iOS Development IOS App Development Fundamentals 2

Question 1

Which framework introduced in 2019 uses a declarative syntax for building iOS user interfaces?

Accepted Answer

SwiftUI

Answer

UIKit

Answer

AppKit

Answer

Core Graphics

Question 2

In Swift, which keyword declares a variable whose value cannot change after assignment?

Accepted Answer

let

Answer

var

Answer

const

Answer

final

Question 3

What is the primary purpose of the AppDelegate in a UIKit-based iOS app?

Accepted Answer

Handling app-level lifecycle events

Answer

Rendering all views

Answer

Storing user data

Answer

Managing Auto Layout constraints

Question 4

Which file format is used to manage app configuration and metadata such as bundle identifier and permissions?

Accepted Answer

Info.plist

Answer

Podfile

Answer

Package.swift

Answer

Main.storyboard

Question 5

What does Auto Layout primarily enable in an iOS app?

Accepted Answer

Adaptive UI across different screen sizes

Answer

Automatic code generation

Answer

Faster network requests

Answer

Background data syncing

Question 6

Which Swift feature safely handles the absence of a value?

Accepted Answer

Optionals

Answer

Tuples

Answer

Enums

Answer

Closures

Question 7

What is the entry point attribute for a SwiftUI app's main structure?

Accepted Answer

@main

Answer

@StateObject

Answer

@Published

Answer

@Environment