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

1. 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?

A) Implement the IDataErrorlnfo interface in the data class of the application.
B) Subscribe to the MouseLeave event for all user interface (UI) components of the application.
Perform data validation in the event handler and alert users when a data entry error occurs.
C) Implement the INotifyPropertyChanged interface in the data class of the application.
D) Subscribe to the TextChanged event for all user interface (UI) components of the application.
Perform data validation in the event handler and alert users when a data entry error occurs.

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

3. 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?

A) Embed the Excel 2010 COM library.
B) Include the primary interop assembly for Excel 2010.
C) Include the primary interop assembly for Excel 2007.
D) Embed the type information from the Excel 2010 COM library.

4. You are developing a Windows application by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
The application will consume a Windows Communication Foundation (WCF) service. The WCF service will provide data to the application. You plan to use the ADO.NET Entity Framework to create a data model that will be used by the application.
Another development team makes changes to the WCF service data contract.
You need to ensure that changes made to the WCF service data contract do not require the application to be recompiled.
What should you do?

A) Create a conceptual model and a storage model based on the existing version of the WCF service.
B) Create a storage model based on the business model. Use a class generated from the storage model for programming,
C) Create a storage model based on the schema of the existing WCF service. Update the mapping file when the new version of the WCF service is available.
D) Create a conceptual model based on the business model. Use a class generated from the conceptual model for programming. Update the mapping file when the new version of the WCF service is available.

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

Solutions: