Microsoft 70-357 Dumps 2021

NEW QUESTION 1
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains n unique solution. Determine whether the solution meets the stated goals.
You need to implement the appropriate XAML layout (or the Timeline app. Solution: You create an instance of a RelativePanel class.
Does this meet the goal?

• A. Yes
• B. No

Answer: A

Explanation: RelativePanel lets you layout UI elements by specifying where they go in relation to other elements and in relation to the panel. By default, an element is positioned in the upper left corner of the panel.
 

NEW QUESTION 2
You are developing a Universal Windows Platform (UWP) a pp.
The app must be available on Windows Phone, Windows tablet devices, and Xbox.
When the app is running on a device, you need to determine which members of a specific class you can use.
Which of the following methods should you use?

• A. ApiInformation.IsPropertyPresent
• B. UserInformation.NameAccessAllowed
• C. Selector.GetIsSelectionActive
• D. AppExtensionCatalog.FindAllAsync

Answer: D

Explanation: The AppExtensionCatalog class represents a device. This class allows access to well- known device properties as well as additional properties specified during device enumeration.
A Successful completion of FindAllAsync results in a DeviceInformationCollection containing DeviceInformation objects.
 

NEW QUESTION 3
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution. Determine whether the solution meets the stated goals.
You must create a project for shared code.
Solution: You implement the shared code in a Class Library (Universal Windows). Does this meet the goal?

• A. Yes
• B. No

Answer: A

Explanation: The .NET Framework Portable Class Library project type in Visual Studio helps you build cross-platform apps and libraries for Microsoft platforms quickly and easily.
Portable class libraries can help you reduce the time and costs of developing and testing code. Use this project type to write and build portable .NET Framework assemblies, and then reference those assemblies from apps that target multiple platforms such as Windows and Windows Phone.
Even after you create a Portable Class Library project in Visual Studio and start developing it, you can change the target platforms. Visual Studio will compile your library with the new assemblies, which helps you identify the changes you need to make in your code.
From scenario:
The app must be compatible with current and future XBOX apps that use C++.
 

NEW QUESTION 4
DRAG DROP
You are building a Universal Windows Platform (UWP) app that displays a list of books.
The books will be displayed in a ListView control. You are binding to a collection of type BookDataGroup.
You need to create a DataTempate for your ListView that displays the book’s title and author. The title must be displayed before the author.
Which four markup segments should you use to develop the solution? To answer, move
the appropriate markup segments from the list of markup segments to the answer area and arrange them in the correct order.

Answer:

Explanation:
 

NEW QUESTION 5
DRAG DROP
You are developing a Universal Windows Platform (UWP) app.
Users can drag and drop images on the screen to share them with their friends.
You need to implement drag and drop for the app. Users must be able to drop images onto a blue rectangle that the app displays.
How should you complete the relevant markup? To answer, drag the appropriate markup segments to the correct targets. Each markup segment 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.

Answer:

Explanation: Box 1: AllowDrop
Box 2: DragOver
Box 3: Grid_DragOver
Box 4: Drop
Use the AllowDrop and CanDrag properties to designate the areas of your app valid for dragging and dropping.
The following markup shows how to set a specific area of the app as valid for dropping by using the AllowDrop in XAML. If a user tries to drop somewhere else, the system won't let them. If you want users to be able to drop items anywhere on your app, set the entire background as a drop target.
<Grid AllowDrop="True" DragOver="Grid_DragOver" Drop="Grid_Drop" Background="LightBlue" Margin="10,10,10,353">
<TextBlock>Drop anywhere in the blue area</TextBlock>
</Grid>
 

NEW QUESTION 6
DRAG DROP
You are developing a Universal Windows Platform (UWP) app that needs to run on multiple types of devices.
The app must detect whether a device has a physical camera button.
For devices that have a physical camera button, you need to ensure that the app continues to function.
How should you complete the code? To answer, drag the appropriate code segments to the correct location or locations. Each code segment 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.

Answer:

Explanation: Box 1: Windows.Phone.UI.Input
Box 2: ApiInformation
Box 3: IsTypePresent
Box 4: HardwareButtons
You could check and see if the backbutton is present to see if it is a mobile device
bool isHardwareButtonsAPIPresent = Windows.Foundation.Metadata.ApiInformation.IsTypePresent("Windows.Phone.UI.Input.H ardwareButtons")
 

NEW QUESTION 7
Note: This question It part of a series of that present the tame scenario. Each question in the series contains a unique solution. Determine whether the solution meets the stated goals.
You must create a project for shared code.
Solution: You implement the shared code in a .NET class library. Does this meet goal?

• A. Yes
• B. No

Answer: B

Explanation: The .NET Framework Portable Class Library, not a .NET class library, project type in Visual Studio helps you build cross-platform apps and libraries for Microsoft platforms quickly and easily.
Portable class libraries can help you reduce the time and costs of developing and testing code. Use this project type to write and build portable .NET Framework assemblies, and then reference those assemblies from apps that target multiple platforms such as Windows and Windows Phone.
Even after you create a Portable Class Library project in Visual Studio and start developing it, you can change the target platforms. Visual Studio will compile your library with the new assemblies, which helps you identify the changes you need to make in your code.
From scenario:
The app must be compatible with current and future XBOX apps that use C++.
 

NEW QUESTION 8
DRAG DROP
You need to download the bank statements and alert the user when the download is complete.
Which three actions should you perform in sequence? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.

Answer:

Explanation: From Scenario:
The app must meet the following requirements related to user data and alerts:
You can run code in the background by writing classes that implement the IBackgroundTask interface.
If you run any asynchronous code in your background task, then your background task needs to use a deferral. If you don't use a deferral, then the background task process can terminate unexpectedly if the Run method completes before your asynchronous method call has completed.
Request the deferral in the Run method before calling the asynchronous method. Save the deferral to a global variable so it can be accessed from the asynchronous method. Declare the deferral complete after the asynchronous code completes.
 

NEW QUESTION 9
Note: This question is part of a series of questions that present the same scenario. Each
question in the series contains a unique solution. Determine whether the solution meets the stated goals.
You must create a project for shared code.
Solution: You implement the shared code in a Windows Runtime component. Does this meet the goal?

• A. Yes
• B. No

Answer: A

Explanation:  

NEW QUESTION 10
HOTSPOT
You are developing a Universal Windows Platform (UWP) app that processes and displays data from your company’s personnel database.
Users report that one of the views in the UWP app loads slowly. You need to optimize the load time.
How should you complete the relevant markup? To answer, select the appropriate markup segment from each list in the answer area.

Answer:

Explanation: The {x:Bind} markup extension—new for Windows 10—is an alternative to {Binding}.
{x:Bind} lacks some of the features of {Binding}, but it runs in less time and less memory than {Binding} and supports better debugging.
In the following example, the background and foreground of the item are bound to functions to do conversion based on the color parameter
<DataTemplate x:DataType="local:ColorEntry">
<Grid Background="{x:Bind Brushify(Color)}" Width="240">
<TextBlock Text="{x:Bind ColorName}" Foreground="{x:Bind TextColor(Color)}" Margin="10,5" />
</Grid>
</DataTemplate>
 

NEW QUESTION 11
DRAG DROP
You need to create the user interface for the timeline.
Which four markup segments should you use to develop the solution? To answer, move the appropriate markup segments from the list of markup segments to the answer area and arrange them in the correct order.
NOTE: More than one order of answer choices is correct. You will receive credit for any of the correct orders you select.

Answer:

Explanation: Box 1: <Commandbar>
Command bars (also called "app bars") provide users with easy access to your app's most common tasks, and can be used to show commands or options that are specific to the user's context, such as a photo selection or drawing mode. They can also be used for navigation among app pages or between app sections. Command bars can be used with any navigation pattern.
XAML provides both the AppBar control and the CommandBar control. You should use the AppBar only when you are upgrading a Universal Windows 8 app that uses the AppBar, and need to minimize changes. For new apps in Windows 10, we recommend using the CommandBar control instead.
Box 2: <AppBarButton .. etc.
The CommandBar control is a general-purpose, flexible, light-weight control that can display both complex content, such as images or text blocks, as well as simple commands such as AppBarButton, AppBarToggleButton, and AppBarSeparator controls.
Box 3: <CommandBar.SecondaryCommands> etc.
The overflow menu is shown only when the command bar is open and the SecondaryCommands property is populated. The new dynamic overflow behavior will automatically move primary commands into the SecondaryCommands area when space is limited.
Box 4: </Commandbar>
Example: Here is a same command bar in its open state. The labels identify the main parts of the control.

This example creates the command bar shown above.
<CommandBar>
<AppBarToggleButton Icon="Shuffle" Label="Shuffle" Click="AppBarButton_Click" />
<AppBarToggleButton Icon="RepeatAll" Label="Repeat" Click="AppBarButton_Click"/>
<AppBarSeparator/>
<AppBarButton Icon="Back" Label="Back" Click="AppBarButton_Click"/>
<AppBarButton Icon="Stop" Label="Stop" Click="AppBarButton_Click"/>
<AppBarButton Icon="Play" Label="Play" Click="AppBarButton_Click"/>
<AppBarButton Icon="Forward" Label="Forward" Click="AppBarButton_Click"/>
<CommandBar.SecondaryCommands>
<AppBarButton Icon="Like" Label="Like" Click="AppBarButton_Click"/>
<AppBarButton Icon="Dislike" Label="Dislike" Click="AppBarButton_Click"/>
</CommandBar.SecondaryCommands>
<CommandBar.Content>
<TextBlock Text="Now playing..." Margin="12,14"/>
</CommandBar.Content>
</CommandBar>
 

NEW QUESTION 12
Note: This question it part of a series of questions that present the same scenario. Each question in the series contains a unique solution. Determine whether the solution meets the stated goals.
You are developing a Universal Windows Platform (UWP) app. Your app stores files on a user's device.
You need to be able to replace the existing files with new files generated by the user.
Solution you run the StoragaFile.GetParentAsync method to get a reference to the existing file. Then, you run the StorageFile.CreateStreamedFileAsyne method to create the- new file at that same location.
Does this meet the goal?

