You are implementing a WCF service library. You add a new code file that contains the following
code segment.
Namespace ContosoWCF
<ServiceContract()>
Public Interface IRateService
<OperationContract()>
Function GetCurrentRate() As Decimal
End Interface
Partial Public Class RateService
Implements IRateService
Public Function GetCurrentRate() As Decimal _
Implements IRateService.GetCurrentRate
Dim currentRate As Decimal =
GetRateFromDatabase()
Return currentRate
End Function
End Class
End Namespace

You build the service library and deploy its assembly to an IIS application. You need to ensure that
the GetCurrentRate method can be called from JavaScript. What should you do?

You are implementing an ASP.NET page. The page includes a method named
GetCustomerOrderDataSet that returns a DataSet. The DataSet includes a DataTable named
CustomerDetailsTable and a DataTable named OrderDetailsTable. You need to display the data in
OrderDetailsTable in a DetailsView control named dtlView. Which code segment should you use?

You are developing an ASP.NET Dynamic Data Web application. Boolean fields must display as Yes or
No instead of as a check box. You replace the markup in the default Boolean field template with the
following markup.

<asp:Label runat=”server” ID=”label” />
You need to implement the code that displays Yes or No. Which method of the
FieldTemplateUserControl class should you override in the BooleanField class?

You are developing an ASP.NET Web page that will display the median value from a sequence of
integer values. You need to create an extension method to compute the median value. Which
interface should you add the extension method to?