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What is the main concept of object-oriented programming?

Encapsulation

Inheritance

Polymorphism

Abstraction

Which language was the first to introduce object-oriented programming concepts?

Java

C++

Smalltalk

Python

What is a class in object-oriented programming?

A variable

A function

A blueprint for creating objects

An operator

What is inheritance in object-oriented programming?

The ability to create new classes from existing ones

The process of hiding implementation details

The ability to have multiple methods with the same name

The ability to access data outside of a class

What is polymorphism in object-oriented programming?

The ability to hide implementation details

The ability to have multiple methods with the same name

The ability to access data outside of a class

The ability to create new classes from existing ones

What is encapsulation in object-oriented programming?

The ability to have multiple methods with the same name

The ability to access data outside of a class

The process of hiding implementation details

The bundling of data and methods within a single unit

What is an object in object-oriented programming?

A variable

A function

An instance of a class

An operator

What is a constructor in object-oriented programming?

A method that creates a new object

A method that destroys an object

A method that modifies an object

A method that returns an object

What is a destructor in object-oriented programming?

A method that creates a new object

A method that destroys an object

A method that modifies an object

A method that returns an object

What is the difference between public and private access modifiers in object-oriented programming?

Public methods can be accessed from outside the class, while private methods cannot

Private methods can be accessed from outside the class, while public methods cannot

Both public and private methods can be accessed from outside the class

Neither public nor private methods can be accessed from outside the class

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