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The Internet

AP CSP: BI 6, EU 6.1, EU 6.2, EU 6.3, EU 7.3

Introducing the internet

AP CSP: BI 6, EK 6.1.1A, EK 6.1.1D, EU 6.1, LO 6.1.1
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What is the Internet?
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The ingredients of the Internet
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Wires & WiFi: Physical network connections

AP CSP: BI 6, EK 2.1.1B, EK 2.1.1C, EK 6.2.2I, EK 6.2.2J, EK 6.2.2K, EU 6.2, LO 6.2.2
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How can we physically connect two computers?
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Wires, cables, and WiFi
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Transporting bits over wires
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Practice
Transporting bits over wiresGet 3 of 4 questions to level up!

IP & DNS: Scalable internet addressing

AP CSP: BI 6, EU 6.1, EU 6.2, EU 6.3, LO 6.1.1, LO 6.2.2, LO 6.3.1
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How do computers find each other?
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IP addresses and DNS
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IP addresses
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Domain Name System (DNS)
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Practice
IP addressesGet 3 of 4 questions to level up!
Domain name system (DNS)Get 3 of 4 questions to level up!

TCP/IP: Reliable data transmission

AP CSP: BI 6, EK 6.2.1D, EK 6.2.2A, EK 6.2.2B, EK 6.2.2F, EK 6.2.2G, EU 6.2, LO 6.2.1, LO 6.2.2
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How can computers send data reliably?
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Packets, routers, and reliability
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Internet routing protocol
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Transmission Control Protocol (TCP)
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Practice
Internet routing protocolGet 3 of 4 questions to level up!
Transmission Control Protocol (TCP)Get 3 of 4 questions to level up!

TLS: Secure data transport

AP CSP: BI 6, EK 6.2.2H, EK 6.3.1H, EK 6.3.1I, EK 6.3.1J, EK 6.3.1K, EK 6.3.1L, EK 6.3.1M, EU 6.2, EU 6.3, LO 6.2.2, LO 6.3.1
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How can computers send private data?
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Encryption and public keys
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Encryption, decryption, and cracking
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Symmetric encryption techniques
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Public key encryption
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Transport Layer Security (TLS)
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Practice
Symmetric encryptionGet 3 of 4 questions to level up!
Public key encryptionGet 3 of 4 questions to level up!
Transport Layer Security (TLS)Get 3 of 4 questions to level up!

HTTP & HTML: Global document & data sharing

AP CSP: BI 6, EK 6.2.2H, EK 6.3.1M, EK 7.3.1G, EK 7.3.1H, EU 6.2, EU 6.3, EU 7.3, LO 6.2.2, LO 6.3.1, LO 7.3.1
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What is the world wide web?
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HTTP and HTML
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Hypertext Transfer Protocol (HTTP)
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HTTP Secure (HTTPS)
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Privacy on the web
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Practice
Hypertext Transfer Protocol (HTTP)Get 3 of 4 questions to level up!
HTTP Secure (HTTPS)Get 3 of 4 questions to level up!
Privacy on the webGet 3 of 4 questions to level up!

Cybercrime and prevention

AP CSP: BI 6, EK 6.3.1A, EK 6.3.1C, EK 6.3.1D, EK 6.3.1E, EK 6.3.1F, EK 6.3.1G, EU 6.3, LO 6.3.1
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How does cyber crime happen?
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Cybersecurity and crime
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Computer malware and attacks
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Phishing and password attacks
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Practice
Computer malware and attacksGet 3 of 4 questions to level up!
Phishing and password attacksGet 3 of 4 questions to level up!

About this unit

This unit covers how the internet works. Learn about the physical layer (like WiFi and Ethernet), the protocols (TCP/IP, DNS, HTTP, TLS, HTTPS), encryption techniques, cybersecurity, and privacy. With more than 150 questions, you can practice what you've learned and study for the AP Computer Science Principles exam.
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