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General MCQ for Objective C

1. What is KVO?

2. What does a CAEmitterCell do?

3. If a class conforms to a protocol what must it do?

4. What is a design pattern?

5. True or False? For an object to use constraints, it must have at least 3 constraint values.

6. What is the type of @selector(foo)?

7. What is @dynamic directive meaning in iOS?

8. What is one source of particles that are emitted by a CAEmitterLayer object?

9. What is the difference between #import and #include ?

10. What is (void*)0 ?

11. What are @try and @catch?

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