Quiz

Question 13–1

What is the difference between an interface and a class that implements an interface?

Question 13–2

What is the difference between an interface and an abstract base class?

Question 13–3

How do you indicate that class MyClass derives from class MyBase and implements the interfaces ISuppose and IDo?

Question 13–4

What two operators can tell you if an object’s class implements an interface?

Question 13–5

What is the difference between the is and as operators?

Question 13–6

What does it mean to “extend” an interface?

Question 13–7

What is the syntax for extending an interface?

Question 13–8

What does it mean to override an interface implementation?

Question 13–9

What is explicit interface implementation and why would you use it?

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