The correct answer is that Python supports multiple inheritance, virtual methods through method overriding, and operator overloading via special methods like __add__. This is true because Python’s class hierarchy allows a class to inherit from more than one parent class, a core OOP feature implemented using the C3 linearization algorithm (Method Resolution Order) to resolve method lookups unambiguously. Operator overloading is achieved by defining dunder methods such as __add__ for the + operator, while virtual methods are realized through method overriding in subclasses, enabling polymorphic behavior. On the PCAP exam, this topic tests your understanding of Python’s unique OOP model, often appearing in questions that distinguish between compile-time and runtime polymorphism or ask about MRO in diamond inheritance scenarios. A common trap is confusing method overloading (not natively supported) with overriding; remember that Python relies on duck typing and special methods for operator behavior. Memory tip: “MRO for multiple parents, dunders for operators, override for virtuals.”
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 THREE of the following are true about Python's object-oriented programming features?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Python supports multiple inheritance
Option B is correct because Python's class hierarchy supports multiple inheritance, allowing a class to inherit from more than one parent class. This is a core feature of Python's object-oriented programming model, implemented via the C3 linearization algorithm (Method Resolution Order, or MRO) to resolve method and attribute lookups unambiguously.
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.
✗
Python supports method overloading based on argument types
Why it's wrong here
Python does not support method overloading; you can use default arguments or *args.
✓
Python supports multiple inheritance
Why this is correct
Yes, a class can inherit from multiple base classes.
Related concept
Read the scenario before looking for a memorised answer.
✓
All methods are virtual in the sense that they can be overridden
Why this is correct
Due to dynamic dispatch, any method can be overridden in subclasses.
Related concept
Read the scenario before looking for a memorised answer.
✗
Python enforces access modifiers like private and protected
Why it's wrong here
Python uses name mangling for double underscores but does not enforce access restrictions.
✓
Operator overloading can be implemented by defining special methods like __add__
Why this is correct
Special methods enable operator overloading for user-defined classes.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Python Institute often tests the misconception that Python supports method overloading like Java or C++, leading candidates to incorrectly select Option A, when in fact Python uses dynamic typing and late binding to handle different argument patterns through default or variable arguments.
Detailed technical explanation
How to think about this question
Under the hood, Python's method resolution order (MRO) for multiple inheritance is computed using the C3 linearization algorithm, which ensures a consistent and predictable order of base class traversal. This is critical when a class inherits from multiple parents that share a common ancestor, as it prevents the 'diamond problem' by guaranteeing that each class is visited only once in a specific order. In real-world scenarios, multiple inheritance is often used in mixin classes to compose behavior from orthogonal sources, such as adding logging or serialization capabilities to a class without deep inheritance chains.
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.
TExam Day Tips
→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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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: Python supports multiple inheritance — Option B is correct because Python's class hierarchy supports multiple inheritance, allowing a class to inherit from more than one parent class. This is a core feature of Python's object-oriented programming model, implemented via the C3 linearization algorithm (Method Resolution Order, or MRO) to resolve method and attribute lookups unambiguously.
What should I do if I get this PCAP question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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