Explain how the push notification works in iOS operating system?


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More Apple iOS Interview Questions

Explain difference between coredata & sqlite?

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What does exc_bad_access mean?

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What is delegate in ios objective c?

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What is object graph in ios?

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. Name the app sate which it reaches briefly on its way to being suspended

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Assume that an app is not in foreground but is still executing code. In which state will it be in?

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Which class will be subclassed in iOS operating system?

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What is messaging? How does the runtime handle message passing? What is message forwarding?

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Define view object in iOS operating system?

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What is ios image?

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What is nsfetchedresultscontroller? How do you turn on content monitoring?

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What is synchronous vs. Asynchronous in gcd ?

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