Does ios supports multi-tasking functionality?
Give example scenarios when an application goes into inactive state?
Assume that an app is not in foreground but is still executing code. In which state will it be in?
What is nspersistentstorecoordinator?
What is a retain cycle?
When a nsfetchrequest fetches an entity object from store, does it fetch all of its data at once?
Explain parent-child context setup. What are the advantages?
Explain how to shut off message alerts in ios?
How will you implement sets and the intersection operation? Complexity?
What is background mode in ios?
What is @dynamic in objective-c ?
Garbage collector in iphone?
What is block in ios swift?