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

Objective-C Interview Questions

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Can a static library (.a) contain resources like images, sound files etc?

What is the difference between underscore and self (i.e self.xx and _xx) ?

When might you use a cfarray/dictionary instead of a nsarray/dictionary?

What is a process and thread?

What are blocks and how are they used?

Can I write some c++ function in same .m file? Will it compile? If no, what changes should I do to compile it?

What are the adavantages of gcd over nsthread?

What is class extension? Why do we require them?

When to use nsautoreleasepool??

Un-Answered Questions { Objective-C }

Why swift is faster then objective c?

What is difference between extern and global?

What is property in objective c?

What is difference between array and nsarray?

What is the isa member?

What is nonatomic and strong in objective c?

What is objective c written in?

Is objective c deprecated?

What does the objective c program fundamentally comprise of?

What is delegation protocol?

What is delegate? Can delegates be retained?

Why swift is faster than objective c?

What is instance variable objective c?

Explain the difference between uiwindow and uiview?

What is the difference between objective c and c++?

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