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,

842

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

TryTechnicals Pvt Ltd,

722

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

UGC Corporation,

780

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

UGC Corporation,

751

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

TryTechnicals Pvt Ltd,

867

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

TryTechnicals Pvt Ltd,

757

How can we achieve singleton pattern in iOS?

Winsol Solutions,

796

What is Delegation in iOS?

UGC Corporation,

764

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

TryTechnicals Pvt Ltd,

723

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

Winsol Solutions,

805

How to represent layer objects in iOS operating system ?

TryTechnicals Pvt Ltd,

770

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

TryTechnicals Pvt Ltd,

811

Is there any garbage collector concept available in iOS?

Winsol Solutions,

761

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

TryTechnicals Pvt Ltd,

760

What are layer objects in iOS operating system?

SwanSoft Technologies,

772

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Un-Answered Questions { Apple iOS }

what are the new features in Xcode 6?

895

Explain about Viewcontroller lifecycle.

815

How do you usually persist data on ios? : IOS Architect

730

Explain the difference between cocoa and cocoa touch?

824

Can I have relationship between entities in separate stores (in case of configurations)?

795

What is the difference between atomic and nonatomic properties?

810

What are the Common reasons for app rejection from app store review process?

799

How do you setup/initialise a core data stack in your application? Is this activity performed on main thread? If not, why?

730

What is ios viewdidload?

757

Which programming language is used in ios?

784

Can java run on ios?

722

What is id in ios?

777

What is meaning of 'atomic' keyword?

812

What is cocoa framework in ios?

816

Explain parent-child context setup?

725

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