End-of-course MCQ
70 questions · 2 hours · 70%
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AP Computer Science Principles exam prep
Prepare for the end-of-course multiple-choice exam and Create performance task through algorithms, data, networks, systems, impacts, and clear written responses.
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AP Computer Science Principles exam format
Fully digital + Create task. Formats can change, so verify the linked official page before exam day.
Official College Board exam page ↗Create task and written response
Through-course program + exam responses · 30%
AP Computer Science Principles unit roadmap
Each unit is a connected part of the course, not an isolated chapter. The focus says what you must know and the weighting says how much exam time it is worth. Use the weighting to order your review, never as permission to skip a prerequisite.
Creative Development
Program purpose, collaboration, iterative design
- Define the vocabulary you need to explain program purpose, collaboration, iterative design.
- Draw and label the graph, model, diagram, or evidence that best represents creative development.
- Solve one direct creative development question, then change one assumption and predict how the answer moves.
- Tie this unit to the course priority: Create-task evidence capture
Data
Binary, compression, abstraction, data analysis
- Define the vocabulary you need to explain binary, compression, abstraction, data analysis.
- Draw and label the graph, model, diagram, or evidence that best represents data.
- Solve one direct data question, then change one assumption and predict how the answer moves.
- Tie this unit to the course priority: List and procedure requirements
Algorithms and Programming
Variables, lists, procedures, algorithms, simulation
- Define the vocabulary you need to explain variables, lists, procedures, algorithms, simulation.
- Draw and label the graph, model, diagram, or evidence that best represents algorithms and programming.
- Solve one direct algorithms and programming question, then change one assumption and predict how the answer moves.
- Tie this unit to the course priority: Algorithm tracing
Computer Systems and Networks
Internet protocols, fault tolerance, parallel computing
- Define the vocabulary you need to explain internet protocols, fault tolerance, parallel computing.
- Draw and label the graph, model, diagram, or evidence that best represents computer systems and networks.
- Solve one direct computer systems and networks question, then change one assumption and predict how the answer moves.
- Tie this unit to the course priority: Internet protocols
Impact of Computing
Bias, privacy, security, digital divide
- Define the vocabulary you need to explain bias, privacy, security, digital divide.
- Draw and label the graph, model, diagram, or evidence that best represents impact of computing.
- Solve one direct impact of computing question, then change one assumption and predict how the answer moves.
- Tie this unit to the course priority: Ethical impact tradeoffs
Use a diagnostic to find the first knowledge gap
This short check is not a score prediction. It identifies which part of the course deserves your next focused session.
- Answer without notes.
- Explain your choice before revealing feedback.
- Record every uncertain answer, including lucky guesses.
Question 1 of 3
Scored skills for the AP Computer Science Principles exam
Knowing an idea internally is not enough. Practice producing observable evidence under time pressure.
Design and evaluate computational solutions
Develop and analyze algorithms
Abstract program complexity
Analyze data and computing impacts
Explain a personally developed program
Highest-value review targets
- Create-task evidence capture
- List and procedure requirements
- Algorithm tracing
- Internet protocols
- Ethical impact tradeoffs
AP Computer Science Principles formulas and reference relationships
A useful sheet records meaning and conditions, not isolated symbols. Rebuild it from a blank page until every line comes back with its conditions attached.
Binary place value
\[(b_nb_{n-1}\ldots b_0)_2=\sum_{k=0}^n b_k2^k\]
What it tells you: Converts a binary bit pattern into its nonnegative integer value.
Use it when: Each $b_k$ is $0$ or $1$; signed and floating representations need additional conventions.
Example: $10110_2=16+4+2=22$.
Maximum unsigned value
\[\text{max}=2^n-1\]
What it tells you: Finds the largest unsigned integer representable with $n$ bits.
Use it when: The representation must be unsigned and use exactly $n$ binary digits.
Example: $8$ bits represent values from $0$ through $255$.
Compression ratio
\[\text{ratio}=\frac{\text{original size}}{\text{compressed size}}\]
What it tells you: Compares storage before and after compression.
Use it when: Use the same size units and distinguish ratio from percent reduction.
Example: $10$ MB compressed to $2$ MB has a $5:1$ ratio and $80\%$ reduction.
Parallel speedup limit
\[\text{speedup}=\frac{T_{\mathrm{sequential}}}{T_{\mathrm{parallel}}}\]
What it tells you: Measures how parallel execution changes completion time.
Use it when: Communication and sequential portions limit attainable speedup.
Example: $100$ seconds reduced to $25$ seconds is a fourfold speedup.
What the AP Computer Science Principles exam hands you, and what you have to recall
| Section or part | What you may use | What that means for your work |
|---|---|---|
| End-of-course multiple choice | No calculator | Binary, compression ratios, and speedup are all small mental arithmetic. |
| Provided during the exam | Exam Reference Sheet | The pseudocode language is given to you. It is not Python or JavaScript, and reading it as if it were is a common way to lose easy points. |
| Create Performance Task | Not applicable | Built during the course on a computer, submitted before exam day, and scored separately. |
Anything the table does not hand you, you have to remember. The AP Computer Science Principles study plan puts these rules on a week-by-week schedule.
Your AP Computer Science Principles preparation plan
Repeat this loop weekly: retrieve, diagnose, repair, mix, time, and reflect.
01
AP-style practice
Original questions, immediate explanations, and local progress.
Start →02Full course test
A timed mixed-unit test with a complete answer review.
Test →03Study plan and strategy
Eight weeks, plus the timing, calculator, and task-verb decisions.
Plan →04Unit roadmap
Every unit, its weighting, and what mastery looks like.
Review →05Formula review
Key relationships, their conditions, and what the exam provides.
Recall →Questions about the AP Computer Science Principles exam
Can I use a calculator on the AP Computer Science Principles exam?
Rules change from section to section. End-of-course multiple choice: no calculator. Provided during the exam: Exam Reference Sheet. Create Performance Task: not applicable. Practise each section under its own rule.
How long is the AP Computer Science Principles exam?
End-of-course multiple choice: 2 hours, 70 questions. Create Performance Task: Through-course, Program plus written responses. End-of-course multiple choice — About 1.7 minutes each. Code-tracing items are slower, so bank time on the vocabulary and impact items. Create Performance Task — Done during the year, not on exam day. Start it early enough to record the video and write the responses without rushing.
How many units does AP Computer Science Principles cover?
Five: Creative Development, Data, Algorithms and Programming, Computer Systems and Networks, Impact of Computing. The roadmap on this page publishes no percentage weighting for them, so order your review by course priority instead, starting with create-task evidence capture.
Is a formula sheet given on the AP Computer Science Principles exam?
Yes. The AP Computer Science Principles exam gives you the Exam Reference Sheet. The pseudocode language is given to you. It is not Python or JavaScript, and reading it as if it were is a common way to lose easy points.
Use AI responsibly during AP exam preparation
Attempt first. Ask for a hint or critique. Close the explanation and solve again from memory. Never use outside help on a live or prohibited assessment.
Turn the guide into exam-day skill
Start a focused AP Computer Science Principles practice set, check each explanation, and use every miss to choose your next review session.
MathGPT.now is independent and is not affiliated with or endorsed by College Board. Exam formats can change.
Verify AP Computer Science Principles information on AP Central ↗