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Xamarin MVVM Online Test

Topics Covered

  • StringFormat attribute
  • Xamarin Forms
  • DataContext
  • ViewModel
  • MVVM Frameworks
  • ValueConverter in XAML

Useful for hiring

  • Xamarin Developer - MVVM

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Question

You have a requirement to format Decimal values using the Currency string format in Labels, which of the following are the correct ways to do this?

Note: There can be multiple correct answers to this question.

Answer
    • Set the StringFormat in the Style of all controls that need this behavior

    • Use a ValueConverter to format the output and use it in the binding declaration of the Content property

    • User a the StringFormat parameter to format the output in the binding declaration of the Content property

    • None of the mentioned

Question

Which of the following can you use to simplify the INotifyPropertyChanged implementation and usage?

Note: There can be multiple correct answers to this question.

Answer
    • Use [CallerMemberName] in the parameter declaration of the method that calls the PropertChangedEvent so that you don't need to explicitly declare the name of the property.

    • Use a base class that already has the INotifyPropertyChanged interface implementation.

    • Use assembly weavers like Fody and PostSharp that can handle this implementation at build time for you.

    • None of the mentioned

Question

You want to create a Command that is binded to a Button. This button can only be enabled if the thebooleanCanContinue property you have in your ViewModel is true. Which is the best alternative on how can you do this using MVVM?

Answer
    • Create an "if" statement in the Execute command method that returns if the CanContinue value is false

    • Use an EventHandler for the Click event and in this handler create an "if" statement in the that returns if the CanContinue value is false

    • return the CanContinue value in the CanExecute method of the command you created

    • Bind the CanContinue value to the IsEnabled property of the button

Test details:

The online Xamarin MVVM test enables employers and recruiters to identify potential prospects by evaluating working skills and job readiness. For this reason, the emphasis is laid upon evaluating the knowledge of applied skills gained through real work experience, rather than theoretical knowledge.

The Xamarin MVVM test may contain MCQ's (Multiple Choice Questions), MAQ's (Multiple Answer Questions), Fill in the Blank, Descriptive, Whiteboard Questions, Audio / Video Questions, True or False.
 
Test Duration: 20 minutes

10 Application Questions

Our test contains a combination of application and theory questions that help you to evaluate the application as well as practical skills of candidates.

Test description:

Xamarin is a platform which consists of a number of elements that allow you to develop applications for iOS and Android. One important benefit of using Xamarin is to build cross-platform applications so that they can take advantage of native UI toolkits to present a familiar interface to the user. The Model-View-ViewModel (MVVM) is a software architectural pattern that helps to cleanly separate the business and presentation logic of an application from its user interface (UI). This kind of software architecture pattern enables designers and developers to work collaboratively on any type of project. The main key to using MVVM effectively lies in understanding how to factor the app code into the correct classes, and in understanding how the classes interact.

Our Xamarin MVVM online test is created & validated by experienced subject matter experts (SMEs) to assess Xamarin MVVM skills of candidates as per industry standards. Xamarin MVVM assessment test helps recruiters and hiring managers to evaluate the expertise of candidates in the field of Xamarin and MVVM.

The Xamarin MVVM test helps to screen the candidates who possess traits: 

  • Knowledge of Visual Studio and Xamarin Studio  

  • Knowledge of Xamarin.iOS, Xamarin.Android, and Xamarin.Mac

  • Experience in Android, iOS, and Windows app

  • Knowledge of HTML, XAML and web-based technologies


Our Xamarin MVVM skills test will make sure to assess all the required skills such as HTML, XAML, UI controls, and web services. The MVVM Xamarin test will further ensure that the hiring manager gets the right fit candidate for the Xamarin job role. Our score reports will give a detailed analysis of each candidate and will provide the analytical data which saves the time of the recruiter.

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  • Customize test settings like duration, number of questions, passing score, web proctoring and much more

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