Internet and Web | Class 12 Informatics Practices Notes
By ConceptScroll Team · Published on 17 July 2026 · 2 min read
Internet and Web – this guide gives you a concise, exam-ready overview of Internet and Web from Class 12 Informatics Practices, written by ConceptScroll editors and reviewed against the latest NCERT textbook.
5.6 APPLICATIONS OF INTERNET
The Internet provides a wide range of services facilitating communication, information sharing, and entertainment. Key applications include the World Wide Web (WWW), electronic mail (email), chat or instant messaging, and Voice over Internet Protocol (VoIP). The WWW is a vast collection of interlinked web pages accessible via the Internet, invented by Tim Berners-Lee in 1990. It uses technologies like HTML for page design, URI/URL for resource identification, and HTTP/HTTPS protocols for data transfer. Email enables sending and receiving messages and attachments globally at any time. Chat allows real-time text communication between individuals or groups, often including audio and video calls, supported by applications like WhatsApp, Skype, and Facebook Messenger. VoIP transmits voice calls over the Internet by converting analog voice signals into digital data, offering cost-effective and portable telephony. However, VoIP call quality depends on Internet speed. These applications have transformed how people communicate, access information, and conduct business worldwide.
🔗 Connection: Following the applications, the chapter explains the structure and types of web pages and websites.
Frequently asked questions
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Pointer
What is a network in the context of computer networks and give two examples of networks found in everyday life?
A network is a group of two or more similar things or people interconnected with each other. For example, social networks and mobile networks are common networks in everyday life.
Identify the structure labelled as 'nodes' in a computer network and explain their role.
Nodes are devices such as servers, desktops, laptops, or mobile phones that are part of a computer network. They can receive, create, store, or send data to other nodes in the network.
Which of the following devices can be considered a node in a data communication network?
All of the above
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