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Code d'Examen: 70-689
Nom d'Examen: Microsoft (Upgrading Your Skills to MCSA Windows 8)
Questions et réponses: 75 Q&As
Code d'Examen: 070-506
Nom d'Examen: Microsoft (Microsoft Silverlight 4, Development)
Questions et réponses: 153 Q&As
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NO.1 You are developing a Silverlight 4 application. You define an Invoice object according to the following
code segment.
public class Invoice
{
public int InvoiceId { get
set
}
public double Amount { get
set
}
public Supplier Supplier { get
set
}
public DateTime InvoiceDate { get
set
}
public DateTime PayDate { get
set
}
public string InvoiceDescription { get
set
}
}
You need to display a list of invoices that have the following properties displayed on each line: InvoiceId,
Amount, and InvoiceDate.
Which XAML fragment should you use?
A. <ListBox x:Name="InvoiceListBox">
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding Path=InvoiceId}" />
<TextBlock Text="{Binding Path=Amount}" />
<TextBlock Text="{Binding Path=InvoiceDate}" />
</StackPanel>
</ListBox>
B. <ListBox x:Name="InvoiceListBox">
<StackPanel Orientation="Horizontal">
<ListBoxItem>
<TextBlock Text="{Binding Path=InvoiceId}" />
</ListBoxItem>
<ListBoxItem>
<TextBlock Text="{Binding Path=Amount}" />
</ListBoxItem>
<ListBoxItem>
<TextBlock Text="{Binding Path=InvoiceDate}" />
</ListBoxItem>
</StackPanel>
</ListBox>
C. <ListBox x:Name="InvoiceListBox">
<ListBox.Items>
<ItemsPanelTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding Path=InvoiceId}" />
<TextBlock Text="{Binding Path=Amount}" />
<TextBlock Text="{Binding Path=InvoiceDate}" />
</StackPanel>
</ItemsPanelTemplate>
</ListBox.Items>
</ListBox>
D. <ListBox x:Name="InvoiceListBox">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding Path=InvoiceId}" />
<TextBlock Text="{Binding Path=Amount}" />
<TextBlock Text="{Binding Path=InvoiceDate}" />
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
Answer: D
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NO.2 You are developing an application by using Silverlight 4 and Microsoft.NET Framework 4.
You create a Windows Communication Foundation (WCF) Data Service. You add a service reference to
the WCF Data Service named NorthwindEntities in the Silverlight application. You also add a
CollectionViewSource object named ordersViewSource in the Silverlight application.
You add the following code segment. (Line numbers are included for reference only.)
01 void getOrders_Click(object sender, RoutedEventArgs e)
02 {
03 var context = new NorthwindEntities()
04
05 var query = from order in context.Orders
06 select order
07
08 }
You need to retrieve the Orders data from the WCF Data Service and bind the data to the
ordersViewSource object.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A. Add the following code segment at line 04.
var obsCollection = new ObservableCollection<Order>()
B. Add the following code segment at line 04.
var dsOrders = new DataServiceCollection<Order>()
dsOrders.LoadCompleted += new EventHandler<LoadCompletedEventArgs>(
(dsc, args) =>
{
ordersViewSource.Source = dsOrders
})
C. Add the following code segment at line 07.
dsOrders.LoadAsync(query)
D. Add the following code segment at line 07.
dsOrders.Load(query)
E. Add the following code segment at line 07.
query.ToList().ForEach(o => obsCollection.Add(o))
ordersViewSource.Source = obsCollection
Answer: B, C
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NO.3 You are developing a Silverlight 4 application.
The application contains an XAML page that defines the following Grid control.
<Grid Name="gridBody" >
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition />
</Grid.RowDefinitions>
<TextBlock Text="Employee Info" />
<TextBlock Text="Please enter employee info" Grid.Row="1" Height="20" VerticalAlignment="Top" />
<TextBox x:Name="EmpInfo" Grid.Row="1" Margin="0,25,0,0" TextWrapping="Wrap" />
...
</Grid>
The codebehind file for myPage.xaml contains the following code segment. (Line numbers are included
for reference only.)
01 public myPage()
02 {
03 InitializeComponent()
04
05 UserControl control = new MyCustomControl()
06
07 }
You need to replace the contents of the second row of gridBody with a user control of the
MyCustomControl type.
Which code segment should you insert at line 06?
A. gridBody.Children.Insert(1, control)
B. gridBody.RowDefinitions.Remove(gridBody.RowDefinitions[1])
gridBody.Children.Insert(1, control)
C. gridBody.Children.Clear()
Grid.SetRow(control, 1)
gridBody.Children.Add(control)
D. List<UIElement> remove = gridBody.Children.Where(c => c is FrameworkElement &&
Grid.GetRow((FrameworkElement)c) == 1).ToList()
foreach (UIElement element in remove)
{
gridBody.Children.Remove(element)
}
Grid.SetRow(control, 1)
gridBody.Children.Add(control)
Answer: D
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NO.4 You have a Silverlight 4 application that uses isolated storage. You create an application that has a 5
MB file that must be saved to isolated storage.
Currently, the application has not allocated enough isolated storage to save the file.
