How many questions should I practice for Unit 1?

Aim to complete all 50 questions in this set, then review any you missed. Quality matters more than quantity—understand why each answer is correct.

What error types appear on the AP CSP exam?

Know four types: syntax errors (prevent running), logic errors (wrong output), runtime errors (crash during execution), and overflow errors (number exceeds range).

How do I identify boundary test cases?

Test at minimum, maximum, and just beyond those limits. For a valid range of 1-100, test: 0, 1, 100, 101. This catches off-by-one errors.

What is pair programming?

Two programmers work together at one computer. The driver writes code while the navigator reviews each line. They switch roles regularly.

How is iterative different from incremental development?

Iterative refines the whole product through repeated Build→Test→Reflect→Revise cycles. Incremental builds one feature at a time, completing each before adding the next.

What should I document in my program?

Document what code does and why, how it was developed, and acknowledge any code from other sources including the origin and author.

What counts as input in a program?

Input includes tactile (keyboard, mouse), audio (microphone), visual (camera), and text data. Events like clicks and key presses also provide input.

Why is hand tracing useful?

Hand tracing means stepping through code line by line with sample inputs, tracking variable values on paper. It helps identify exactly where logic errors occur.

AP CSP Unit 1 Practice Questions

AP CSP Unit 1: Practice Questions

50 questions covering Collaboration, Program Function, Design, and Debugging

0/50

Total Score

0/12

Topic 1.1

0/14

Topic 1.2

0/14

Topic 1.3

0/10

Topic 1.4

0/20

Easy

0/20

Medium

0/10

Hard

❓ Practice Tips FAQ

How many questions should I practice?+

Complete all 50 questions, then review missed ones. Focus on understanding why each answer is correct rather than just memorizing.

What error types appear on the exam?+

Know four types: syntax (won't run), logic (runs but wrong output), runtime (crashes during execution), overflow (number exceeds range).

How do I approach boundary testing questions?+

Test at min, max, and just beyond. For range 1-100, test: 0, 1, 100, 101. This catches off-by-one errors.

What's the difference between iterative and incremental?+

Iterative refines the whole product through cycles. Incremental builds one complete feature at a time before adding the next.

📚 About This Practice Set

Created by NUM8ERS Institute & Education LLC Dubai, aligned with the official College Board AP CSP curriculum.

Official references:

College Board AP CSP (Official reference) AP CSP CED (Official reference)

More resources:

AP CSP Course Hub Unit 1 Study Guide Create Performance Task