What is a fault?
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What is a background thread?
Mention what is the use of po command in xcode?
What is @implementation?
Explain the usage of struct?
Define 'retain' keyword?
Can apk files run on ios?
Is realm db free?
What is synchronous vs. Asynchronous in gcd ?
What’s the difference between not-running, inactive, active, background and suspended execution states?
How does the runtime handle message passing? What is message forwarding?
What are different instruments xcode supports for app profiling?
What are all the newly added frameworks iOS 4.3 to iOS 5.0?