You need to ensure that the application prompts the user to increase the isolated storage allocation. You
also need to ensure that only the minimum amount of space needed to save the 5 MB file is requested.
Which code segment should you use?
A. using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
var neededSpace = 5242880
if (store.IncreaseQuotaTo(neededSpace))
{
...
}
}
B. using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
var neededSpace = 5242880
if (store.IncreaseQuotaTo(store.Quota + neededSpace))
{
...
}
}
C. using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
var neededSpace = 5242880
if (store.IncreaseQuotaTo(
store.AvailableFreeSpace + neededSpace
))
{
...
}
}
D. using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
var neededSpace = 5242880
if (store.IncreaseQuotaTo(
store.UsedSize + neededSpace
))
{
...
}
}
Answer: D
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NO.5 }
NO.6 You are developing an application by using Silverlight 4 and Microsoft.NET Framework 4.
The application contains the following XAML fragment.
<TextBlock x:Name="QuoteOfTheDay" />
The application calls a Windows Communication Foundation (WCF) service named MyService that
returns the quote of the day and assigns it to the QuoteOfTheDay TextBlock.
The application contains the following code segment. (Line numbers are included for reference only.)
01 var client = new MyService.MyServiceClient()
02 client.GetQuoteOfTheDayCompleted += (s, args) => QuoteOfTheDay.Text = args.Result
03 client.GetQuoteOfTheDayAsync()
You need to handle errors that might occur as a result of the service call. You also need to provide a
default value of "Unavailable" when an error occurs.
Which code segment should you replace at lines 02 and 03?
A. QuoteOfTheDay.Text = "Unavailable"
client.GetQuoteOfTheDayCompleted += (s, args) => QuoteOfTheDay.Text = args.Result
client.GetQuoteOfTheDayAsync()
B. client.GetQuoteOfTheDayCompleted += (s, args) =>
{
if (args.Result != null)
{
QuoteOfTheDay.Text = args.Result
}
else
{
QuoteOfTheDay.Text = "Unavailable"
}
}
client.GetQuoteOfTheDayAsync()
C. client.GetQuoteOfTheDayCompleted += (s, args) => QuoteOfTheDay.Text = args.Result
try
{
client.GetQuoteOfTheDayAsync()
}
catch (Exception ex)
{
// TODO: handle exception
QuoteOfTheDay.Text = "Unavailable"
}
D. client.GetQuoteOfTheDayCompleted += (s, args) =>
{
if (args.Error == null)
{
QuoteOfTheDay.Text = args.Result
}
else
{
// TODO: handle error
QuoteOfTheDay.Text = "Unavailable"
}
}
client.GetQuoteOfTheDayAsync()
Answer: D
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NO.7 You are developing an application by using Silverlight 4 and Microsoft.NET Framework 4. The
application has a TextBox control named txtName.
You need to handle the event when txtName has the focus and the user presses the F2 key.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A. txtName.KeyDown += new KeyEventHandler(txtName_KeyDown)
B. txtName.LostFocus += new RoutedEventHandler(txtName_LostFocus)
C. txtName.TextChanged += new TextChangedEventHandler(txtName_TextChanged)
D. void txtName_TextChanged(object sender, TextChangedEventArgs e)
{
if ((Key)e.OriginalSource == Key.F2)
{
//Custom logic
}
}
E. void txtName_KeyDown(object sender, KeyEventArgs e)
{
if (e.Key == Key.F2)
{
//Custom logic
}
}
F. void txtName_LostFocus(object sender, RoutedEventArgs e)
{
if ((Key)e.OriginalSource == Key.F2)
{
//Custom logic
}
}
Answer: A, E
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NO.8 You are developing a Silverlight 4 application.
The application defines the following three event handlers. (Line numbers are included for reference
only.)
01 private void HandleCheck(object sender, RoutedEventArgs e)
02 {
03 MessageBox.Show("Checked")
04 }
05
06 private void HandleUnchecked(object sender, RoutedEventArgs e)
07 {
08 MessageBox.Show("Unchecked")
09 }
10
11 private void HandleThirdState(object sender, RoutedEventArgs e)
12 {
13 MessageBox.Show("Indeterminate")
14 }
You need to allow a check box that can be selected, cleared, or set to Indeterminate. You also need to
ensure that the event handlers are invoked when the user changes the state of the control.
Which XAML fragment should you use?
A. <CheckBox x:Name="cb2" Content="Three State CheckBox"
IsChecked="True" Checked="HandleCheck"
Indeterminate="HandleUnchecked" Unchecked="HandleUnchecked" />
B. <CheckBox x:Name="cb2" Content="Three State CheckBox"
IsThreeState="True" Checked="HandleCheck"
Indeterminate="HandleThirdState" Unchecked="HandleUnchecked" />
C. <CheckBox x:Name="cb2" Content="Three State CheckBox"
IsHitTestVisible="True" Checked="HandleCheck"
Indeterminate="HandleThirdState" Unchecked="HandleUnchecked" />
D. <CheckBox x:Name="cb2" Content="Three State CheckBox"
IsEnabled="True" Checked="HandleCheck"
Indeterminate="HandleUnchecked" Unchecked="HandleUnchecked" />
Answer: B
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