What are virtual functions, base class pointer, derived class pointer, biding references?
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What are the interfaces you used in beans?
Explian following terms: Constraint Rules, Design by contract.
What is the default access modifier for a class,struct and an interface declared directly with a namespace?
Difference between abstraction and implementation hiding ?
What is the difference between aggregation and composition?
A class inherits from 2 interfaces and both the interfaces have the same method name as shown below. How should the class implement the drive method for both car and bus interface?
Describe the Diamond problem. Where does this problem occur?
What is a functional interface? What is sam interface?
Differences between functional programming and object-oriented programming?
What do you mean by Realization?
What is the super keyword?
What is an abstraction?
Design Patterns 
