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Answer Posted / Rajeev Srivastava
In Objective-C, a protocol is a collection of methods that should be implemented by any class or category that conforms to the protocol. Protocols allow for objects of different classes to work together because they agree to implement the same set of methods. Protocols are defined using the 'protocol' keyword and methods are enclosed in curly braces '{' and '}'. A protocol can also declare properties with the '@property' directive.
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