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Objective C MCQs

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

Implement all methods in the protocol without exception

Implement all methods in the protocol, except for optional ones

Implement all methods which do not have a default implementation in the protocol

Implement all or some methods and leave the rest to be implemented by subclasses

Answer

Correct Answer: Implement all methods in the protocol, except for optional ones

Explanation:

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