Microsoft 070-518 : PRO: Design & Develop Wndws Apps Using MS .NET Framework 4

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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) and
Microsoft .NET Framework 4.
The user interface (UI) tier of the application will be implemented in WPF.
The middle tier of the application is implemented by using an existing COM component.
The middle tier contains a long-running method named ProcessDatA.
You need to ensure that users can continue to use the UI while ProcessData is running.
What should you do?

A) Call the Run method of the Dispatcher class before invoking ProcessDat
B) Use the Invoke method of the Dispatcher class to call ProcessDatA.
C) Call the DoEvents method of the Application class before invoking ProcessDatA.
D) Use an asynchronous worker thread to call ProcessDatA.

2. You are designing a sales and inventory tracking system by using Microsoft Visual Studio 2010 and Microsoft SQL Server 2008.
The sales, inventory, and shipping tables will reside in different databases on different database servers.
You need to ensure that the tables are updated simultaneously.
What should you do?

A) Use Distributed transactions.
B) Use LINQ to SQL.
C) Use the ADO.NET Entity Framework.
D) Use Microsoft Sync Framework.

3. You are designing an application by using Windows Presentation Foundation (WPF) and Microsoft .NET Framework 4.
The application will run on Windows 7-based kiosks that are located indoors and outdoors. The kiosk displays have a photo sensor that will update the application with the current ambient luminosity.
You need to ensure that the user interface (UI) of the application dynamically changes the application theme based on the ambient luminosity.
What should you use?

A) A RenderTransform control applied to the root canvas
B) An attached behavior to change a merged resource dictionary
C) A visual state manager to add VisualStateGroup objects
D) A VisualBrush control to paint the UI

4. You are designing an n-tier Windows solution that includes a data entry application. The solution uses Microsoft .NET Framework 4 and Microsoft SQL Server 2008.
The data entry application sends customer orders to a middle-tier server. The middle-tier server sends orders to a set of services that perform operations on the orders. Business rules determine which services to call and whether to run them in sequence or in parallel. The business rules are complex and data dependent.
The Windows solution must meet the following requirements:
- Optimize application performance by using dynamic load balancing. - Allow for business rules to be changed at runtime.
You need to recommend an approach that meets the requirements.
What should you recommend?

A) A routed service that uses Windows Communication Foundation (WCF) messaging
B) SQL Server stored procedures
C) Private message queues with a controller class on the middle-tier server
D) A Windows Communication Foundation (WCF) service for each operation, with a controller class on the middle-tier server

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 UI thread.
Batch the database updates by setting the DbDataAdapter.UpdateBatchSize property to 2.
B) 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.
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: