Class 12 Computer Science — Chapter 10: Computer Networks

What you'll learn

• ▸Fundamentals of Computer Networks
• ▸Evolution of Networking
• ▸Types of Networks (PAN, LAN, MAN, WAN)
• ▸Local Area Network (LAN) Characteristics
• ▸Wide Area Network (WAN) and The Internet
• ▸Network Devices: Modem

Chapter Summary

--- PAGE 1 --- Chapter 10 Computer Networks "Hoaxes use weaknesses in human behavior to ensure they are replicated and distributed. In other words, hoaxes prey on the Human Operating System." – Stewart Kirkpatrick In this Chapter » Introduction to Computer Networks » Evolution of Networking » Types of Networks » Network Devices » Networking Topologies » Identifying Nodes in a Networked Communication » Internet, Web and the Internet of Things » Domain Name System 10.1 INTRODUCTION TO COMPUTER NETWORKS We are living in a connected world. Information is being produced, exchanged, and traced across the globe in real time. It's possible as almost everyone and everything in the digital world is interconnected through one way or the other. Figure 10.1: Interconnection forming a social network Reprint 2025-26 --- PAGE 2 --- Activity 10.1 Identify some other networks in the real world. A group of two or more similar things or people interconnected with each other is called network (Figur…

Practice Questions from this Chapter

Tap "Get Solution" on any question to ask our AI tutor.

1. Explain Wi-Fi simply. Get Solution →
2. Show the global internet cable map. Get Solution →
3. Describe the Internet of Things. Get Solution →
4. What is a computer network? Get Solution →
5. In a network, data is divided into smaller chunks for communication. What are these chunks called? Get Solution →
6. What was the name of the pioneering network commissioned by the U.S. Department of Defence in the 1960s? Get Solution →
7. What does PAN stand for in the context of computer networks? Get Solution →
8. What is the approximate geographical range of a Personal Area Network (PAN)? Get Solution →

Did you know?

• 💡 The first message sent over ARPANET was 'LO' because the system crashed.
• 💡 Most of the internet's data travels through cables under the ocean.
• 💡 The @ symbol became part of email addresses back in 1971.
• 💡 A single human hair is wider than the core of a fiber optic internet cable.
• 💡 More than 5 billion people around the world now use the internet daily.

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