默认题库 - MCPD(70-511)

单选题

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You plan to implement a test strategy for the application. You need to ensure that the test strategy meets the following requirements: Test data can be added to the test project without recompiling. Multiple variations of a test can be executed at run time. What should you do? （）

A. Use IntelliTrace.
B. Use data-driven tests.
Create a single test class.
D. Create a test method for each data variation.

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单选题

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You add a property named ServiceContext to a control. You need the value of ServiceContext to flow to the child controls exactly like the value of the DataContext property of the FrameworkElement class. What should you do? （）

A. Inherit the control class from the DependencyObject class.
B. Register a dependency property. In the options settings of the property metadata, specify the Inherits option.
C. Declare a new property. In the get and set methods of the new property, create an instance of the TraversalRequest class.
Declare a new property. In the get method of the new property call VisualTreeHelper.GetParent. In the set method of the new property, call VisualTreeHelper.GetChild.

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单选题

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You create a custom control named Wheel. You need to ensure that the Speed property of Wheel can be animated. What should you do?（）

A. Inherit the DependencyObject class.
B. Declare the Speed property as a dependency property.
C. Declare an animation of the Speed property from within the code-behind file.
D. Implement the System.Windows.Media.Animation.IAnimatable interface with the Wheel class.

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多选题

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. The application uses the background worker process (BWP). When the user clicks a button, the background worker executes a method named DoCalculations asynchronously. You need to implement a progress bar on the user interface (UI) that informs the user of the progress of DoCalculations. Which two actions should you perform?（）

A. Modify the Value property of the progress bar in DoCalculations.
B. Modify the Value property of the progress bar in the ProgressChanged event handler of the background worker.
C. Modify the Value property of the progress bar in the RunWorkerCompleted event handler of the background worker.
D. Call the ReportProgress method of the background worker in DoCalculations.
E. Call the ReportProgress method of the background worker in the DoWork event handler of the background worker.

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单选题

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. The application uses the LINQ ParallelEnumerable. AsParallel method to perform multiple queries on a database. You need to ensure that queries can execute on separate threads concurrently. What should you do? （）

A. Use the AsOrdered method.
B. Use the SelectMany method.
C. Use the AutoBuffered option in the WithMergeOptions method.
D. Use the WithExecutionMode method with the ParallelExecutionMode.ForceParallelism parameter.

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多选题

You use Microsoft .NET Framework 4 to create a custom Windows Presentation Foundation (WPF) application. Your environment includes several WPF applications. The applications use the same logo and style configuration as part of a corporate standard. You need to ensure that the existing applications can be updated to use the same logo and style settings without recompiling. Which two actions should you perform?（）

A. Mark the resource as an embedded resource in each application.
B. Create a resource in an XAML file that contains the logo and style configurations.
Create a resource in a custom control that contains the logo and style configurations.
D. Add the resource as a ResourceDictionary in the MergedDictionaries collection of each application.
E. Use ResourceManager to read the content of the resource. Manually assign the style configurations included in the resource file to the appropriate control in each application.

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单选题

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You want to add an audio player that plays .wav or .mp3 files when the user clicks a button. You plan to store the name of the file to a variable named SoundFilePath. You need to ensure that when a user clicks the button, the file provided by SoundFilePath plays. What should you do?（）

A. Write the following code segment in the button onclick event. System.Media. SoundPlayer player = new System.Media. SoundPlayer(SoundFilePath); player.play();
B. Write the following code segment in the button onclick event. MediaPlayer player = new MediaPlayer(); player.Open(new URI(SoundFilePath), UriKind.Relative)); player.play();
C. Use the following code segment from the PlaySound() Win32 API function and call the PlaySound function in the button onclick event. [sysimport(dll="winmm.dll")] public static extern long PlaySound(String SoundFilePath, long hModule, long dwFlags);
D. Reference the Microsoft.DirectX Dynamic Link Libraries. Use the following code segment in the button onclick event. Audio song = new Song(SoundFilePath); song.CurrentPosition = song.Duration; song.Play()

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单选题

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You add a ListBox control to the application. The ListBox control is data-bound to an instance of a custom collection class of the Product objects named ProductList. The number of items of the data-bound collection is fixed. However, users can modify the properties of each of the Product objects in the collection. You need to ensure that changes made on the Product objects are automatically reflected in the ListBox control. What should you do?（）

A. Implement the INotifyPropertyChanged interface in the Product class.
B. Implement the INotifyCollectionChanged interface in the ProductList class.
C. Set the Mode property of the Binding object of the ListBox control to TwoWay.
D. Set the UpdateSourceTrigger property of the Binding object of the ListBox control to PropertyChanged.

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单选题

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application that displays a high-resolution graphic image named Image1.jpg. You need to limit the width of the image to 200 pixels. You also need to preserve the aspect ratio of the image. Which code fragment should you use?（）

A. <img> <img>
B.
C. <img>

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单选题

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application named MyApp.exe. You use Microsoft Windows Installer to package the application. You create an icon file named Application.ico. You need to associate Application.ico with MyApp.exe when it is deployed. What should you do?（）

A. Use the File Types Editor tool.
B. Rename the icon file to MyApp.exe .ico.
C. Set the AddRemoveProgramsIcon property to Application.ico.
D. Use the File System Editor tool to set the Icon property to Application.ico.

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