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AP CSA Unit 2 MCQ Practice: Selection & Iteration

AP CSA Unit 2 MCQ Practice: Selection and Iteration

Practice Boolean expressions, conditionals, loops, algorithms, and nested iteration for AP Computer Science A Unit 2.

AP CSA Unit 2: Selection and Iteration

Unit 2: Selection and Iteration focuses on how Java programs make decisions, repeat instructions, and implement algorithms. The current College Board framework includes 12 topics, covering Boolean expressions, selection statements, loops, algorithms, nested iteration, and informal run-time analysis.

Unit 2 has an approximate 25–35% AP Exam weighting. Use the practice sections below to strengthen your ability to trace Java code, evaluate conditions, follow loop execution, and analyze algorithms.

Practice status: Topics marked Practice Available currently have relevant MCQ practice on JavaTutorOnline. Topics marked Coming Soon are part of the current College Board Unit 2 framework but do not yet have dedicated practice material.

Need personalized help with AP CSA? Work directly with an AP CSA Tutor . For free-response preparation, visit the AP CSA FRQ Practice Hub.

Selection & Boolean Logic

Topics 2.1–2.6 introduce algorithms using selection and repetition, Boolean expressions, if statements, nested if statements, compound Boolean expressions, and comparison of Boolean expressions.

Topic 2.1
Algorithms with Selection and Repetition
Algorithms that use sequencing, selection, and repetition to solve problems and control program execution.
AP CSA Unit 2 Coming Soon
Topic 2.2
Boolean Expressions
Evaluate Boolean expressions, relational operators, logical values, and conditions used to control Java programs.
Practice Available Practice ➔
Topic 2.3
if Statements
Use conditional statements to determine which statements execute based on the value of a Boolean expression.
AP CSA Unit 2 Coming Soon
Topic 2.4
Nested if Statements
Trace conditional logic involving if statements nested inside other conditional structures.
AP CSA Unit 2 Coming Soon
Topic 2.5
Compound Boolean Expressions
Analyze compound conditions using logical operators such as &&, ||, and !.
Practice Available Practice ➔
Topic 2.6
Comparing Boolean Expressions
Compare Boolean expressions and determine whether different logical expressions produce the same results.
Practice Available Practice ➔

Loops & Algorithms

Topics 2.7–2.10 focus on while loops, for loops, selection and iteration algorithms, and algorithms that process String data.

Topic 2.7
while Loops
Trace while loops, evaluate loop conditions, track control variables, and identify iteration counts and termination behavior.
Practice Available Practice ➔
Topic 2.8
for Loops
Practice for-loop initialization, Boolean conditions, updates, counting patterns, scope, and boundary conditions.
Practice Available Practice ➔
Topic 2.9
Implementing Selection and Iteration Algorithms
Practice tracing algorithms that combine conditions and repetition, including accumulators, counters, and repeated processing.
Practice Available Practice ➔
Topic 2.10
Implementing String Algorithms
Trace algorithms that process Strings character by character using loops, indexes, conditions, and String methods.
Practice Available Practice ➔

Nested Iteration & Informal Run-Time Analysis

Topics 2.11–2.12 extend iteration to nested loops and introduce informal reasoning about how the amount of work performed by an algorithm changes as its input grows.

Topic 2.11
Nested Iteration
Trace inner and outer loops, calculate repeated execution, and analyze nested loop behavior and dependent loop bounds.
Practice Available Practice ➔
Topic 2.12
Informal Run-Time Analysis
Reason informally about how the amount of work performed by an algorithm changes as the size of its input changes.
AP CSA Unit 2 Coming Soon

Unit 2 Practice Assessment

Unit 2 Assessment
Unit 2 Practice Assessment: Iteration & Algorithms
Practice a mixed set of 15 Java MCQs covering Topics 2.7–2.11, including while loops, for loops, loop algorithms, String algorithms, and nested iteration. This is a focused assessment, not a comprehensive assessment of every Unit 2 topic.
Practice Available Start Assessment ➔

Frequently Asked Questions About AP CSA Unit 2

What is Unit 2 of AP Computer Science A?

Unit 2 is Selection and Iteration. It covers Boolean expressions, selection statements, loops, algorithms, nested iteration, and informal run-time analysis.

How much of the AP CSA exam does Unit 2 cover?

The current College Board course framework assigns Unit 2 an approximate AP Exam weighting of 25–35%.

How many topics are in AP CSA Unit 2?

The current College Board framework includes 12 topics, numbered 2.1 through 2.12.

Are all Unit 2 topics available for MCQ practice?

Not yet. This page shows the complete current Unit 2 topic structure. Topics marked Practice Available currently have relevant practice material, while topics marked Coming Soon will be added as new practice content is developed.

What should I practice first in Unit 2?

Start with Boolean expressions and then work through while loops, for loops, algorithms, String algorithms, and nested iteration. As additional selection topics are added, they can be practiced directly from this Unit 2 hub.

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