What is called by  a class serving only as a base class for other classes and no objects of which are created? 

What is the relationship of two classes such that the objects of a class enclosed within the other class?

Which of the following is the combination of two or more forms of inheritance?

Which of the following means the methods of a class?

What is the  most important advantage of inheritance?

Consider the following code:
Class A
{
char g;
protected:
int x, y;
public:
int z;
};
class B: public A
{
int a, b, c;
};
From the above inheritance hierarchy, how many data members does class B have?

New class or classes can derive  from an existing class. The existing class is called _________

Which of the following is not an OOP characteristic?

What is the advantage of reusability?

How can we define the relationship between base and derived classes?