Xamarin Certification Xamarin.iOS Development 2

Question 1

Which Xamarin.iOS method is called when the app moves to the background?

Accepted Answer

DidEnterBackground

Answer

OnPause

Answer

WillResignActive

Answer

OnStop

Question 2

What is the role of UIViewController in Xamarin.iOS?

Accepted Answer

Manages a single screen's view and lifecycle

Answer

Handles HTTP requests

Answer

Provides data persistence

Answer

Manages app-level navigation

Question 3

In Xamarin.iOS, how do you navigate to a new view controller using a UINavigationController?

Accepted Answer

PushViewController

Answer

StartActivity

Answer

NavigateTo

Answer

ShowViewController

Question 4

Which API is used in Xamarin.iOS to request permission to send push notifications?

Accepted Answer

UNUserNotificationCenter.Current.RequestAuthorization

Answer

NotificationManager.RequestPermission

Answer

UIApplication.RegisterForRemoteNotifications

Answer

PushNotification.RequestAccess

Question 5

What does the Linker do in a Xamarin.iOS release build?

Accepted Answer

Removes unused code to reduce app size

Answer

Links native Objective-C libraries

Answer

Compiles IL to native code

Answer

Connects to the App Store

Question 6

In Xamarin.iOS, which compilation mode converts IL to native ARM code ahead of time?

Accepted Answer

AOT (Ahead-of-Time)

Answer

JIT (Just-in-Time)

Answer

Interpreter

Answer

LLVM Only