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iOS Objective C Interview Questions

If you are looking for ios objective-C interview questions, here is the list of most important questions that can be asked in interviews. Make yourself ready with this comprehensive list of interview questions.

iOS-Objective-C-Interview-Questions1

iOS Objective C Interview Questions:

 

  1. What is the difference between boxName and self.boxName?
  2. How autorelease pool is managed?
  3. Why is category better than inheritance?
  4. What is the split view controller?
  5. The advantages and disadvantages about synchronous versus asynchronous connections.
  6. Three occasions when you might use your own autorelease pools.
  7. Can we use one tableview with two different datasources? How will you achieve this?
  8. Difference between categories and extensions.
  9. Difference between shallow copy and deep copy.
  10. How to access the encapsulated data in objective-c?
  11. Tell four frameworks used in iphone.
  12. What are layer objects and what do they represent?
  13. How do you change the content of your app in order to change the views displayed in the corresponding window?
  14. Which object manage the presentation of app’s content on the screen?
  15. Are document objects required for an application? What do they offer?
  16. How is the app delegate is declared by Xcode project templates?
  17. Assume that system is running low on memory. What can system do for suspended apps?
  18. An app is loaded into memory but is not executing any code. In which state will it be in?
  19. Give example scenarios when an application goes into InActive state.
  20. Which framework delivers event to custom object when app is in foreground?
  21. What is atomic and nonatomic? Which one is safer? Which one is default?
  22. What are all the difference between categories and subclasses? Why should we go to subclasses?
  23. What happens when the following code executes?
    Ball *ball = [[[[Ball alloc] init] autorelease] autorelease];
  24. Can you explain what happens when you call autorelease on an object?

Use this list of ios objective-C Interview Questions for interview preparation. Read them, bookmark them, and even add your own interview questions in the comments below.

Pankaj Deshmukh

Pankaj Deshmukh is in the field of digital marketing. He works with Interview Mocha and produces content for the variety of blogs that cover topics from recruitment, social media hiring & candidate assessment. He believes that learning is never ending process and stays updated with the latest trends that are useful for producing valuable content.

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