Explain stack and heap?
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Explain UIApplication delegate
What is an NSOperationQueue and how/would you use it in iOS operating system?
What language is ios based on?
What is delegate in ios objective c?
What are lifecycle events of uiviewcontroller?
An app is loaded into memory but is not executing any code. In which state will it be in?
What is Delegation in iOS?
What is ios closure?
Flow of push notification?
What is background state in ios?
Explain the difference between bounds and frame?
Explain retain counts in iOS operating system?