games we use today.
The Internet is used for many purposes like learning, communication, entertainment, shopping, navigation, staying updated, and working.
Important Internet-related terms include: Internet, World Wide Web (WWW), website, URL, web browser, server, client, cookie, cache, ISP, router, firewall, download, and upload.
An Internet Service Provider (ISP) is a company that helps users connect to the Internet. Examples include Jio, Airtel, and BSNL.
A web browser has important features like the URL bar, refresh button, stop button, home button, tabs, and bookmarks that help users navigate the Internet.
A search engine is a tool like Google or Bing that helps find information quickly by typing keywords.
Students learn how to use a search engine by opening a browser, typing what they want to find, reviewing results, and clicking on helpful links.
Unsafe use of the Internet can cause problems such as cyber attacks, privacy issues, online bullying, fake news, scams, feeling bad about oneself, arguments online, and loss of time and real-world friendships.
Students are encouraged to use the Internet safely and wisely, protecting their information and behavior online.
