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

883

What is a category and when is it used?

898

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?

780

What are the limits of accessibility ?

854

Explain the characteristics of ios?

816

Explain place holder constraint

788

Explain differences between foundation and corefoundation

846

What is auto-layout?

917

What is the difference between let and var in swift?

920

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?

767

Explain the difference between copy and retain?

944

What is the difference between synchronous & asynchronous task ?

918

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

879

what’s accessibilityhint?

857

What is made up of nserror object?

854

Un-Answered Questions { Mobile OS }

The best time to kill a foreground activity in Android?

1247

What is the purpose of using ibaction and iboutlet?

783

Describe the capabilities of ddms?

967

Is apple using swift?

747

What is activity lifecycle?

923

Explain seapine software?

1010

How can you make a property optional in swift?

818

What is dynamic keyword in swift?

815

Why ios is faster than android?

952

Is ubuntu 18.04 a lts?

661

What type of literals does swift language have?

802

Which activity class do you need to inherit to show google map?

979

Explain gen folder in android?

915

What are type methods in swift?

775

Explain the difference between nil and nil?

895

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