CPP Object-Oriented Programming Concepts 2

Question 1

What is a constructor in OOP?

Accepted Answer

A special method called automatically when an object is created

Answer

A method that destroys an object

Answer

A static factory method

Answer

A method that copies an object

Question 2

Which design concept is described as 'favoring composition over inheritance'?

Accepted Answer

Building complex behavior by combining simpler objects rather than extending class hierarchies

Answer

Using abstract classes exclusively

Answer

Inheriting from multiple base classes

Answer

Using only static methods

Question 3

What is a 'static' method in OOP?

Accepted Answer

A method belonging to the class rather than any instance

Answer

A method that cannot be overridden

Answer

A method with no parameters

Answer

A method that always returns void

Question 4

What is the role of the 'this' keyword in OOP languages?

Accepted Answer

Refers to the current object instance

Answer

Refers to the parent class

Answer

Creates a new object

Answer

Refers to a static context

Question 5

What is the purpose of a destructor or finalizer in OOP?

Accepted Answer

To perform cleanup operations before an object is garbage collected or destroyed

Answer

To initialize object state

Answer

To copy an object

Answer

To override inherited methods

Question 6

In OOP, what does 'coupling' refer to?

Accepted Answer

The degree of interdependence between software modules

Answer

The number of methods in a class

Answer

The ability to hide implementation details

Answer

The process of inheriting from a parent class