iOS Development UIKit Framework

Question 1

Which UIKit class is the base class for all visible UI elements?

Accepted Answer

UIView

Answer

UIControl

Answer

UIResponder

Answer

UIWindow

Question 2

What is the role of UIViewController in a UIKit app?

Accepted Answer

Manages a view hierarchy and coordinates with the app's data model

Answer

Renders graphics directly to the screen

Answer

Handles network requests

Answer

Stores persistent user preferences

Question 3

Which UIViewController lifecycle method is called after the view is loaded into memory?

Accepted Answer

viewDidLoad

Answer

viewWillAppear

Answer

viewDidAppear

Answer

loadView

Question 4

What does Auto Layout do in UIKit?

Accepted Answer

Defines the size and position of views using constraint relationships

Answer

Automatically generates view code from storyboards

Answer

Resizes images to fit their containers

Answer

Manages view controller transitions

Question 5

Which UIKit class is used to display a scrollable list of items?

Accepted Answer

UITableView

Answer

UICollectionView

Answer

UIScrollView

Answer

UIStackView

Question 6

What is the purpose of a UITableViewCell reuse identifier?

Accepted Answer

To efficiently recycle cells as they scroll off screen

Answer

To uniquely identify each row's data

Answer

To style cells with a specific color

Answer

To register the cell class with Interface Builder