Mobile OS Interview Questions
Questions Answers Views Company eMail

Difference between iOS 3 , iOS4, iOS 5, iOS 6, iOS 7 and iOS 8 (What are the new features)

593

Explain about design patterns in iOS

1 785

Explain about MVC Design patters

1 693




what is singleton class? Why the whole application creates a single instance?

1 659

Explain @property ,@synthesize

1 644

what is the difference between nonatomic & atomic

1 867

What is bundle

1 740

Explain collections in iOS

1 671

Explain application states

363

Explain UIView life cycles

1 1057

Screen resolution of iPhone & iPad

1 735

Explain about NSURL Connection Delegates

1 892

Explain @synchronized ,@dynamic

710

what is the difference between nonatomic & atomic ? which is thread safe and why

504

Explain Apple push notification

438







Un-Answered Questions { Mobile OS }

The last callback in the lifecycle of an activity is onDestroy(). The system calls this method on your activity as the final signal that your activity instance is being completely removed from the system memory. Usually, the system will call onPause() and onStop() before calling onDestroy(). Describe a scenario, though, where onPause() and onStop() would not be invoked.

1221


If the Activity is showing an animation that indicates some kind of progress, what issue might you encounter and how could you address it?

607


Explain which all events will perform an ios application in background

605


Why is Ubuntu the most popular operating system for cloud? 

454


What’s Canonical’s role in OpenStack? 

439






What is a ContentProvider and what is it typically used for?

492


How you can use built-in Messaging within your application?

433


When dealing with property declarations, what is the difference between atomic and non-atomic?

521


what is preferences

578


What happens when you invoke a method on a nil pointer?

1273


In mapKit frame work, how to get current user location

504


How do I train as an Ubuntu system administrator?

420


What is the correct way to check if a Compass sensor is present on the system? Explain your answer.

807


How to fix tableviewcell dequeue issue ?

466


Difference b/w collectionView & uitableview?

809