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Ucertify offers free demo for 70-355 exam. “Universal Windows Platform – App Data, Services, and Coding Patterns”, also known as 70-355 exam, is a Microsoft Certification. This set of posts, Passing the Microsoft 70-355 exam, will help you answer those questions. The 70-355 Questions & Answers covers all the knowledge points of the real exam. 100% real Microsoft 70-355 exams and revised by experts!

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Q1. You are developing a Universal Windows Platform (UWP) app by using Microsoft Visual Studio 2015.

You plan to perform unit testing.

You need to automate the creation of the unit tests. What should you use?

A. IntelliTest

B. Application Insights

C. Code Coverage

D. Test Explorer

Correct 

Answer:

Explanation:

IntelliTest explores your .NET code to generate test data and a suite of unit tests. For every statement in the code, a test input is generated that will execute that statement.

Q2. Your company uses Microsoft Visual Studio Team Services.

You are testing a Universal Windows Platform (UWP) app.

You need to record the actions performed in the app and record user comments. The test must not use a predefined set of steps. What should you do?

A. From Visual Studio Team Services, create a new test plan.

B. From Visual Studio Team Services, create a new test case.

C. From Microsoft Test Manager, perform exploratory testing.

D. From Microsoft Test Manager, create a new test.

Answer: C

Explanation:

Exploratory testing means testing an application without a set of tests defined in advance, and without a script of predetermined steps.

Microsoft Test Manager (MTM) helps you by recording the actions you perform as you work with your application. You can also record screenshots, comments, file attachments, audio narration and screen video.

Q3. You are developing a Universal Windows Platform (UWP) app that will support two displays. The primary display will have a maximum resolution of 1080 p. The secondary display will support a maximum resolution of 4 К and will not support interactivity.

Your need to ensure that the app can use the full resolution of each display.

What is the best approach to achieve the goal? More than one answer choice may achieve the goal. Select the BEST answer.

A. Set the AutoSizeMode property for the app.

B. Enable multiple display support by using the ApplicationView API.

C. Enable multiple display support by using the ProjectionManager API.

D. Set the AutoScaleMode property for the app.

Correct 

Answer:

Explanation:

Projection manager lets you project a separate window of your app on another screen.

When the second window is for display only, not for interaction then it is recommended that you use the projection manager.

References:

https://msdn.microsoft.com/en-us/library/windows/apps/dn495078.aspx

Q4. You are developing a Universal Windows Platform (UWP) app. The application architecture uses the Model-View-ViewModel (MVVM) pattern.

You are designing a form to add new contacts to the app. The form contains an input field named LastName and a Save button. You need to ensure that when LastName is empty, the Save button is disabled.

What should you use?

A. On the Save button, change the IsDefaulted property and the IsDefault property.

B. Use an InputType enumeration that has a Command member.

C. Use a CommandBinding object that contains a CanExecute event.

D. On the Save button, change the IsSealed value.

Correct 

Answer:

Explanation:

The CommandBinding.CanExecute event occurs when the command associated with this CommandBinding initiates a check to determine whether the command can be executed on the command target.

References:

https://msdn.microsoft.com/en-us/library/system.windows.input.commandbinding.canexecute(v=vs.110).aspx

Q5. You are developing a Universal Windows Platform (UWP) app that will display a list of contacts.

When the app loads, it will display the alphabet and provide users with the ability to zoom in on a letter to display all of the contacts whose name starts with that letter. The app will use a SemanticZoom control.

You need to identify which event you must use in the app. Which event should you identify?

A. ViewChangeStarted

B. Loaded

C. Tapped

D. ManipulationStarted

Correct 

Answer:

Explanation:

TheSemanticZoom.ViewChangeStarted eventoccurs when a view change is requested.

Incorrect:

Not B: Loaded occurs when a FrameworkElement has been constructed and added to the object tree, and is ready for interaction. Not C: Tapped occurs when an otherwise unhandled Tap interaction occurs over the hit test area of this element.

Not D: ManipulationStarted represents that the manipulation recognition logic has detected pointer movement.

Q6. You are developing a Universal Windows Platform (UWP) app that will support two displays. The primary display will have a maximum resolution of 1080 p. The secondary display will support a maximum resolution of 4 К and will not support interactivity.

