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Microsoft PRO: Design & Develop Wndws Apps Using MS .NET Framework 4 Sample Questions:

1. You are designing 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 duplex bidirectional WCF service that contains a single operation. The service operation sends the result back to the client application by using a two-way callback operation.
You plan to design a service interaction strategy.
You need to ensure that deadlocks are prevented.
What should you do?

A) Configure the CallbackBehaviorAttribute attribute to use the Synchronization context in the callback class.
B) Configure the CallbackBehaviorAttribute attribute to use the Reentrant or Multiple concurrency mode in the callback class.
C) Configure the ServiceBehaviorAttribute attribute to use the Reentrant or Multiple concurrency mode in the service class.
D) Configure the ServiceBehaviorAttribute attribute to use the Synchronization context in the service class.

2. You are designing a Windows application by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
You need to use a replacement culture for the application at runtime.
You also need to ensure that the information in the custom culture will be available to the application.
Which two tasks should you perform? (Each correct answer presents part of the solution. Choose two.)

A) Restart the process that is displaying the user interface.
B) Register the replacement culture by using the CultureInfo class.
C) Register the replacement culture by using the CultureAndRegionInfoBuilder class.
D) Call the Save method of the CultureAndRegionInfoBuilder class instance.

3. You are designing a Windows Presentation Foundation (WPF) application by using
Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
The application will consist of a user interface (UI) tier and a middle tier. The middle tier will
be implemented by using Windows Communication Foundation (WCF).
You plan to design the exception handling strategy for the application. Each method in the middle tier will contain the following catch block. Catch e AsArgumentNullException.
Throw e
When testing the application, you discover that all ArgumentNullExceptions that occur in
the middle tier do not contain accurate stack trace information.
What should you do?

A) Use a DispatcherUnhandledExceptionEvent handler in the UI tier.
B) Create an ArgumentNullException handler in the UI tier.
C) Remove the exception parameter from the ArgumentNullException handler.
D) Use a DispatcherUnhandledExceptionEvent handler in the middle tier.

4. You are upgrading a stand-alone Windows Presentation Foundation (WPF) application and an XAML browser application (XBAP) to Microsoft .NET Framework 4.
You plan to add .NET 4 types and members to both applications.
Both applications consume a common utility assembly that modifies files on a local file system. The utility assembly requires full trust.
You need to ensure that both applications can use the common utility assembly without any security-related exceptions.
What should you do?

A) Change the <supportedRuntime> element for the XBAP application to the .NET Framework 3.5.
B) Apply the AllowPartiallyTrustedCallersAttribute attribute to the utility assembly.
C) Change the <supportedRuntime> element for the WPF application to the .NET Framework 3.5.
D) Apply the AllowPartiallyTrustedCallersAttribute attribute to the XBAP application.

5. You are designing a sales and inventory tracking system by using Microsoft Visual Studio 2010 and Microsoft SQL Server 2008.
The sales, inventory, and shipping tables will reside in different databases on different database servers.
You need to ensure that the tables are updated simultaneously.
What should you do?

A) Use Microsoft Sync Framework.
B) Use the ADO.NET Entity Framework.
C) Use Distributed transactions.
D) Use LINQ to SQL.

Solutions: