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Mobile OS Interview Questions
Questions Answers Views Company eMail

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

 1 994

What is a category and when is it used?

 1 997

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?

 1 857

What are the limits of accessibility ?

 1 947

Explain the characteristics of ios?

 1 923

Explain place holder constraint

 1 878

Explain differences between foundation and corefoundation

 1 921

What is auto-layout?

 1 988

What is the difference between let and var in swift?

 1 1015

What is the difference between atomic and non-atomic properties? Which is the default for synthesized properties? When would you use one over the other?

 1 859

Explain the difference between copy and retain?

 1 1025

What is the difference between synchronous & asynchronous task ?

 1 1016

Why do you generally create a weak reference when using self in a block?

 1 973

what’s accessibilityhint?

 1 957

What is made up of nserror object?

 1 941

Un-Answered Questions { Mobile OS }

How can you define a base class in swift?

933

Explain parent-child context setup. How does it work? What are the advantages?

870

What are the different store migration options? How do they work?

877

What is the latest version of edubuntu and when was it released?

828

What's the latest version of ios?

976

Why do all model object attributes get marked with @dynamic and not synthesised?

975

Which is the latest version of android os?

1050

Why do all model object attributes get marked with @dynamic and not synthesised? What does @dynamic mean?

850

Explain how to play video in isolatedstorage using mediaelement?

934

In a single model, can I have few entities in one sqlite db file and remaining in another sqlite db file?

990

How to handle concurrency problems in core data?

1012

What is the latest version of edubuntu?

894

Explain how to save screen from an xna app?

1037

Which is the latest version of android?

1089

What is latest ios version?

1000

For More Un-Answered { Mobile OS } Questions Click Here