The part of an Objective-C class specification that declares its public interface which includes its superclass name & instances variables and public-method prototypes is called:

The property attribute that causes the setter to store a strong reference to the assigned value is called:

Proper answer about the difference between nil and NULL?

Where is a MKAnnotationView used?

Difference between #import and #include?

What is category in Objective-C?

Which of the following is the fastest?

What is true regarding C functions inside .m files?

If you need to allocate custom memory, in which method will you do so?

What is the Obj-C runtime?

What happens if two categories define methods with the same names for the same class?