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NEW QUESTION NO: 30

DRAG DROP

Case Study

This is a case study. Case studies are not limited separately. You can use as much exam time as you would like to complete each case. However, there may be additional case studies and sections on this exam. You must manage your time to ensure that you are able to complete all questions included on this exam in the time provided.

To answer the questions included in a case study, you will need to reference information that is provided in the case study. Case studies might contain exhibits and other resources that provide more information about the scenario that is described in the case study. Each question is independent of the other question on this case study.

At the end of this case study, a review screen will appear. This screen allows you to review your answers and to make changes before you move to the next sections of the exam. After you begin a new section, you cannot return to this section.

To start the case study

To display the first question on this case study, click the Next button. Use the buttons in the left pane to explore the content of the case study before you answer the questions. Clicking these buttons displays information such as business requirements, existing environment, and problem statements. If the case study has an All Information tab, note that the information displayed is identical to the information displayed on the subsequent tabs. When you are ready to answer a question, click the Question button to return to the question.

Background

Fabrikam is a commercial bank. The primary customers are individuals and employers with up to 10,000 employees. Fabrikam provides Internet banking services to customers.

You are developing a Universal Windows Platform (UWP) app for Fabrikam that extends the Internet banking to a UWP app.

Business Requirements

Core functionality

Users must be able to access accounts, view balances, view recent transactions, and deposit checks by using the UWP app.

Usability

The app must use industry proven design patterns across the app. All navigational elements must be visible at all times.

Security

The app must provide secure transactions to protect customer privacy.

Technical Requirements

Data

The app must use a file based database. You must use a code first entity framework approach.

User interface

You must use a Model-View-ViewModel (MVVM) pattern.



Users must be able to access all content through the top-level navigation after they sign in.



The app must allow the user to upload up to 50 images (front and back) of checks to deposit.



During the upload process, the app must be responsive to any other user actions.



The app must only upload images when no other pending inputs are in the queue.



You must implement the following pages:



Network and web service

The app must meet the following requirements related to networking and web services:

Connect to a web service over a secure HTTP connection to upload images.



Connect to Fabrikam's core web service to retrieve account information.



Use networking technology already available in the .Net Framework.



Consume the JSON that the Fabrikam core web service provides.



User data and alerts

The app must meet the following requirements related to user data and alerts:

Download new monthly bank statements when possible. The download process must not affect the



performance of the app.

Report to the user when the statements are downloaded to the device.



Write a log entry when statement downloads are not successful.



Periodically check for user activity and automatically log the user out when there is no activity for more



than 15 minutes.

Security

The app must meet the following requirements related to security:

Use a multi-factor authentication (MFA) by using email and a verification code to identify the user.



Securely store credentials and retrieve credentials.



Automatically sign in the user irrespective of the device that is used to sign in to the app.



Store the resource name within the app itself.



Connect to an authentication app by using the URI schema fabrikam-security://oauth/.



Application Structure

AccountContext.cs

Relevant portions of the app files are shown below. Line numbers in the code segments are included for reference only and include a two-character prefix that denotes the specific file to which they belong.



ImageManager.cs

Relevant portions of the app files are shown below. Line numbers in the code segments are included for reference only and include a two-character prefix that denotes the specific file to which they belong.



ClientProxy.cs

Relevant portions of the app files are shown below. Line numbers in the code segments are included for reference only and include a two-character prefix that denotes the specific file to which they belong.



BkgTaskMgr.cs

Relevant portions of the app files are shown below. Line numbers in the code segments are included for reference only and include a two-character prefix that denotes the specific file to which they belong.



CredentialManager.cs

Relevant portions of the app files are shown below. Line numbers in the code segments are included for reference only and include a two-character prefix that denotes the specific file to which they belong.



MainPage.cs

Relevant portions of the app files are shown below. Line numbers in the code segments are included for reference only and include a two-character prefix that denotes the specific file to which they belong.



You need to insert code at line BT19 to configure the trigger to meet the technical requirements for User Data and Alerts.

How should you complete the code segment? 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.

Select and Place:



Answer: 



Explanation/Reference:

Explanation:

Box 1: TimeTrigger

Box 2: false

TimeTrigger(UInt32, Boolean) initializes a new instance of a time event trigger.

Syntax: public TimeTrigger(UInt32 freshnessTime, Boolean oneShot)

Parameters

freshnessTime UInt32

Specifies the number of minutes to wait before scheduling the background task. The system schedules the task within 15 minutes after freshnessTime elapses. If the OneShot property is false, freshnessTime specifies the interval between recurring tasks.

oneShot Boolean

True if the time event trigger will be used once; false if it will be used each time freshnessTime elapses From scenario:

User data and alerts

The app must meet the following requirements related to user data and alerts:

Periodically check for user activity and automatically log the user out when there is no activity for more



than 15 minutes.

Reference: https://docs.microsoft.com/en-us/uwp/api/windows.applicationmodel.background.timetrigger'



NEW QUESTION NO: 31

DRAG DROP

Case Study

This is a case study. Case studies are not limited separately. You can use as much exam time as you would like to complete each case. However, there may be additional case studies and sections on this exam. You must manage your time to ensure that you are able to complete all questions included on this exam in the time provided.

To answer the questions included in a case study, you will need to reference information that is provided in the case study. Case studies might contain exhibits and other resources that provide more information about the scenario that is described in the case study. Each question is independent of the other question on this case study.

At the end of this case study, a review screen will appear. This screen allows you to review your answers and to make changes before you move to the next sections of the exam. After you begin a new section, you cannot return to this section.

To start the case study

To display the first question on this case study, click the Next button. Use the buttons in the left pane to explore the content of the case study before you answer the questions. Clicking these buttons displays information such as business requirements, existing environment, and problem statements. If the case study has an All Information tab, note that the information displayed is identical to the information displayed on the subsequent tabs. When you are ready to answer a question, click the Question button to return to the question.

Background

You are developing an application named Timeline that presents information on a timeline. The app allows users to create items and enter details about the item. The app displays item names on a timeline. When users select an item name on the timeline, the app displays additional content about the item.

Business requirements

Timeline section

The timeline element of the app has the following layout requirements:



The timeline must adapt to the screen size and orientation of the device.



The timeline size must dynamically change if the window containing the content is resized by the user.



The user must be able to scroll through the timeline horizontally when the device is in landscape mode.



The user must be able to scroll through the timeline vertically when the device is in portrait mode.



The timeline must begin scrolling as soon as a scroll is detected. Scrolling must continue for a short



distance after the scroll input has stopped.

Scroll bars or panning controls must always be visible.



The following image depicts the layout for the timeline section of the app when the device is using landscape orientation:



The following image depicts the layout for the timeline section of the app when the device is using portrait orientation:



Content section

The content element of the app has the following layout requirements:

When a user selects an item on the timeline, the details for that item must display beneath or to the



right of the timeline.

The content section must display one page of information. The element must be a child of the selected



item in the timeline.

Users must be able to return to a previously selected event by pressing the Back button.



User interface

The user must be able to navigate the application using the interface below:



The Favorite button marks the current content to be displayed in a Favorites panel.



The Back and Forward buttons navigate through the app selection history. Both buttons must be



available on all devices.

The Notes button allows the user to manage notes about the current content.



The app must support touch, mouse, and stylus input.



The app layout must automatically adapt to the screen size and orientation.



Technical requirements

Layout

You identify the following layout requirements:

General

All user interface (UI) elements must continuously scale when a user resizes the window.



UI controls must be smaller and spaced closer together if there is a mouse or stylus available.



UI controls must be larger and spaced farther apart if the device supports touch and there is no mouse



or pointer available.

Timeline

The timeline must be displayed in a horizontal layout when the device is in a landscape orientation or



when the horizontal width is greater than the vertical height.

The timeline must be displayed in a vertical layout when the device is in a portrait orientation or when



the vertical height is greater than the horizontal width.

Each item in the past must be linked to the next item in the future.



Users must be able to scroll from past events to future events or from future events to past events.



The app must only allow one level of detail to be linked to each item in the timeline.



Optimization

You must optimize the app using the following guidelines:

You must minimize the time it takes to display content when an item on the timeline is selected.



The app must respect memory and resource constraints for all devices.



XAML coding style

All code and markup must conform to the following style guidelines:

Use resource dictionaries for styles that are used more than once.



Limit the use of nested panels.



Use built-in properties of existing panels instead of using separate style objects.



Use the navigation structure that best models the data without exceeding the requirements of the app.



Application structure

MainPage.xaml

Relevant portions of the app files are shown below. (Line numbers in the code segments are included for reference only and include a two-character prefix that denotes the specific file to which they belong.)



Settings.xaml

Relevant portions of the app files are shown below. (Line numbers in the code segments are included for reference only and include a two-character prefix that denotes the specific file to which they belong.)



ResourceDictionery.xaml

Relevant portions of the app files are shown below. (Line numbers in the code segments are included for reference only.)



MainPage.xaml.cs

Relevant portions of the app files are shown below. (Line numbers in the code segments are included for reference only and include a two-character prefix that denotes the specific file to which they belong.)



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.

Select and Place:



Answer: 



Explanation/Reference:

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>

Reference: https://docs.microsoft.com/en-us/windows/uwp/controls-and-patterns/app-bars



NEW QUESTION NO: 32

You are developing a Universal Windows Platform (UWP) app that uses XAML and C#. The app must use the Model-View-ViewModel (MVVM) pattern.

The user interface (UI) triggers an event.

You need to bind the event to a view model method.

What should you do?

A. Create a custom behavior and attach the behavior to the UI element. Bind the behavior's event trigger to the command declared in the view model.

B. Create an attached property of type ICommand. Bind the UI element's event to the attached property.

C. Assign the value of the DataContext property to the view model. Use the BindingExression.UpdateSource() method to update the data source.

D. Add a strongly-typed view model property to the view. In the code behind file for the view, invoke the view model method.

Answer: B

Explanation/Reference:

Explanation:

Commands are an implementation of the ICommand interface that is part of the .NET Framework. This interface is used a lot in MVVM applications.

Reference: https://msdn.microsoft.com/en-us/magazine/dn237302.aspx



NEW QUESTION NO: 33

Case Study

This is a case study. Case studies are not limited separately. You can use as much exam time as you would like to complete each case. However, there may be additional case studies and sections on this exam. You must manage your time to ensure that you are able to complete all questions included on this exam in the time provided.

To answer the questions included in a case study, you will need to reference information that is provided in the case study. Case studies might contain exhibits and other resources that provide more information about the scenario that is described in the case study. Each question is independent of the other question on this case study.

At the end of this case study, a review screen will appear. This screen allows you to review your answers and to make changes before you move to the next sections of the exam. After you begin a new section, you cannot return to this section.

To start the case study

To display the first question on this case study, click the Next button. Use the buttons in the left pane to explore the content of the case study before you answer the questions. Clicking these buttons displays information such as business requirements, existing environment, and problem statements. If the case study has an All Information tab, note that the information displayed is identical to the information displayed on the subsequent tabs. When you are ready to answer a question, click the Question button to return to the question.

Background

You are developing a Universal Windows Platform (UWP) app for LitWare, Inc. that will assist video artists.

The app allows artists to create videos, share videos through other mobile apps, and upload the videos through LitWare, Inc.'s web services. What helps set LitWare Inc.'s app apart from competitors is their focus on speed and performance.

Business Requirements

Support many devices

Users may have phones, tablets, or laptops. The app must support all devices with a fluid layout that



grows off-screen and adapts to each device.

Record video

Users must be able to record videos and view them in their videos library.



The app must display information about the recorded video.



Users must be able to edit the upload queue in the app.



Branding

The app must have consistent branding throughout all views.



Upload videos

The app must allow deferral and scheduling of video uploads.



Users must be able to view the status of uploaded videos.



Any videos created with this app or shared with this app must be uploaded without user interaction.



Download video

The app must have the option to automatically download videos.



Users must be able to initiate downloading of videos.



Share video

The app must allow be allowed to receive videos from other apps.



Technical Requirements

Support multiple devices

The app must support the following:

Use horizontal layout for larger screens.



User vertical layout for smaller screens.



Use one layout control per view.



The app must be compatible with current and future XBOX apps that use C++.

Uploading and downloading

The app must use a background operations to upload and download videos.



Code reuse

The app must use a common pool of XAML resources and custom controls. All custom controls must



use a consistent theme throughout the app.

You must create code that can be reused in C++, C#, JavaScript, whenever possible.



The app must call the background service to avoid duplication of code.



Security

End users must be authenticated using OAuth.



Web services must be authenticated.



Users must have the option to use single sign-on.



Recording

The app must use the microphone and webcam to support audio and video recording. In addition, the



app must support the use of the back and camera buttons, if present.

Integration

Other apps must be able to share videos with this app through a Universal Windows Platform (UWP)



app service.

Architecture and coding style

The app must follow the Model-View-ViewModel (MVVM) pattern.



The app's user interface (UI) must be optimized for performance.



The app must use compile time coding techniques over runtime.



Application structure

Package.appxmanifest

Relevant portions of the app files are shown below. Line numbers in the code segments are included for reference only and include a two-character prefix that denotes the specific file to which they belong.



BackgroundTask.cs

Relevant portions of the app files are shown below. Line numbers in the code segments are included for reference only and include a two-character prefix that denotes the specific file to which they belong.



You are a developer for Litware, Inc.'s Universal Windows Platform (UWP) app.

Access to the hardware within the app is not functioning correctly.

You need to add the capabilities to the package.appmanifest file.

Which markup segment should you insert at line PM16?

A:



B:



C:



D:



A. Option A

B. Option B

C. Option C

D. Option D

Answer: D

Explanation/Reference:

Explanation:

From scenario:

The app must use the microphone and webcam to support audio and video recording. In addition, the



app must support the use of the back and camera buttons, if present.

Users must be able to record videos and view them in their videos library.





NEW QUESTION NO: 34

DRAG DROP

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

A user terminates the app.

You need to ensure that the app initializes when the user starts the app.

How should you complete the method? To answers, drag the appropriate code segment 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.

Select and Place:



Answer: 



Explanation/Reference:

Explanation:

The OnLaunched method is called when an app is launched. It is passed a LaunchActivatedEventArgs parameter which provides, among other things, the arguments passed to the app, the identifier of the tile that launched the app, and the previous state that the app was in.

Box 1: OnLaunched

Box 2: LaunchActivatedEventArgs e

Reference: https://docs.microsoft.com/en-us/windows/uwp/launch-resume/app-lifecycle



NEW QUESTION NO: 35

DRAG DROP

Case Study

This is a case study. Case studies are not limited separately. You can use as much exam time as you would like to complete each case. However, there may be additional case studies and sections on this exam. You must manage your time to ensure that you are able to complete all questions included on this exam in the time provided.

To answer the questions included in a case study, you will need to reference information that is provided in the case study. Case studies might contain exhibits and other resources that provide more information about the scenario that is described in the case study. Each question is independent of the other question on this case study.

At the end of this case study, a review screen will appear. This screen allows you to review your answers and to make changes before you move to the next sections of the exam. After you begin a new section, you cannot return to this section.

To start the case study

To display the first question on this case study, click the Next button. Use the buttons in the left pane to explore the content of the case study before you answer the questions. Clicking these buttons displays information such as business requirements, existing environment, and problem statements. If the case study has an All Information tab, note that the information displayed is identical to the information displayed on the subsequent tabs. When you are ready to answer a question, click the Question button to return to the question.

Background

Fabrikam is a commercial bank. The primary customers are individuals and employers with up to 10,000 employees. Fabrikam provides Internet banking services to customers.

You are developing a Universal Windows Platform (UWP) app for Fabrikam that extends the Internet banking to a UWP app.

Business Requirements

Core functionality

Users must be able to access accounts, view balances, view recent transactions, and deposit checks by using the UWP app.

Usability

The app must use industry proven design patterns across the app. All navigational elements must be visible at all times.

Security

The app must provide secure transactions to protect customer privacy.

Technical Requirements

Data

The app must use a file based database. You must use a code first entity framework approach.

User interface

You must use a Model-View-ViewModel (MVVM) pattern.



Users must be able to access all content through the top-level navigation after they sign in.



The app must allow the user to upload up to 50 images (front and back) of checks to deposit.



During the upload process, the app must be responsive to any other user actions.



The app must only upload images when no other pending inputs are in the queue.



You must implement the following pages:



Network and web service

The app must meet the following requirements related to networking and web services:

Connect to a web service over a secure HTTP connection to upload images.



Connect to Fabrikam's core web service to retrieve account information.



Use networking technology already available in the .Net Framework.



Consume the JSON that the Fabrikam core web service provides.



User data and alerts

The app must meet the following requirements related to user data and alerts:

Download new monthly bank statements when possible. The download process must not affect the



performance of the app.

Report to the user when the statements are downloaded to the device.



Write a log entry when statement downloads are not successful.



Periodically check for user activity and automatically log the user out when there is no activity for more



than 15 minutes.

Security

The app must meet the following requirements related to security:

Use a multi-factor authentication (MFA) by using email and a verification code to identify the user.



Securely store credentials and retrieve credentials.



Automatically sign in the user irrespective of the device that is used to sign in to the app.



Store the resource name within the app itself.



Connect to an authentication app by using the URI schema fabrikam-security://oauth/.



Application Structure

AccountContext.cs

Relevant portions of the app files are shown below. Line numbers in the code segments are included for reference only and include a two-character prefix that denotes the specific file to which they belong.



ImageManager.cs

Relevant portions of the app files are shown below. Line numbers in the code segments are included for reference only and include a two-character prefix that denotes the specific file to which they belong.



ClientProxy.cs

Relevant portions of the app files are shown below. Line numbers in the code segments are included for reference only and include a two-character prefix that denotes the specific file to which they belong.



BkgTaskMgr.cs

Relevant portions of the app files are shown below. Line numbers in the code segments are included for reference only and include a two-character prefix that denotes the specific file to which they belong.



CredentialManager.cs

Relevant portions of the app files are shown below. Line numbers in the code segments are included for reference only and include a two-character prefix that denotes the specific file to which they belong.



MainPage.cs

Relevant portions of the app files are shown below. Line numbers in the code segments are included for reference only and include a two-character prefix that denotes the specific file to which they belong.



You need to add code at line IM14 to meet the user interface requirement.

How should you complete the relevant code segment? 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.

Select and Place:



Answer: 



Explanation/Reference:

Explanation:

Box 1: RunAsync

Box 2: CoreDispatcherPriority

Box 3: Normal

If you are on a worker thread and want to schedule work on the UI thread, use CoreDispatcher::RunAsync.

Always set the priority to CoreDispatcherPriority::Normal or CoreDispatcherPriority::Low.

Callbacks scheduled with CoreDispatcherPriority::Low priority are called when there are no pending input events. Use the CoreDispatcherPriority::Low priority to make your app UI more responsive.

From scenario:

User interface

The app must only upload images when no other pending inputs are in the queue.



Reference: https://docs.microsoft.com/en-us/uwp/api/windows.ui.core.coredispatcher'



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