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ICT Class 8 - Networking Notes

Comprehensive study notes for Class 8 - Networking olympiad preparation

Networking

Welcome to the chapter on Networking for Class 8. In this chapter, you will learn what computer networks are, why they are important, and how they work. By the end of this chapter, you will understand the basics of networking, types of networks, and how data is shared between computers!

Introduction

Networking means connecting two or more computers so they can share information and resources. Networks help us communicate, share files, and use devices like printers together.

What is a Computer Network?

A computer network is a group of computers linked together. These computers can share data, files, and hardware devices.

  • Examples: School computer lab, office computers, the Internet.

Types of Networks

  • LAN (Local Area Network): Connects computers in a small area like a room or building.
  • WAN (Wide Area Network): Connects computers over large distances, like cities or countries.
  • MAN (Metropolitan Area Network): Connects computers in a city or town.

Network Devices

  • Router: Connects different networks and directs data.
  • Switch: Connects computers within a network.
  • Hub: Connects multiple computers in a network.
  • Modem: Connects computers to the Internet.

Wired and Wireless Networks

  • Wired Network: Uses cables to connect computers.
  • Wireless Network: Uses Wi-Fi or radio signals to connect computers without cables.

Internet and Its Uses

  • The Internet is the largest network in the world.
  • We use the Internet to send emails, browse websites, watch videos, and chat with friends.

Advantages of Networking

  • Share files and data easily.
  • Use printers and other devices together.
  • Communicate quickly with others.
  • Access information from anywhere.

Fun Activity: Draw a Network!

Draw a picture showing computers, a printer, and a router connected together. Label each part!

Summary

  • Networking connects computers to share information and resources.
  • LAN, WAN, and MAN are types of networks.
  • Networks can be wired or wireless.
  • The Internet is a global network.

Practice Questions

  1. What is a computer network?
  2. Name two types of networks.
  3. What does a router do?
  4. What is the difference between wired and wireless networks?
  5. List two uses of the Internet.

Challenge Yourself

  • List three devices used in networking.
  • Draw and label a simple LAN setup for your school computer lab.

Did You Know?

  • The Internet connects millions of computers all over the world!
  • Wi-Fi lets you connect to a network without any wires.

Glossary

  • Network: A group of computers connected together.
  • Router: A device that connects networks and directs data.
  • LAN: Local Area Network.
  • WAN: Wide Area Network.
  • Wireless: Without wires or cables.

Answers to Practice Questions

  1. A group of computers connected together to share information and resources.
  2. LAN and WAN (also MAN).
  3. It connects networks and directs data between them.
  4. Wired uses cables; wireless uses Wi-Fi or radio signals.
  5. Send emails, browse websites (any two: watch videos, chat, etc.).

Networking helps us stay connected and share information easily. Explore more about networks and the Internet!

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