Question 38 of 481
1Z0-811 Object-Oriented Programming Practice Question
Which THREE are fundamental principles of Object-Oriented Programming? (Choose three.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Encapsulation
Options B, D, and E are correct. Encapsulation, inheritance, and polymorphism are the three fundamental principles of Object-Oriented Programming. Option A (Compilation) is incorrect because compilation is a language process, not an OOP principle. Option C (Modularization) is incorrect because modularization is a design concept, not a foundational OOP principle.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Compilation
Why it's wrong here
Compilation is a language implementation step, not an OOP principle.
- ✓
Encapsulation
Why this is correct
Encapsulation bundles data and methods, and hides internal state.
- ✗
Modularization
Why it's wrong here
Modularization is a design technique, not a fundamental OOP principle.
- ✓
Inheritance
Why this is correct
Inheritance allows a class to reuse code from a parent class.
- ✓
Polymorphism
Why this is correct
Polymorphism enables one interface to have multiple implementations.
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Same concept, more angles
1 more way this is tested on 1Z0-811
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which two of the following are fundamental principles of Object-Oriented Programming? (Choose two.)
easy- A.Iteration
- B.Compilation
- C.Synchronization
- ✓ D.Encapsulation
- ✓ E.Polymorphism
Why D: The four main OOP principles are encapsulation, inheritance, polymorphism, and abstraction.
Last reviewed: Jun 23, 2026
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