Objective-C Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Objective-C Interview Questions

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Explain what is protocol in objective-c?

What is toll-free bridging?

Explain what is @synthesize in objective-c?

Is objective c, a dynamic language? True/false, explain.

What is kvc and kvo? Give an example of using kvc to set value.

Does a thread created using performselectorinbackground:withobject: creates its own autorelease pool?

Can we create dynamic classes in objective c? If yes, explain how to create with a valid use case?

Who calls dealloc method?

What is responder chain?

What can’t we put into an array or dictionary?

Can I write some c++ function in same .m file?

Can we create dynamic classes in objective c?

What happen if we send any message to an object which is released?

Explain the difference between atomic and nonatomic synthesized properties.

How does dispatch_once manages to run only once?

Un-Answered Questions { Objective-C }

How do you insert a block?

What is a process and thread?

What do you mean by category and when to use it?

What is responder chain?

What is the major difference between objective c and swift?

Explain types of protocol?

What is objective c and swift?

What is lazy var?

Which language does apple use?

What is difference between objective c and swift?

How to declare variable in objective c?

Explain the types of protocol?

How do you add a category in objective c?

How big is a atom?

What is protocol in networking?

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