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

2. You are designing a Windows Forms application.
You intend to display graphics on a form in the application by using a third-party Windows
Presentation Foundation (WPF) control.
You need to recommend a control for hosting the third-party WPF control.
What should you recommend?

A) A WindowsFormsHost control
B) A Panel control
C) A Canvas control
D) AnElementHost control

3. You are designing a Windows Presentation Foundation (WPF) application that accesses a business tier. The business tier is implemented as a Windows Communication Foundation (WCF) service and stores data in a Microsoft SQL Server 2008 database.
The WCF service will be accessed by external applications that do not use the .NET Framework.
You need to recommend an approach for passing data between layers.
What should you recommend?

A) Use custom .NET classes with binary serialization.
B) Use custom .NET classes with XML serialization.
C) Use a DataSet object.
D) Use the DiffGram XML format.

4. 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?

A) Add multiple text boxes for each data entry form.
B) Create a new merged resource dictionary and reference it from each data entry form.
C) Create a new user control and reference it on each data entry form.
D) Use the same style resource for each data entry form.

5. You are designing a Windows Presentation Foundation (WPF) application. The WPF application contains code that will be executed by both full trust callers and partial trust callers.
The WPF application code does not have the AllowPartialTrustCallers attribute set.
You have the following requirements:
- The application security settings must allow partial trust callers to create and write
to a file.
- Users must have access only to files that they create and not to files created by other users.
You need to recommend a location for storing each user's files.
Which location should you recommend?

A) The user's IsolatedStorage folder
B) The user's Roaming folder
C) The user's My Documents folder
D) The user's LocalSettings folder

Solutions: