OOP Concepts Quiz

A hospital system has classes Doctor, Nurse, and Staff. They all inherit from the class Employee. What OOP concept is applied?

• Encapsulation

• Abstraction

• Polymorphism

• Inheritance

A method named PaySalary() responds differently depending on whether an object is of type FullTimeEmployee or PartTimeEmployee. This is an example of:

• Abstraction

• Inheritance

• Polymorphism

• Encapsulation

A programmer makes fields private and uses get and set methods. Which OOP pillar is shown?

• Inheritance

• Encapsulation

• Polymorphism

• Abstraction

The process of hiding complex systems and showing only essential features is called:

• Abstraction

• Encapsulation

• Polymorphism

• Overriding

In C#, class Car : Vehicle means:

• Encapsulation

• Inheritance

• Polymorphism

• Abstraction

The ability for the same method Draw() to behave differently in Circle, Rectangle, and Triangle subclasses demonstrates:

• Encapsulation

• Inheritance

• Abstraction

• Polymorphism

An ATM machine only showing user functions like Withdraw and Deposit is…

• Encapsulation

• Inheritance

• Polymorphism

• Abstraction

The process of wrapping data and code into a single unit:

• Inheritance

• Encapsulation

• Abstraction

• Polymorphism

public class Tiger : Animal { } indicates:

• Polymorphism

• Abstraction

• Inheritance

• Encapsulation

Different classes (Dog, Cat, Bird) inherit a method Speak() and implement it in their own way. This is:

• Overloading

• Abstraction

• Encapsulation

• Polymorphism