Class 12 Computer Science — Chapter 10: Computer Networks

What you'll learn

• ▸Fundamentals of Computer Networks
• ▸Evolution of Networking
• ▸Classification of Networks by Scale
• ▸Local Area Network (LAN) Characteristics
• ▸Wide Area Network (WAN) Concepts
• ▸Metropolitan Area Network (MAN)
• ▸Modem (Modulator-Demodulator)
• ▸Ethernet Card (NIC)

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 interconn…

Practice Questions from this Chapter

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

1. Explain network topology simply. Get Solution →
2. Show examples of network nodes. Get Solution →
3. Compare LAN, MAN, WAN benefits. Get Solution →
4. What is an interconnection among two or more computers or computing devices called? Get Solution →
5. In a network, what are the smaller chunks that data is divided into for communication called? Get Solution →
6. What does LAN stand for? Get Solution →
7. What network was commissioned by the U.S. Department of Defence in the 1960s and was a precursor to the internet? Get Solution →
8. What does a Modem do at the receiver's end? Get Solution →

Did you know?

• 💡 The very first message sent over ARPANET only transmitted two letters before crashing.
• 💡 Thousands of kilometers of undersea cables carry most of the world's internet traffic.
• 💡 The '@' symbol was chosen for email addresses to mean 'at' a specific network location.
• 💡 Wi-Fi does not actually stand for 'Wireless Fidelity' despite popular belief.
• 💡 The entire Internet is estimated to weigh no more than a single strawberry.

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