What persistent storage core data uses to save data?
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Explain parent-child context setup. What are the advantages?
What is delegate method?
What is grand central dispatch ios?
What are the ios devices?
What is messaging? What is message forwarding?
How many bytes we can send to apple push notification server?
What is dynamic typing in iOS operating system?
What is the benefit of setting reuseidentifier to a non-nil value?
When would you say that an app is not in a running state?
What is suspended state in ios?
How to download images in ios?
Is ios 9 still supported by apple?