Apple iOS Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Apple iOS Interview Questions

Questions Answers Views Company eMail

What is App Bundle in iOS operating system?

TryTechnicals Pvt Ltd,

841

What are all the difference between categories and subclasses in iOS operating system?

TryTechnicals Pvt Ltd,

721

What is an NSOperationQueue and how/would you use it in iOS operating system?

UGC Corporation,

779

What is plist file and explain about it is usage in iOS operating system?

UGC Corporation,

750

Multitasking support is available from which version in iOS operating system?

TryTechnicals Pvt Ltd,

866

Which app specific objects store the app's content in iOS operating system?

TryTechnicals Pvt Ltd,

756

How can we achieve singleton pattern in iOS?

Winsol Solutions,

796

What is Delegation in iOS?

UGC Corporation,

763

Why do we need to use @Synthesize in iOS operating system?

TryTechnicals Pvt Ltd,

722

Is the delegate for a CAAnimation retained in iOS operating system?

Winsol Solutions,

804

How to represent layer objects in iOS operating system ?

TryTechnicals Pvt Ltd,

769

What is the difference between copies & retain in iOS operating system?

TryTechnicals Pvt Ltd,

810

Is there any garbage collector concept available in iOS?

Winsol Solutions,

759

How can an operating system improve battery life while running an app in iOS operating system?

TryTechnicals Pvt Ltd,

756

What are layer objects in iOS operating system?

SwanSoft Technologies,

771

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Un-Answered Questions { Apple iOS }

What is a category and when is it used?

841

What are the sorts of ios binaries you can make utilizing xcode?

783

What do you mean by rest?

751

What is weak in ios?

785

Does ios have garbage collection?

728

What is arc and how is it different from autorelease?

772

Explain difference between release and autorelease?

780

Is ios multithreading?

771

What are various singleton instances provided by frameworks?

754

What compilers apple using ?

835

How can a user respond or react to the state transitions on the app?

859

Differentiate 'app id' from 'bundle id'.

772

In which language is ios written?

772

What is the difference between inheritance and category?

792

What is context in core data ios?

756

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