What is polymorphism and abstraction?
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Explain the mechanism of composition?
What is a functional interface? What is sam interface?
Can we have default method with same name and signature in the derived interface as the static method in base interface and vice versa?
When do you prefer to use composition than aggregation?
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Define modularity?
How to differentiate between a CreateObject() and GetObject() ?
What is the use of interface?
Giving reasons explain two external responsibilities of a project manager.
Which OOPS concept is used as a reuse mechanism?
Describe inheritance and non-inheritance of a derived class?
How to use CRC Cards for Class Design?
What is an abstraction and why is it important?
Design Patterns 
