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

1. ---
You are designing a .NET Framework 4 solution. The solution contains a Windows Presentation Foundation (WPF) application and a Windows Communication Foundation (WCF) Web service.
The WPF application uses the WCF Web service to store data in a Microsoft SQL Server 2008 database.
You have the following requirements:
Ensure that the WPF application functions while users' computers are offline.
Minimize the time spent sending data to the WCF Web service.
Minimize disk space requirements for data storage.
You need to recommend an approach for synchronizing data between the WPF application and the database.
Which two actions should you recommend? (Each correct answer presents part of the solution. Choose two.)

A) Store data in DataSet objects. Serialize data locally by using XML serialization.
B) Store data in custom business objects. Serialize data locally by using custom serialization.
C) Create a local caching solution that periodically checks for Internet connectivity and writes directly to the local data store and to the WCF Web service.
D) Create a local caching solution that periodically checks for Internet connectivity, uses local memory, and batches changes to the WCF Web service.

2. You are designing a Windows Presentation Foundation (WPF) application that accesses a business tier. The business tier is implemented as a Windows Communication Foundation (WCF) service and stores data in a Microsoft SQL Server 2008 database.
The WCF service will be accessed by external applications that do not use the .NET Framework.
You need to recommend an approach for passing data between layers.
What should you recommend?

A) Use custom .NET classes with XML serialization.
B) Use the DiffGram XML format.
C) Use a DataSet object.
D) Use custom .NET classes with binary serialization.

3. ----
You are designing a Windows Presentation Foundation (WPF) application by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
You need to ensure that the following requirements are met:
All UI elements are labeled.
All property values are exposed.
Keyboard navigation contains tab stops for all controls.
The application functions on high contrast displays.
Which testing strategy should you recommend?

A) Stability testing
B) Accessibility testing
C) Usability testing
D) Stress testing

4. You are designing a Windows Presentation Foundation (WPF) client application that requests reports from a Windows Communication Foundation (WCF) Web service.
Users must be able to perform other tasks while the WCF Web service generates the report.
You need to recommend a message exchange pattern for the communication between the WPF application and the WCF Web service.
What are two possible message exchange patterns that will meet the requirements? (Each correct answer presents a complete solution. Choose two.)

A) Datagram without session
B) Datagram with session
C) Request-Response
D) Duplex

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

Solutions: