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 a memory leak?

894

Why don’t we use strong for enum property in objective-c ?

1117

What is gcd? How is it used?

816

Why do we use synchronized ?

858

What widgets can not do ?

936

What is synchronous vs. Asynchronous in gcd ?

826

What is the ? In swift?

912

What is @synthesize in objective-c ?

875

What’s the difference between an “app id” and a “bundle id” and what is each used for?

944

What is a category and when is it used?

958

What are “strong” and “weak” references? Why are they important and how can they be used to help control memory management and avoid memory leaks?

815

What are the limits of accessibility ?

910

Explain the characteristics of ios?

876

Explain place holder constraint

840

Explain differences between foundation and corefoundation

883

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Un-Answered Questions { Apple iOS }

What is category and class extension?

901

What are the different store migration options? When are they used?

855

Explain the difference between NSOperationQueue concurrent and non-concurrent in iOS operating system?

894

Explain the difference between copy and retain?

980

What is nspersistentstorecoordinator?

850

How to find the memory leaks in mrc?

1332

How is it possible to improve battery life during execution of an application?

837

What is ios application life cycle?

846

What is categories in iOS?

917

What is thread in ios?

840

What is managed object context?

908

How to change the content of your app in order to change the views displayed in the corresponding window?

815

What is oops in ios?

858

Explain about Viewcontroller lifecycle.

919

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

847

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