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,

951

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

TryTechnicals Pvt Ltd,

811

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

UGC Corporation,

881

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

UGC Corporation,

844

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

TryTechnicals Pvt Ltd,

957

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

TryTechnicals Pvt Ltd,

846

How can we achieve singleton pattern in iOS?

Winsol Solutions,

897

What is Delegation in iOS?

UGC Corporation,

847

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

TryTechnicals Pvt Ltd,

829

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

Winsol Solutions,

905

How to represent layer objects in iOS operating system ?

TryTechnicals Pvt Ltd,

857

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

TryTechnicals Pvt Ltd,

912

Is there any garbage collector concept available in iOS?

Winsol Solutions,

855

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

TryTechnicals Pvt Ltd,

850

What are layer objects in iOS operating system?

SwanSoft Technologies,

880

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Un-Answered Questions { Apple iOS }

What is nspersistentstore?

977

How to handle concurrency problems in core data?

968

What is ios image?

793

Mention the short-cut to edit variables in Scope?

844

Do you know what is iphone reference library?

927

Garbage collector in iphone?

937

Explain the options and bars available in xcode 4.x workspace window in iOS operating system

861

How to implement "load more" using nsfetchedresultscontroller?

865

Explain keywords alloc and new?

861

What is ios viewwillappear?

860

Explain the different types of ios application states.

859

what are the new features in Xcode 6?

1005

Who calls the main function of app during the app launch cycle in ios?

892

Explain stack and heap?

908

What is difference between static library and framework?

960

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