Object Oriented Interview Questions

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1

If a base class has a bunch of overloaded constructors, and an inherited class has another bunch of overloaded constructors, can you enforce a call from an inherited constructor to an arbitrary base constructor?

How can you overload a method?

What’s the difference between an interface and abstract class?

Can you inherit multiple interfaces?

Why can’t you specify the accessibility modifier for methods inside the interface?

What’s an interface class?

When do you absolutely have to declare a class as abstract (as opposed to free-willed educated choice or decision based on UML diagram)?

What’s an abstract class?

Can you allow class to be inherited, but prevent the method from being over-ridden?

Can you prevent your class from being inherited and becoming a base class for some other classes?

Can you override private virtual methods?

Can you declare the override method static while the original method is non-static?

What does the keyword virtual mean in the method definition?

How’s method overriding different from overloading?

What’s the top .NET class that everything is derived from?

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