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4.1 The Internet

Part of Big Idea 4: Computer Systems and Networks in AP® Computer Science Principles. Read the opening section, then create a free account for the full interactive lesson, practice, and progress tracking.

The Role of the Internet in Modern Computing

The Internet is one of the most transformative inventions in human history, facilitating an unprecedented level of communication and data exchange. It connects millions of computing devices, such as smartphones, tablets, laptops, servers, routers, and smart sensors, allowing them to communicate with each other over a vast network. The Internet serves as the foundation for much of modern life, from daily tasks like browsing websites to crucial activities like online banking, communication, and accessing remote services.

These devices work together as a computing system, where each device serves a specific function in the exchange of data. For example, servers store data and provide services, while routers manage the routing of data across the network. Without this interconnected infrastructure, modern communication, commerce, and entertainment would not be possible.

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