You design a Windows Presentation Foundation (WPF) application that interacts with a
Windows Communication Foundation (WCF) Web service. The WCF Web service throws
exceptions of type Exception. The WPF application crashes when the WCF Web service
throws an exception. You need to recommend an error-handling strategy that allows users
to submit updated data to the WCF Web service without restarting the WPF application.
What should you recommend?

You are designing a Windows Presentation Foundation (WPF) application. You have the
following requirements: • Run client-side validation tests on a large result set from a
Microsoft SQL Server 2008 database. • Validate each row of data without storing the entire
result set in memory. You need to recommend a data access technology. What should you
recommend?

You are designing updates to a Windows solution that processes complex scientific data.
The solution extracts analyzed data from Microsoft Excel by using an application-level
add-in. You have the following requirements: • Deploy the Excel add-in to client machines
with the application. • Ensure that the solution supports Excel 2007 and Excel 2010. •
Minimize the size of the deployment package. You need to recommend an approach that
meets the requirements. What should you recommend?

You are designing a Windows Presentation Foundation (WPF) application. The application
data files have the file name extension.abc. The WPF application installer must meet the
following requirements: • Add a shortcut to the desktop. • Install infrequently used
assemblies on demand. • Associate the .abc file name extension with the WPF application. •

Roll back the installation in the event of a failure. You need to recommend a deployment
method. What should you recommend?

You are designing a Windows Presentation Foundation (WPF) application. The main
window of the WPF application includes two panels: panel1 and panel2. The WPF
application must meet the following requirements: • Panel2 must be enabled only after
users have entered values into multiple text boxes in panel1. • The background color of
panel2 must be set to a specific color based on one of the text box values in panel1. • The
background color of panel2 must be set at the same time the panel is enabled. You need to
recommend an approach for meeting the requirements. What should you recommend?

You are designing a Windows Presentation Foundation (WPF) data entry application. The
application uses data binding to bind controls in the user interface (UI) to business objects.
The UI uses validation rules for each input control. The data validation rules change based
on the state of the business object. You need to recommend a validation strategy that will
allow changes to the validation rules without changes to the UI code. What should you
recommend?

You are designing an n-tier Windows application by using Microsoft .NET Framework 4,
Microsoft Visual Studio 2010, and Microsoft SQL Server 2008. The application will replace
an existing client/server application. The existing application was created by using Microsoft
Visual Basic 6.0 and consists of a series of COM components that access a SQL Server
database. You plan to move the existing COM components into a Windows Communication

Foundation (WCF) tier. You need to ensure that the COM components can be replaced
without impacting the existing user interface (UI) tier. You also need to ensure that the COM
components can be replaced separately. What should you do?

You are designing a Windows client application by using Microsoft .NET Framework 4 and
Microsoft Visual Studio 2010. The application will read and write data that is stored in a
mainframe application. A hardware device that is located between the application and the
mainframe removes all XML-formatted messages. You need to ensure that the application
can request and receive data from the mainframe application. What should you create?

You are designing a Windows application by using Microsoft .NET Framework 4 and
Microsoft Visual Studio 2010. You plan to add a feature to the application. The application
will be used in several different locales. The application will send data to a centralized

server and log the date and time information. You need to ensure that the date and time
information includes the local Universal Time Coordinate (UTC) offset value. Which class
should you use?

You are designing a Windows application by using Microsoft .NET Framework 4 and
Microsoft Visual Studio 2010. The application retrieves data from multiple heterogeneous
data sources. The retrieved data is aggregated into a single record set. You need to ensure
that the application takes advantage of new multi-core server processors. Which technology
should you use?