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

1. 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) AnElementHost control
D) A Canvas control

2. 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?

A) Buffer overflow testing
B) Stress testing
C) Component stress testing
D) Integration testing

3. You are designing an n-tier .NET Framework 4 solution that includes a Windows Presentation Foundation (WPF) application. The WPF application will access data stored in a Microsoft SQL Server 2008 database by using the solution's data access tier.
The data access tier must also be available from within Microsoft Excel 2010.
You need to recommend a technology for accessing the data access tier.
Which technology should you recommend?

A) LINQ to SQL
B) WCF Data Services
C) LINQ to XML
D) ADO.NET Entity Framework 4

4. 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?

A) Store the results of the query in a local XML file. Bind all forms to an XMLDataAdapter object that references the local XML file.
B) Design a static class for the data that implements the INotifyPropertyChanged interface. Raise the PropertyChanged event to notify the forms when data is changed.
C) Design a static class for the data that implements the IObservable interface. Subscribe to the static class from each of the forms that use the datA.
D) Store the results of the query in a static DataTable object that is used by all the forms.

5. You are designing an n-tier solution that includes a Windows Presentation Foundation (WPF) client application. The WPF application connects to a middle-tier server that runs the data access layer.
The data access layer connects to a Microsoft SQL Server 2008 database and to a mainframe-based database.
The mainframe-based database will be replaced in one year.
You have the following requirements:
---
Centrally manage all database connections.
Minimize changes to the code base when the database is replaced.
Ensure that the WPF application will not need to be redeployed when the database
is replaced.
You need to recommend an approach for designing the data access layer.
What should you recommend?

A) Create a data access layer class that uses a database factory class to access all databases. Add the connection string information for the databases to the configuration file for the data access layer class.
B) Add the connection string information for the databases to the configuration file for the WPF application. Implement a database factory class from within the WPF application.
C) Create a data access layer class that uses a database factory class to access all databases. Add the connection string information for the databases to the configuration file for the WPF application.
D) Add the connection string information for the databases to the configuration file for the WPF application. Implement one class in the WPF application for each data source.

Solutions: