CPP Object-Oriented Programming & Class Design

Question 1

What is encapsulation in C++?

Accepted Answer

Bundling data and related functions together

Answer

Separating data and functions.

Answer

Allowing unrestricted access to data.

Answer

Making all members public.

Question 2

What is the role of a constructor in a class?

Accepted Answer

Initializes an object upon creation

Answer

Deletes object memory.

Answer

Prints object data.

Answer

None of the above.

Question 3

What is inheritance in OOP?

Accepted Answer

Acquiring features from a base class

Answer

Sharing private members.

Answer

Copying all functions manually.

Answer

None of the above.

Question 4

What is polymorphism in C++?

Accepted Answer

Multiple meanings for the same interface

Answer

One function for all tasks.

Answer

Changing data type of variables.

Answer

None of the above.

Question 5

Which keyword is used to inherit a class?

Accepted Answer

:

Answer

extend

Answer

implements

Answer

inherits

Question 6

Which of the following is an access specifier in C++?

Accepted Answer

private

Answer

class

Answer

object

Answer

method

Question 7

Which method is called automatically when an object is destroyed?

Accepted Answer

Destructor

Answer

Constructor

Answer

Cleaner

Answer

Clearer

Question 8

How is a class object created in C++?

Accepted Answer

ClassName obj;

Answer

create ClassName;

Answer

new objectClass();

Answer

make ClassName obj;

Question 9

Which feature allows a derived class to redefine a base class function?

Accepted Answer

Overriding

Answer

Overloading

Answer

Hiding

Answer

Extending