Your need to ensure that the app can use the full resolution of each display.

What is the best approach to achieve the goal? More than one answer choice may achieve the goal. Select the BEST answer.

A. Set the AutoSizeMode property for the app.

B. Enable multiple display support by using the ApplicationView API.

C. Enable multiple display support by using the ProjectionManager API.

D. Set the AutoScaleMode property for the app.

Correct 

Answer:

Explanation:

Projection manager lets you project a separate window of your app on another screen.

When the second window is for display only, not for interaction then it is recommended that you use the projection manager.

References:

https://msdn.microsoft.com/en-us/library/windows/apps/dn495078.aspx

Q7. You are developing a cross-platform app by using Microsoft Visual Studio 2015. The app will be available to Windows, Android, and iOS devices.

You need to gather usage telemetry for the app across all three platforms. What should you use?

A. Code Coverage

B. Diagnostic Tools

C. IntelliTrace

D. Application Insights

Correct 

Answer:

Explanation:

Application Insights works by adding an SDK into your app, which sends telemetry to the Azure portal. Application Insights support iOS, Android, and Windows apps, J2EE and ASP.NET web applications, and WCF services.

References:

https://azure.microsoft.com/en-us/documentation/articles/app-insights-get-started/

Q8. You are packaging a Universal Windows Platform (UWP) app for the Microsoft Store.

You need to set the name of the app that will appear in the Store. Which element should you define in Package.appxmanifest?

A. the Name attribute in the Identity element

B. the Application element

C. the DisplayName attribute in the VisualElements element

D. the DisplayName element

Correct 

Answer:

Explanation:

In the .appxmanifest file, the entry for an app must specify certain attributes of the VisualElements element. Example:

<VisualElements DisplayName="My App" Description="A useful description." Logo="images\\icon.png"     SmallLogo="images\\small_icon.png" ForegroundText="dark" BackgroundColor="#FFFFFF" >

References:

https://msdn.microsoft.com/en-us/library/windows/apps/br211475.aspx

Q9. DRAG DROP

You are developing a Universal Windows Platform (UWP) app.

The app will display a text box named TextBox1 and a button named Button2.

If a user types in the text box, you need to ensure that the box is resized dynamically based on the size of the text. The buttons must always remain to the right of the text box and must always remain aligned.

How should you complete the code? To answer, drag the appropriate code elements to the correct targets. Each element may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.

Select and Place:

Answer:

Explanation:

The new RelativePanel implements a style of layout that is defined by the relationships between its child elements. It's intended for use in creating app layouts that can adapt to changes in screen resolution.

Example:

<RelativePanel>

<TextBox x:Name="textBox1" Text="textbox" Margin="5"/>

<Button x:Name="blueButton" Margin="5" Background="LightBlue" Content="ButtonRight" RelativePanel.RightOf="textBox1"/>

<Button x:Name="orangeButton" Margin="5" Background="Orange" Content="ButtonBelow" RelativePanel.RightOf="textBox1" RelativePanel.Below="blueButton"/>

</RelativePanel>

References: https://msdn.microsoft.com/library/windows/apps/dn894631.aspx#device_families

Q10. You are developing a Universal Windows Platform (UWP) app.

In MainPage.xaml, you have the following markup.

You plan to implement localization for the following cultures: 

de-DE

fr-CA 

en-US

You create a folder within the project named Strings that contains a subfolder for each culture. Each subfolder contains a resource file named Greetings.resw. You need to ensure that TextBlock appears by using the appropriate localization.

Which two modifications should you make to MainPage.xaml? Each correct answer presents part of the solution.

A. Replace x:Name with x:Phase.

B. Change "Greeting" to "Resources/Greeting".

C. Change "Greeting" to "Greetings/Greeting".

D. Replace x:Name with x:FieldModifier.

E. Replace x:Name with x:Uid.

F. Change "Greeting" to "Greetings.resw/Greeting".

Correct 

Answer: BE 

Explanation:

E: The keys of the key-value pairs are x:Uid values that are placed by the developer in the original XAML. These x:Uid values enable the API to track and merge changes that happen between the developer and the localizer during localization.

References:

http://stackoverflow.com/questions/14929590/resource-localization-use-of-xuid-refering-to-another-assemblys-resource

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