Mobile OS Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Mobile OS Interview Questions

Questions Answers Views Company eMail

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

UGC Corporation,

833

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

UGC Corporation,

797

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

TryTechnicals Pvt Ltd,

921

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

TryTechnicals Pvt Ltd,

802

How can we achieve singleton pattern in iOS?

Winsol Solutions,

849

What is Delegation in iOS?

UGC Corporation,

807

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

TryTechnicals Pvt Ltd,

782

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

Winsol Solutions,

855

How to represent layer objects in iOS operating system ?

TryTechnicals Pvt Ltd,

806

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

TryTechnicals Pvt Ltd,

860

Is there any garbage collector concept available in iOS?

Winsol Solutions,

816

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

TryTechnicals Pvt Ltd,

814

What are layer objects in iOS operating system?

SwanSoft Technologies,

832

What is notification in iOS?

TryTechnicals Pvt Ltd,

871

Explain how an autorelease pool works at the runtime level in iOS

SwanSoft Technologies,

950

Un-Answered Questions { Mobile OS }

Can android run javafx?

980

What are advantages of arc over mrc?

844

What is animation-list?

1009

In swift what is use of backticks while declaring a variable?

888

What is swift and what is objective-c?

810

What is meaning of 'copy' keyword?

831

How long is ubuntu 18.04 supported?

732

What is anim/ directory?

936

What do you know about intents?

925

What is android 6 called?

958

What is the difference between viewdidload and viewdidappear?

817

What is ischecked() method?

932

what are the source items used by Xcode?

1088

What is res folder in android?

981

how to install your app in android?

905

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