Most asked top Interview Questions and Answers & Online Test
Education platform for interview prep, online tests, tutorials, and live practice

Build skills with focused learning paths, mock tests, and interview-ready content.

WithoutBook brings subject-wise interview questions, online practice tests, tutorials, and comparison guides into one responsive learning workspace.

Search the library
Prepare Interview

iOS Interview Questions and Answers

Related differences

Android vs iOS

Ques 46. What are the essential certificates for issuing and developing apps, either Android or iOS?

The certificate types are:

  1. Development Certificate
  2. Distribution Certificate 
  3. Development and Distributing Certificates 

Is it helpful? Add Comment View Comments
 

Ques 47. What is ‘assign’ in iOS?

In iOS, ‘assign’ is used to create an orientation from one object to the other without raising the retain count of the source object.

Is it helpful? Add Comment View Comments
 

Ques 48. Why is 'reuseIdentifier' used in iOS?

The ‘reuseIdentifier’ is used to group all the similar rows from UITableView.

Is it helpful? Add Comment View Comments
 

Ques 49. How can you reduce the size of the App?

The three different methods to reduce app size are:

  1. Bit code
  2. On-demand Resource
  3. App Slicing 

Is it helpful? Add Comment View Comments
 

Ques 50. What is MVC? Tell about its implementation in iOS.

MVC (Model View Controller) is a design pattern that defines how logic will be separated when the user interface is implemented. In iOS, UIView is the base class provided by Apple for all views, and UIViewController is provided to support the Controller, which listens to events in a View and updates it when data changes.

Is it helpful? Add Comment View Comments
 

Most helpful rated by users:

Copyright © 2026, WithoutBook.