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

1. You are developing a Windows Presentation Foundation (WPF) application by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
The application will run in a partially trusted sandbox.
You plan to deploy the application on client computers by using the ClickOnce deployment technology. You plan to sign the deployment and application manifest by using a trusted publisher certificate.
You need to ensure that the following requirements are met:
- Users are not prompted for elevated permissions during application deployment.
- The application can request elevated permissions at runtime.
Where should you install the trusted publisher certificate?

A) In the trusted publisher store on the deployment server
B) In the trusted root store on the deployment server
C) In the trusted root store on each client computer
D) In the trusted publisher store on each client computer

2. You are designing an n-tier Windows application by using Microsoft .NET Framework 4, Microsoft Visual Studio 2010, and Microsoft SQL Server 2008.
The application will replace an existing client/server application. The existing application was created by using Microsoft Visual Basic 6.0 and consists of a series of COM components that access a SQL Server database.
You plan to move the existing COM components into a Windows Communication Foundation (WCF) tier.
You need to ensure that the COM components can be replaced without impacting the existing user interface (UI) tier. You also need to ensure that the COM components can be replaced separately.
What should you do?

A) Create a common assembly on the WCF tier of the new application to interface with the COM components.
B) Use .NET COM Interop on the client tier to interact directly with the COM components until they are replaced by the managed code.
C) Create a common assembly on the UI tier of the new application to interface with the COM components.
D) Convert the Visual Basic 6.0 source code to managed code by using the Visual Studio converters. Use these code components on the client/server application until they are replaced individually with the new permanent managed code functionality.

3. You are designing a Windows Presentation Foundation (WPF) client application from which
employees will access a Web service.
Business partners will access the Web service by using proprietary client applications.
You need to recommend a solution for ensuring the integrity of data in the system.
What should you recommend?

A) Encrypt data while storing it in the database.
B) Secure the Web service by using SSL.
C) Implement data validation on the client and reject invalid datA.
D) Implement data validation at the service layer and reject invalid datA.

4. You are designing a Windows Forms application. The application connects to a Microsoft SQL Server 2008 database.
You need to recommend an approach for retrieving and logging all informational messages and error messages reported by the database.
What should you recommend?

A) Retrieve informational messages by creating a handler for the InfoMessage event. Retrieve error messages in a SqlException object.
B) Retrieve informational messages and error messages by creating a handler for the InfoMessage event.
C) Retrieve informational messages and error messages in a SqlException object.
D) Retrieve informational messages in a SqlException object. Retrieve error messages by creating a handler for the InfoMessage event.

5. You are designing a Windows Presentation Foundation (WPF) application. The WPF application displays indicators to compare your company's past performance to the current day's operations datA.
The WPF application accesses historic data from your company's data warehouse through a Web service, and accesses current data directly from a Microsoft SQL Server 2008 database.
The WPF application must meet the following requirements:
- Retrieve historic data from the data warehouse at application startup and then
once per day.
- Retrieve current data from the database every five minutes, and then update the
indicators.
- Cache all retrieveddata.
- Target the .NET Framework 4 Client Profile.
You need to recommend an approach to data caching.
What should you recommend?

A) UseSystem.Web.Caching with an absolute expiration.
B) UseSystem.Web.Caching with a sliding expiration.
C) Use System.Runtime.Caching with a sliding expiration.
D) Use System.Runtime.Caching with an absolute expiration.

Solutions: