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Question 131
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What is the difference between an interface and a class that implements an interface?
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Question 132
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What is the difference between an interface and an abstract base class?
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Question 133
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How do you indicate that class MyClass derives from class MyBase and implements the interfaces ISuppose and IDo ?
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Question 134
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What two operators can tell you if an object's class implements an interface?
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Question 135
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What is the difference between the is and as operators?
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Question 136
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What does it mean to "extend" an interface?
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Question 137
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What is the syntax for extending an interface?
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Question 138
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What does it mean to override an interface implementation?
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Question 139
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What is explicit interface implementation and why would you use it?