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

2. ---
You are designing a distributed Windows Presentation Foundation (WPF) application. You have the following requirements:
Ensure that all errors are logged in a central location.
Ensure that the WPF application logs related errors within a single transaction.
Secure error information during transmission.
You need to recommend a strategy for collecting error information.
What should you recommend?

A) Write the information to the Windows Application log on each client system. Use Windows Management Instrumentation (WMI) to collect the results.
B) Write the information to the Windows Application log on each client system. Use Windows Error Reporting to collect the results.
C) Create a Windows Communication Foundation (WCF) service. Use the wsHttpBinding protocol to transport the information.
D) Create a Windows Communication Foundation (WCF) service. Use the basicHttpBinding protocol to transport the information.

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

4. ---
You are designing a distributed application that will be deployed to 5,000 users worldwide. Servers on five continents will host the Web services and the Microsoft SQL Server 2008 databases that support the application.
You have the following requirements:
Collect information about all errors associated with the application.
Store and view all error information in a centralized location.
Minimize the network bandwidth required for the transfer of error information.
You need to recommend a strategy for reporting error information.
Which strategy should you recommend?

A) Write error messages to the SQL Server databases. Synchronize the databases by using merge replication.
B) Write error messages to the event logs on the local computers. Use Windows Error Reporting to view the error information.
C) Write error messages to the SQL Server databases. Synchronize the databases by using transactional replication.
D) Write error messages to the event logs on the local computers. Use Windows Management Instrumentation (WMI) to view the error information.

5. ---
You are analyzing a Windows client application that uses Microsoft Visual Studio 2010 and Microsoft SQL Server 2008.
The application updates two database tables from the main user interface (UI) thread.
You need to ensure that the following requirements are met:
The database tables are either updated simultaneously or not updated at all.
Users are notified of the success or failure of the updates.
Users are able to perform other tasks during the update process.
What should you do?

A) Use TransactionScope in a Using block on the main thread.
Create a BackgroundWorker thread within the block.
Move the database updates to the BackgroundWorkerDoWork method.
B) Use TransactionScope in a Using block on the UI thread.
Batch the database updates by setting the DbDataAdapter.UpdateBatchSize property to 2.
C) Use TransactionScope in a Using block on the UI thread.
Create a DependentTransaction object within the block and pass the object to the BackgroundWorkerReportProgress method.
Use the object in the ReportProgress method to create a new TransactionScope block.
D) Move the database update logic to a BackgroundWorker thread.
Ensure that the thread is enclosed in a TransactionScope Using block in the BackgroundWorkerDoWork method.

Solutions: