Microsoft 70-518 Exam : 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 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) Secure the Web service by using SSL.
B) Implement data validation at the service layer and reject invalid datA.
C) Implement data validation on the client and reject invalid datA.
D) Encrypt data while storing it in the database.

2. You are designing a Windows Presentation Foundation (WPF) application.
You have the following requirements:
- Run client-side validation tests on a large result set from a Microsoft SQL Server 2008 database. - Validate each row of data without storing the entire result set in memory.
You need to recommend a data access technology.
What should you recommend?

A) LINQ to SQL using the ElementAt() method
B) LINQ to Entities using the ElementAt() method
C) ADO.NET using SqIDataAdapter objects and DataSet objects
D) ADO.NET using SqIDataReader objects

3. You are designing a Windows Presentation Foundation (WPF) application by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
During testing of the application, you identify several bottlenecks by using Windows Task Manager and Windows Performance Monitor.
You need to recommend a system test strategy that will meet the following requirements:
- Identify major application workloads.
- Identify the functions of the application that are most impacted.
Which testing strategy should you recommend?

A) Security testing
B) Scalability testing
C) Stability testing
D) Usability testing

4. You are designing a .NET Framework 4 solution that contains a Windows Presentation Foundation (WPF) application and a Windows Communication Framework (WCF) Web service. The WPF application will be deployed to users' desktops located in the company's corporate network. The WCF Web service will be deployed to a Web farm located in the company's perimeter network. The firewall between the perimeter network and the Internet allows only HTTP and HTTPStraffic.
You need to recommend an approach for minimizing the attack surface of the WCF Web service.
What should you recommend?

A) Configure a WCF endpoint to use the basicHttpBinding binding.
B) Configure a WCF endpoint to use the NetTcpBinding binding.
C) Set up an SSL certificate on the server.
D) Add a load-balancing router to the Web farm configuration.

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

Solutions: