Question 1.
You are employed as an application developer at ABC.com. You make use of Microsoft .NET Framework 4 to develop Windows Presentation Foundation (WPF) applications. You have recenty created an application, and cofigured it to have a composite user control. You also configured the user control to have a TextBox control, named txtEntry. You then configure the user control to be stored in a window, and include the following code in the constructor of the user
control: 
AddHandler(TextBox.TextChangedEvent, new RoutedEventHandler(Audit_TextChanged), true);

Which of the following statements are TRUE? (Choose all that apply.)

A. A text-changed event handler, named Audit_TextChanged, was created for the txtEntry control.
B. Audit_TextChanged will stop running because the event is marked as handled by certain event handlers
C. Even though the event is marked as handled by certain event handlers, Audit_TextChanged will still run.
D. Audit_TextChanged will continue to run until the event is marked as handled.

Answer: A, C

Explanation:

Question 2.
You are employed as an application developer at ABC.com. You make use of Microsoft .NET Framework 4 to develop Windows Presentation Foundation (WPF) applications. After developing an application, named ABCApp22, you configure a Button control and a MenuItem control that will be hosted by a window. The Button control and the MenuItem control have both been named Add. You have configured the exact same RoutedCommand, named AddCommand, as the Command properties of these two controls. You then write the code shown below:
Private void CanAdd (object sender, CanExecuteRoutedEventArgs e) { ... }
You are then informed that the two controls should be disabled when the CanExecute property is set to to false.

Which combination of the following actions should you take? (Choose all that apply.)

A. You should consider having an event handler configured for the CanExecuteChanged event of the AddCommand command.
B. You should consider having a CommandBinding object added to the CommandBindings property of the window.
C. You should consider having a CommandBinding object added to the CommandBinding section of the MenuItem control.
D. You should consider having the CanAdd method called from within the event handler.
E. You should consider having the AddCommand inherited from the RoutedUICommand class.
F. You should consider having the Command property of CommandBinding set to the 
    AddCommand command.
G. You should consider having the CanAdd method called from within the constructor of the AddCommand command.
H. You should consider having the CanExecute property of the CommandBinding object set to The CanAdd method.

Answer: B, F, H

Explanation:

Question 3.
You are employed as an application developer at ABC.com. You make use of Microsoft .NET Framework 4 to develop Windows Presentation Foundation (WPF) applications.
You have created a new application, and written the code shown below:
MediaPlayer player = new MediaPlayer();
player.Open(new URI(AudioFilePath), UriKind.Relative)); player.play();
You then inserted this code into the button onclick event.

Which of the following statements are TRUE with regards to the configuration?

A. The media player will open as soon as a user clicks the button, but no file will be played.
B. The file that is stored in the AudioFilePath variable will be played as soon as the button is clicked by the user.
C. All files stored in the media player will be played in sequence.
D. All files stored in the media player will be played randomly.

Explanation:

Question 4.
You are employed as an application developer at ABC.com. You make use of Microsoft .NET Framework 4 to develop Windows Forms applications. After developing a new application, named ABCApp13, you include a custom class named ABCClient. You have configured a new object data source, and also added a BindingSource component named ABCclientBindingSource to a Windows Form. The ABCclientBindingSource component is configured to be data-bound to the ABCClient data source. You then configure the Windows form to have two TextBox controls for presenting and modifying ABCClient. You have bound the data of these controls to its own ABCclientBindingSource property. The Windows form is also configured to contain an ErrorProvider component, named errorProvider. The data entries for the TextBox controls will be validated by the ErrorProvider component. You want to configure the validation process to occur automatically.

Which of the following actions should you take?

A. You should consider throwing an exception when the value is invalid to apply the validation rules inside the TextChanged event handler of each TextBox control by throwing an exception when the value is invalid. You should also consider inserting the code shown below in the InitializeComponent method of the Windows Form. 
    this.errorProvider.DataSource = this.ABCclientBindingSource;
B. You should consider throwing an exception when the value is invalid to apply the validation rules inside the TextChanged event handler of each TextBox control by throwing an exception when the value is invalid. You should also consider inserting the code shown below in the InitializeComponent method of the Windows Form.
    this.errorProvider.DataSource = this.ABCclientBindingSource.DataSource;
    this.errorProvider.DataMember = this.ABCclientBindingSource.DataMember;
C. You should consider throwing an exception when the value is invalid to apply the validation rules inside the setter of each property of the ABCClient class. You should also consider inserting the code shown below in the InitializeComponent method of the Windows Form. this.errorProvider.DataSource = this.ABCclientBindingSource.DataSource;
    this.errorProvider.DataMember = this.ABCclientBindingSource.DataMember;
D. You should consider throwing an exception when the value is invalid to apply the validation rules inside the setter of each property of the ABCClient class. You should also consider inserting the code shown below in the InitializeComponent method of the Windows Form. this.errorProvider.DataSource = this.ABCclientBindingSource;

Answer: D

Explanation:

Question 5.
You are employed as an application developer at ABC.com. You make use of Microsoft .NET Framework 4 to develop Windows Forms applications. You have recently created a new application. You then wrote the code shown below:
Thread.CurrentThread.CurrentUICulture = Thread.CurrentThread.CurrentCulture;

Which of the following options are TRUE with regards to the code?

A. The user interface will make use of the culture settings that are configured in the Control Panel at present.
B. The user interface will make use of new culture settings.
C. The user interface will have no culture settings.
D. The user interface will make use of the culture settings that were installed with the operating system.

Answer: A

Explanation:

Question 6.
You are employed as an application developer at ABC.com. You make use of Microsoft .NET Framework 4 to develop Windows Presentation Foundation (WPF) applications. You are in the process of developing a new application, named ABCApp35, which has a server assembly, as well as a partially trusted client assembly configured. After configuring customized sandboxed application domain, you are required to make sure that you are able to run ABCApp35 in a partial-trust setting.

Which of the following actions should you take?

A. You should consider configuring the PartialTrustVisibilityLevel setting for the
    AllowPartiallyTrustedCallers attribute of the server assembly to be VisibleByVefault.
B. You should consider configuring the PartialTrustVisibilityLevel setting for the
    AllowPartiallyTrustedCallers attribute of the server assembly to be NotVisibleByDefault.
C. You should consider configuring the PartialTrustVisibilityLevel setting for the
    AllowPartiallyTrustedCallers attribute of the client assembly to be VisibleByDefault.
D. You should consider configuring the PartialTrustVisibilityLevel setting for the
    AllowPartiallyTrustedCallers attribute of the client assembly to be NotVisibleByDefault.

Answer: B

Explanation:

Question 7.
You are employed as an application developer at ABC.com. You make use of Microsoft .NET Framework 4 to develop Windows Forms applications. After creating a new client application, you configure a default form size in the UserScopedSetting of the the ApplicationSettingsBase class.
Then application makes use of the Form1 type form, which includes a FormSettings object named frmSettings1. You have been instructed to write code that allows for the user’s preferred form size to be used whenever the user opens the application.

Which of the following options should you write?

A. public void Form2_Load(object sender, EventArgs e) { frmSettings2.start();
    } public void Form2_FormClosing(object sender, FormClosingEventArgs e) {
    frmSettings2.FormSize = this.Size;
    frmSettings2.Save(); }
B. private void Form1_Load(object sender, EventArgs e) { frmSettings1.UABCrade();
    } private void Form1_FormClosing(object sender, FormClosingEventArgs e)
    { Form1.FormSize = this.Size;
    Form1.Delete(); }
C. private normal Form1_Load(object sender, EventArgs e) { this.Size = frmSettings2.FormSize;
    } public void Form2_FormClosing(object sender, FormClosingEventArgs e)
    { Form2.FormSize = this.Size;
    Form2.UABCrade(); }
D. private void Form1_Load(object sender, EventArgs e) { this.Size = frmSettings1.FormSize;
    } private void Form1_FormClosing(object sender, FormClosingEventArgs e)
    { frmSettings1.FormSize = this.Size;
    frmSettings1.Save(); }

Answer: D

Explanation:

Question 8.
You are employed as an application developer at ABC.com. You make use of Microsoft .NET Framework 4 to develop Windows Forms applications. You have been instructed to create a new application. The application must present a text message requesting users to update their settings. This should occur whenever a user starts the application.

Which of the following options suitably represents the required code?

A. sealed class FormSettings : ApplicationSettingsBase
    {
    [UserScopedSetting()] [DefaultSettingValue("Please update your settings.")]
    public String Description
    {
    get { return (String)this["Description"]; }
    set { this["Description"] = value;}
    }
    }
B. sealed class FormSettings : ApplicationSettingsBase
    {
    ApplicationScopedSetting()] [DefaultSettingValue("Please update your settings.")]
    public String Description
    {
    get { return (String)this["Description"]; }
    set { this["Description"] = value;}
    }
    }
C. sealed class FormSettings : ApplicationSettingsBase
    {
    [MachineSetting()] [SettingsDescription("Please update your settings.")]
    public String Description
    {
    get { return (String)this["Description"]; }
     set { this["Description"] = value;}
     }
     }
D. sealed class FormSettings : ApplicationSettingsBase
     {
     [UserScopedSetting()] [SettingsDescription("Description: Please update your settings.")]
     public String Description
     {
     get { return (String)this["Description"]; }
     set { this["Description"] = value;}
     }
     }
E. sealed class FormSettings : ApplicationSettingsBase
    {
    [ApplicationScopedSetting()] [SettingsDescription("Description: Please update your settings.")]
    public String Description
    {
    get { return (String)this["Description"]; }
    set { this["Description"] = value;}
    }
    }
F. sealed class FormSettings : ApplicationSettingsBase
    {
    [MachineSetting()] [SettingsDescription("Description: Please update your settings.")]
    public String Description
    {
    get { return (String)this["Description"]; }
    set { this["Description"] = value;}
    }
    }

Answer: A

Explanation:

Question 9.
You are employed as an application developer at ABC.com. You make use of Microsoft .NET Framework 4 to develop Windows Presentation Foundation (WPF) applications. You are in the process of developing a new application named ABCApp13. ABCApp13 must be able to present data to application users two consecutive pages at one time.

Which of the following actions should you take?

A. You should consider having an XMLDocumentReader control configured.
B. You should consider having a FlowDocumentReader control configured.
C. You should consider making use of the Microsoft Word Viewer.
D. You should consider making use of the XPS Reader.

Answer: B

Explanation:

Question 10.
You are employed as an application developer at ABC.com. You make use of Microsoft .NET Framework 4 to develop Windows Presentation Foundation (WPF) applications. You are in the process of developing a new application named ABCApp35. You have been informed that ABCApp35 should have a layout panel configured. The layout panel used should allow for child objects to be organized and displayed vertically. The layout panel should not, however, require the child objects to be resized.

Which of the following actions should you take?

A. You should consider making use of the Grid panel layout.
B. You should consider making use of the Canvas panel layout.
C. You should consider making use of the Lock layout.
D. You should consider making use of a Stack panel layout.

Answer: D

Explanation:

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