Explain formal protocols?
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How core data works to save data in persistent storage?
What is cococa and cocoa touch?
What do you know about the ios kernel?
Please explain what is difference strong and weak reference?
What is a memory leak ios?
what are fetched properties?
What is block in ios?
What is nsfetchedresultscontroller? How do you turn on content monitoring?
What is retain counts?
Difference between categories and extensions?
Explain How to access document directory
How to parse json?