The Internet

Chloe Evans

7 min read

Listen to this study note

Study Guide Overview

This study guide covers the Internet, focusing on its structure as a network of networks, distinct from the World Wide Web. It explains how data travels through packets, routing, and concepts like bandwidth. Key protocols like TCP/IP and UDP are compared. The guide also emphasizes the World Wide Web's function, HTTP protocol, and the importance of scalability. Finally, it provides practice questions and exam tips.

#AP Computer Science Principles: The Internet - Your Ultimate Study Guide 🚀

Hey there, future AP Computer Science Principles rockstar! This guide is your go-to resource for acing the exam, especially when you're reviewing the night before. Let's dive in and make sure you're feeling confident and ready to go!

#1. The Internet: A Network of Networks 🌐

#What is the Internet?

The Internet is essentially a massive computer network made up of interconnected networks that all use standardized, open communication protocols. Think of it as a "network of networks." The term itself comes from interconnection of networks.

Key Concept

The Internet is not the same as the World Wide Web (more on that later!). The Internet provides the infrastructure, while the Web is a service that runs on top of it.

#Computing Devices, Systems, and Networks

Computing Device: Any physical machine that can run a program. Examples include computers, tablets, servers, and even smart sensors like a smart thermometer. 📱💻
Computing System: A group of computing devices that work together. The main type we're focusing on is a computer network.
Computer Network: A group of computing devices that can share data. It can be as simple as your printer connected to your computer or as complex as a city-wide network.

Quick Fact

The Internet is the largest computer network in the world, connecting billions of users across multiple continents. 🌍

#2. How Data Travels: Data Streams, Packets, and Routing 🚦

#Data Streams and Packets

Data Streams: Information that flows through the internet. Remember, data is just a collection of facts stored as bits.
Packets: Data is broken down into packets before being sent over the internet. Each packet contains:
- A piece of the data.
- A header with metadata (data about data), including: the origin, destination, and instructions ...

How are we doing?

Give us your feedback and let us know how we can improve

Previous Topic - Big Idea 4 Overview: Computer Systems and Networks Next Topic - Fault Tolerance