AP CSP Day 21: Cybersecurity Basics

Big Idea 4: Computing Systems & Networks
Cycle 1 • Day 21 Practice • Medium Difficulty
Focus: Encryption & Security Tradeoffs

Practice Question

A website uses HTTPS instead of HTTP. Which of the following best describes what HTTPS provides?

Why This Answer?

HTTPS uses TLS/SSL encryption to protect data during transmission between the browser and server. This prevents third parties from reading or tampering with the data while it travels across the network.

Why Not the Others?

A) HTTPS can add slight overhead due to encryption processing; it does not make sites faster. C) HTTPS secures the communication channel but does not scan or prevent malware on the site itself. D) HTTPS protects data in transit — it says nothing about the truthfulness or accuracy of the website's content.

Common Mistake
Watch Out!

Students think the padlock icon (HTTPS) means a website is completely safe or trustworthy. HTTPS only protects data in transit — it does not verify content quality or prevent all security threats.

AP Exam Tip

HTTPS = encrypted connection. It protects data IN TRANSIT only. A malicious website can still use HTTPS. Do not equate HTTPS with overall website safety.

Keep Practicing!

Consistent daily practice is the key to AP CSP success.

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