PCAP Object-Oriented Programming Practice Question
This PCAP practice question tests your understanding of object-oriented programming. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO of the following statements about class attributes in Python are true?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Class attributes are shared by all instances.
Class attributes are accessible via the class name and are shared across all instances. Options C, D, and E are false because class attributes can be mutable (e.g., lists), modifying via an instance creates an instance attribute if assigned, and they are defined directly in the class body, not inside methods.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Class attributes are always immutable.
Why it's wrong here
False – they can be mutable types like lists or dictionaries.
✓
Class attributes are shared by all instances.
Why this is correct
True – all instances see the same class attribute unless shadowed by an instance attribute.
Related concept
Read the scenario before looking for a memorised answer.
✗
Class attributes are defined inside methods.
Why it's wrong here
False – they are defined directly in the class body, not inside methods.
✗
Modifying a class attribute via an instance modifies it for all instances.
Why it's wrong here
False – assigning to an attribute on an instance creates an instance attribute, leaving the class attribute unchanged.
✓
Class attributes can be accessed via the class name.
Why this is correct
True – they are stored on the class and can be accessed as ClassName.attribute.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
Identify which PCAP exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Object-Oriented Programming — This question tests Object-Oriented Programming — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Class attributes are shared by all instances. — Class attributes are accessible via the class name and are shared across all instances. Options C, D, and E are false because class attributes can be mutable (e.g., lists), modifying via an instance creates an instance attribute if assigned, and they are defined directly in the class body, not inside methods.
What should I do if I get this PCAP question wrong?
Identify which PCAP exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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