What is error in application in iphone?
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Explain what is a class?
What is concurrency in ios?
Screen resolution of iPhone & iPad
What are the different store migration options? How do they work?
What is arc ios?
When to use nsmutablearray and when to use nsarray?
How to start a thread?
You wish to define your custom view. Which class will be subclassed?
How are non-atomic and atomic properties different? Which one is the default property for synthesized properties? When would a user operate one over the other?
What is the 'interface' and 'implementation'?
Multitasking support is available from which version in iOS operating system?
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Do you know what are layer objects and what do they represent?