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) 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 evaluating an existing Windows Presentation Foundation (WPF) application. The
WPF application runs in a Web browser as a XAML browser application (XBAP). The WPF
application runs in the Intranet zone with Full Trust. A client certificate for the WPF
application has been generated. Users are unable to access the WPF application. You
locate the following message in the security log: “User has refused to grant required
permissions to the application.” Users state that they are clicking OK in all message boxes
that appear. You need to recommend an approach for ensuring that the WPF application
runs correctly on all client computers. Which two actions should you recommend? (Each
correct answer presents part of the solution. Choose two.)

You are designing an n-tier Windows solution that includes a data entry application. The
solution uses Microsoft .NET Framework 4 and Microsoft SQL Server 2008. The data entry
application sends customer orders to a middle-tier server. The middle-tier server sends
orders to a set of services that perform operations on the orders. Business rules determine
which services to call and whether to run them in sequence or in parallel. The business
rules are complex and data dependent. The Windows solution must meet the following
requirements: • Optimize application performance by using dynamic load balancing. • Allow
for business rules to be changed at runtime. You need to recommend an approach that

meets the requirements. What should you recommend?

You are reviewing an existing Windows application that uses .NET Framework 4. When the
user clicks a button, the application sequentially processes thousands of image files
contained in a directory. The user interface becomes unresponsive while the application
processes the files. You have the following requirements: • Modify the button’s click event. •
Increase application throughput by processing multiple image files concurrently. • Ensure
that the user interface remains responsive while the application processes the image files.
You need to recommend an approach for meeting the requirements. What should you
recommend?

You are designing an n-tier .NET Framework 4 solution that includes a Windows
Presentation Foundation (WPF) application. You need to recommend an approach for
ensuring that the solution can support 5,000 concurrent users. What should you
recommend?

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?