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70-355 Exam Questions - Online Test


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Q1. 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/

Q2. You are creating a Universal Windows Platform (UWP) app by using Microsoft Visual Studio 2015.

You discover that the app uses more memory than expected. You suspect that a method named Method1 is consuming most of the memory. You need to identify the changes in memory that are a direct result of executing Method1.

What should you do?

A. From Visual Studio, set a breakpoint on the method and immediately after the method.Fromthe Diagnostic Tools, clickTake Snapshotwhen each breakpoint is hit.

B. From the Debug tab in Visual Studio, clickStart Diagnostic Tools Without Debugging,selectApplication Timeline,and then clickStart.

C. From the Windows Performance Analyzer, record the memory consumption.

D. From Windows Performance Monitor, create a Data Collector Set (DCS). Start the DCS, run the app, and then stop the DCS.

Correct 

Answer:

Explanation:

Find memory leaks and inefficient memory while you’re debugging with the debugger-integrated Memory Usage diagnostic tool. The Memory Usage tool lets you take one or more snapshots of the managed and native memory heap.

Although you can collect memory snapshots at any time in the Memory Usage tool, you can use the Visual Studio debugger to control how your application executes while investigating performance issues. Setting breakpoints, stepping, Break All, and other debugger actions can help you focus your performance investigations on the code paths that are most relevant.

References:

https://msdn.microsoft.com/en-us/library/mt125494.aspx

Q3. You are developing a Universal Windows Platform (UWP) app.

You need to implement remote debugging of the app on a tablet device. What should you run on the tablet?

A. windbg.exe

B. msvsmon.exe

C. al.exe

D. msbuild.exe

Correct 

Answer: A

Explanation:

Remote Debugging Using WinDbg

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 need to create a storyboard for a Universal Windows Platform (UWP) app that you are designing.

For which application does Microsoft provide design templates for UWP apps?

A. Microsoft Publisher

B. Microsoft PowerPoint

C. Adobe Photoshop

D. Microsoft Sway

Answer: B

Explanation:

You can bring your ideas to life with storyboard shapes, text, animation, and all the other features that PowerPoint Storyboarding provides. Open Power Point Storyboarding and start with a blank slide. You should see the Storyboarding ribbon and Storyboard Shapes library.

References:https://msdn.microsoft.com/en-us/library/hh409276(v=vs.120).aspx

Q6. HOTSPOT

You are designing a Universal Windows Platform (UWP) app that will access external data sources. The data sources have the following requirements:

The data must be stored in a relational database. 

The data sources must be stored in a public cloud. 

The app must not connect directly to the database.

The app must access the data sources by using HTTP verbs.

You need to identify the appropriate data storage type and the appropriate method to use to access the data sources. What should you identify? To answer, select the appropriate options in the answer area.

Hot Area:

Answer:

Explanation:

Microsoft Azure SQL database is a relationaldatabase-as-a-servicein the cloud.

Through the .NET Web API you can access relational database through HTTP verbs..Net’s Web API is an easy way to implement a RESTful web service using all of the goodness that the .net framework provides.REST stands for ‘Representational State Transfer’ and it is an architectural pattern for creating an API that uses HTTP as its underlying communication method.

Incorrect:

Not: Microsoft AzureDocumentDB

DocumentDB is a NoSQL(not relational)document database for big data solutions handling JSON data that require easy scaling and high availability.

Not: Microsoft Azure Table storage

Azure Table storage is a service that stores unstructured NoSQL(not relational)data in the cloud.

Q7. You are creating a Universal Windows Platform (UWP) app by using Microsoft Visual Studio 2015.

You discover that the app uses more memory than expected. You suspect that a method named Method1 is consuming most of the memory. You need to identify the changes in memory that are a direct result of executing Method1.

What should you do?

A. From Visual Studio, set a breakpoint on the method and immediately after the method.Fromthe Diagnostic Tools, clickTake Snapshotwhen each breakpoint is hit.

B. From the Debug tab in Visual Studio, clickStart Diagnostic Tools Without Debugging,selectApplication Timeline,and then clickStart.

C. From the Windows Performance Analyzer, record the memory consumption.

D. From Windows Performance Monitor, create a Data Collector Set (DCS). Start the DCS, run the app, and then stop the DCS.

Correct 

Answer:

Explanation:

Find memory leaks and inefficient memory while you’re debugging with the debugger-integrated Memory Usage diagnostic tool. The Memory Usage tool lets you take one or more snapshots of the managed and native memory heap.

Although you can collect memory snapshots at any time in the Memory Usage tool, you can use the Visual Studio debugger to control how your application executes while investigating performance issues. Setting breakpoints, stepping, Break All, and other debugger actions can help you focus your performance investigations on the code paths that are most relevant.

References:

https://msdn.microsoft.com/en-us/library/mt125494.aspx

Q8. You are developing a Universal Windows Platform (UWP) app that will be published to the Microsoft Store.

The app will contain the following method.

JavaScript in the app will call the method. You need to implement the method. What should you do first?

A. Create a Windows Runtime Component project.

B. Add a class file to the project.

C. Create a portable class project.

D. Add the method to the App.xaml.cs file.

Correct 

Answer: A

Explanation:

By using the Windows Runtime, you can create components (essentially DLLs) in C++, C#, or Visual Basic, and call into them in a simple and natural way from a Windows Store app that's built by using JavaScript.

References:

https://msdn.microsoft.com/en-us/library/hh441572.aspx

Q9. 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.

Q10. DRAG DROP

You are developing a Universal Windows Platform (UWP) app. In MainPage.xaml, you have the following markup.

You need to create an event handler for the app. 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:

Example: Peer-to-peer navigation between two pages

private void HyperlinkButton_Click(object sender, RoutedEventArgs e)

{

this.Frame.Navigate(typeof(Page2),    name.Text);

}

References:

https://msdn.microsoft.com/en-us/library/windows/apps/mt465735.aspx