Define 'strong' keyword?
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How do I get a call when my ipad rings?
Define view object.
From which ios version, arc is supported?
Which is the application thread from where uikit classes should be used?
Explain how an autorelease pool works at the runtime level
What is nsuserdefaults? What type of data can we store there?
What is background state in ios?
What are selectors in objective-c?
Explain place holder constraint
Who calls the main function of you app during the app launch cycle in iOS operating system?
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What is made up of nserror object?
What is arc xcode?