• A. yes
• B. No

Answer: A

Explanation: The GetParentAsync() method gets the parent folder of the current file. The CreateStreamedFileAsync method can be used to create a StorageFile that can be passed to other methods or passed to another app through app contracts.
 

NEW QUESTION 13
HOTSPOT
You need to insert code at line CP15 to retrieve the account balance for a user.
How should you complete the relevant code? To answer, select the appropriate code segment from each list in the answer area.

Answer:

Explanation: From scenario:
Users must be able to access accounts, view balances, view recent transactions, and deposit checks by using the UWP app.
Box 1: HttpClient
Box 2: GetAsync
Box 3: DataContractJsonSerializer
From scenario: Consume the JSON that the Fabrikam core web service provides.
 

NEW QUESTION 14
HOTSPOT
You are developing a Universal Windows Platform (UWP) app. The app does not display content properly on mobile devices. You need to support smaller window sizes.
How should you complete the relevant XAML markup? To answer, select the appropriate markup segment from each list in the answer area.

Answer:

Explanation: One of the tools that Microsoft gives us for building adaptive UIs in UWP apps is state triggers. The version of Windows 10 released at BUILD 2015 features one state trigger: a class named AdaptiveTrigger. AdaptiveTrigger has two important properties: MinWindowWidth and MinWindowHeight. You use AdaptiveTrigger in conjunction with Visual State Manager to adapt the UI to screens and windows of various sizes.
* Inline
The pane is always visible and doesn't overlay the content area. The pane and content areas divide the available screen real estate.
* CompactInline
A narrow portion of the pane is always visible in this mode, which is just wide enough to show icons. The default closed pane width is 48px, which can be modified with CompactPaneLength. If the pane is opened, it will reduce the space available for content, pushing the content out of its way.
 

NEW QUESTION 15
DRAG DROP
You are creating a Universal Windows Platform (UWP) app that takes pictures. You want to use the camera’s built-in interface for taking the pictures.
You need to capture an image from the device’s built-in camera.
How should you complete the method? To answer, drag the appropriate code segments to the correct location or locations. Each code segments 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.

Answer:

Explanation: Box 1: CameraCaptureUI
Box 2: CameraCaptureUI
Example: Using Windows.Media.Capture.CameraCaptureUI API to capture a photo CameraCaptureUI dialog = new CameraCaptureUI();
Size aspectRatio = new Size(16, 9); dialog.PhotoSettings.CroppedAspectRatio = aspectRatio;
StorageFile file = await dialog.CaptureFileAsync(CameraCaptureUIMode.Photo);
 

NEW QUESTION 16
HOTSPOT
You must evaluate the code in CredentialManager.cs.
For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.

Answer:

Explanation: Box 1: No
Box 2: Yes
Box 3: No
From scenario: the following code was used PassWordVault vault = new PasswordVault(); var credential = vault.RetrieveAll();
You have several options for retrieving user credentials from the Credential Locker after you have a reference to the PasswordVault object.
You can, as in this question, retrieve all the credentials the user has supplied for your app in the locker with the PasswordVault.RetrieveAll method.
 

NEW QUESTION 17
DRAG DROP
You need to launch the authentication app.
How should you complete the relevant code? To answer, drag the appropriate code segments to the correct location or locations. Each code segments 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.

Answer:

Explanation: Box 1: Uri
Box 2: UriKind.Relative
Box 3: Launcher.LaunchUriAsync
The Uri Constructor (Uri,Uri) initializes a new instance of the Uri class based on the combination of a specified base Uri instance and a relative Uri instance.
Syntax: public Uri( Uri baseUri,
Uri relativeUri
)
Example to launch to URI:
var success = await Windows.System.Launcher.LaunchUriAsync(uri);
 

NEW QUESTION 18
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution. Determine whether the solution meets the stated goals.
You must create a project for shared code.
Solution: You implement the shared code in a Shared Project. Does this meet the goal?

• A. Yes
• B. No

Answer: B

Explanation: The .NET Framework Portable Class Library project type in Visual Studio helps you build cross-platform apps and libraries for Microsoft platforms quickly and easily.
Portable class libraries can help you reduce the time and costs of developing and testing code. Use this project type to write and build portable .NET Framework assemblies, and then reference those assemblies from apps that target multiple platforms such as Windows and Windows Phone.
Even after you create a Portable Class Library project in Visual Studio and start developing it, you can change the target platforms. Visual Studio will compile your library with the new assemblies, which helps you identify the changes you need to make in your code.
From scenario:
The app must be compatible with current and future XBOX apps that use C++.