You are designing a Windows Presentation Foundation (WPF) application for your company
by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010. The business layer
of the application is implemented by using Windows Communication Foundation (WCF).
You plan to support nonrepudiation and data integrity for WCF messages. You need to
design the security strategy for the application. What should you do?

You are creating a Windows application by using Microsoft .NET Framework 4 and
Microsoft Visual Studio 2010. The business logic layer of the application is implemented by
using Windows Communication Foundation (WCF). You create a WCF service that contains
a single operation to upload large binary data files. You configure the binding of the WCF
service to enable data streaming. You need to ensure that the WCF service operation
receives binary data files along with a string parameter that contains the description of each
file. You create a service operation that receives a single parameter. What should you do
next?

You are designing a Windows Presentation Foundation (WPF) application by using
Microsoft .NET Framework 4 and Microsoft Visual Studio 2010. The application will be
deployed on Windows 7 computers in the United States and Europe. You need to ensure

that array data is sorted based on the culture of the operating system. What should you do?

You are designing an application by using Windows Presentation Foundation (WPF) and
Microsoft .NET Framework 4. The application retrieves customer data from an enterprise
resource planning (ERP) system. You need to ensure that the following requirements are
met: • Customer data is retrieved only once. • Customer data is available on multiple forms
within the application. • Forms can implement Two-Way binding to the customer data. What
should you do?

You are designing an application by using Windows Presentation Foundation (WPF) and
Microsoft .NET Framework 4. You create a control named HelpViewer to view the Help

documentation of the application. The HelpViewer control must be available to a windows in
the application. You need to ensure that the application allows users to perform the
following tasks: • Bookmark their location in the documentation and return to the bookmark
from any window. • Hide the HelpViewer control. • Dock the HelpViewer control. You create
a main window as a base class. What should you do next?

You are creating a Windows Presentation Foundation (WPF) application by using Microsoft
.NET Framework 4 and Microsoft SQL Server 2008. You create a window that allows users
to search for products that match a given name. Search results are displayed when the user
types each letter of the product name. You use a method named FindProducts to obtain the
list of products. Users report that when they type a letter of the product name, the window
stops responding for a varying amount of time. While the window stops responding, users
cannot type more letters. The window stops responding even when the search generates

few results. You need to ensure that the window responds while users type a name. What
should you do?

You are creating a Windows Presentation Foundation (WPF) application by using Microsoft
.NET Framework 4 and Microsoft Visual Studio 2010. The application will consist of several
data entry forms. Each data entry form requires a user to enter phone numbers and
addresses. You need to design a solution that promotes code reusability. What should you
do?

You are designing an application by using Windows Presentation Foundation (WPF) and
Microsoft .NET Framework 4. The application consists of multiple data entry screens. You
need to ensure that users can return to previous screens. You also need to ensure that
users can view a history of screens, What should you do?

You are designing an application by using Windows Presentation Foundation (WPF),
Microsoft .NET Framework 4, and Microsoft SQL Server 2008. The application will contain
several forms that include custom data validators. You need to ensure that data is validated
before the database updates occur. You also need to ensure that the validation logic can be
reused. How should you design the validation?

You are designing an application by using Microsoft .NET Framework 4 and Microsoft
Visual Studio 2010. The application is used mostly in a disconnected scenario. The
application requires offline data from a Microsoft SQL Server 2008 database. When the
application connects to the network, data will be modified and synchronized. You need to
ensure that the application does not access the database server directly to synchronize data
when online. Which technology should you use?