What are layer objects and what do they represent in iOS operating system?


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More Apple iOS Interview Questions

What is iOS?  

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How to add an iphone os user to your team as a tester?

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Is core data is thread safe?

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What is difference between delegate and datasource in ios?

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What is delegate method?

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Who calls the dealloc strategy?

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How to do upload of large sized video file to server ? while uploading user presses “Homebutton” How long will execute?

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What is memory management handled on ios?

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Multitasking support is available from which version in iOS operating system?

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Did you used CLRegion? How its working?

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How you will store user info (username, password or token) securely in ios?

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What are the skills required for ios developer?

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