AP Computer Science Principles, AP exams, 21–26%

Big Idea 5: Impact of Computing

Big Idea 5 carries the second largest published weighting and is the least technical, which is exactly why it is often underprepared. It covers beneficial and harmful effects of computing innovations, the digital divide, bias built into computing systems, crowdsourcing, legal and ethical concerns, and safe computing practices. Answers here need specific reasoning rather than general opinion.

Position: 5 of 5 units
Published weighting: 21–26% in the official framework
Topics covered: 6 topics in this guide

What is covered

Topics inside this unit.

These topics describe the scope students most often review for this part of AP Computer Science Principles. Treat them as a study checklist rather than an exhaustive list of what a single exam form can sample.

Beneficial and harmful effects: Why the same innovation can produce both, and how effects differ across groups of people.
The digital divide: Unequal access to computing by geography, income, and other factors, and its consequences.
Computing bias: How bias enters through data, design choices, and assumptions, whether intentionally or not.
Crowdsourcing: Using distributed contributions to solve problems, and the strengths and limits of the approach.
Legal and ethical concerns: Intellectual property, licensing including open source and Creative Commons, and plagiarism.
Safe computing: Personally identifiable information, encryption, authentication, phishing, and malware.

Study tips

How to practice Impact of Computing.

Section-specific guidance that follows from how this material is usually tested.

Prepare specific examples rather than general statements; the exam rewards a named innovation with a named effect.
Practice arguing both a benefit and a harm for the same innovation, which is a standard question shape.
Do not skip this big idea because it feels easy; it carries the second largest published weighting.

Where this fits

Big Idea 5: Impact of Computing is 5 of 5 units in the AP Computer Science Principles guide, and it carries a published weighting of 21–26% in the official framework. Use the full guide to balance it against everything else you have to review.

Back to the AP Computer Science Principles guide Official exam information

Sample Impact of Computing questions

Practice questions, not yet expert-reviewed

Original practice questions written to the published framework for this section. No expert has reviewed them, and they are not taken from any official exam. Try each one before you open the answer.

Question 1Foundational
Residents of a rural community have much slower internet access than residents of a nearby city, which limits their use of online services. Which concept does this situation illustrate?
1. AThe digital divide
2. BComputing bias
3. CCrowdsourcing
4. DPhishing
Show answer
Answer: A. The digital divide
The digital divide is unequal access to computing and the internet across geography, income, and other factors, which is exactly what separates these two communities. Computing bias concerns unfair outcomes produced by a system, not unequal access to it.
Key insight: The digital divide is about who can use computing at all; bias is about how a system treats those who do.
Question 2Foundational
An email that appears to come from a bank asks the recipient to follow a link and enter their account password. What is this kind of attack called?
1. APhishing
2. BA firewall
3. CMultifactor authentication
4. DOpen source licensing
Show answer
Answer: A. Phishing
Phishing uses a trustworthy-looking message to trick a person into revealing credentials or other personal information, so the attack targets the user rather than the software. Firewalls and multifactor authentication are defenses, not attacks.
Key insight: Phishing attacks people, not code, which is why technical defenses alone cannot stop it.
Question 3Intermediate
A navigation application improves its route suggestions by collecting traffic reports contributed by many drivers using the app. What is this practice called?
1. ACrowdsourcing
2. BData compression
3. CThe digital divide
4. DSymmetric encryption
Show answer
Answer: A. Crowdsourcing
Crowdsourcing gathers contributions from a large, distributed group to solve a problem no single contributor could solve alone. Its quality depends on who participates, so coverage can be poor where few users contribute.
Key insight: Crowdsourced data is only as representative as the crowd that supplies it.
Question 4Intermediate
A company builds a resume-screening program using records of its own past hiring decisions, which favored one group of applicants. Why might the program produce biased results?
1. ABias present in the data used to build the program is reproduced in its output
2. BPrograms cannot be biased, because they only perform arithmetic
3. CThe bias is caused by syntax errors in the program
4. DBias can only enter a program through a deliberate choice by the programmer
Show answer
Answer: A. Bias present in the data used to build the program is reproduced in its output
A program built from biased historical data learns the patterns in that data, including unfair ones, so it repeats them at scale without anyone intending it. Bias can enter through data, design choices, or unexamined assumptions, which is why it is not limited to deliberate acts.
Key insight: Computing bias is usually inherited from data and design decisions rather than intended by anyone.
Question 5Advanced
A photographer publishes a photo under a Creative Commons license that permits reuse with attribution. What does that license allow another person to do?
1. AReuse the photo as long as the photographer is credited as the license requires
2. BReuse the photo only after paying a licensing fee
3. CNothing, because the photo remains fully protected by copyright
4. DClaim authorship of the photo
Show answer
Answer: A. Reuse the photo as long as the photographer is credited as the license requires
A Creative Commons license is the copyright holder granting specific permissions in advance, and an attribution license grants reuse on the condition that credit is given. The creator still holds copyright, so claiming authorship is never permitted and no separate fee is required.
Key insight: Creative Commons does not remove copyright; it states in advance what reuse the holder permits.

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Big Idea 5: Impact of Computing