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Internet and Web

CBSE · Class 12 · Informatics Practices

Quick revision notes for Internet and Web — CBSE Class 12 Informatics Practices. Key concepts, formulas, and definitions for last-minute revision.

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Key Topics to Revise

1

Computer Networks and Types of Networks

  • A network is a group of two or more similar things or people interconnected with each other.
  • A computer network is an interconnection among two or more computers or computing devices.
  • A network allows sharing of data and resources among connected devices.
2

Network Devices

  • Networking devices such as modem, hub, switch, repeater, router, and gateway are used to connect devices and manage communication.
  • Modem stands for MOdulator DEMolulator.
  • A modem converts digital data into analog signals at the sender end and analog signals into digital data at the receiver end.
3

Networking Topologies

  • The arrangement of computers and peripherals in a network is called topology.
  • Common network topologies are mesh, ring, bus, star, and tree or hybrid.
  • In mesh topology, each communicating device is connected with every other device.
4

Internet and World Wide Web

  • The Internet is a huge global network of interconnected computers that may or may not have any file or webpage to share.
  • The World Wide Web or web is a collection of interlinked web pages and web resources accessible over the Internet.
  • Many people confuse the web with the Internet.

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Full Notes

Key Concepts

A network is a groupLAN covers a small geographical areaModem stands for MOdulator DEMolulatorAn Ethernet cardA repeater is an analog device

Frequently Asked Questions

What are the important topics in Internet and Web for CBSE Class 12 Informatics Practices?
Internet and Web covers several key topics that are frequently asked in CBSE Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Internet and Web — CBSE Class 12 Informatics Practices?
Understand the core concepts first, then work through the 60 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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