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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 that contains a Windows Presentation Foundation (WPF) application and a Windows Communication Framework (WCF) Web service.
The WPF application will be deployed to users1 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 HTTPS traffiC.
You need to recommend an approach for minimizing the attack surface of the WCF Web service.
What should you recommend?

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

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

3. You are developing a Windows application by using Microsoft .NET Framework 4, Microsoft Visual Studio 2010, and Microsoft SQL Server 2008.
New features that require changes to be made to the database schema are added to the application every week.
You need to ensure that the changes made to the database schema do not require the application to be recompiled.
Which two actions should you perform? (Each correct answer presents part of the solution.
Choose two.)

A) Build a conceptual model and use it to access data from the business entities.
B) Modify the xml mapping file when the schema changes occur.
C) Modify the conceptual schema xml file when the schema changes occur.
D) Build a storage model and use it to access data from the business entities.

4. You are designing a Windows Presentation Foundation (WPF) application that will be used to display real-time data from a Microsoft SQL Server 2008 database.
You need to recommend an approach for displaying the datA.
Which two actions should you recommend? (Each correct answer presents part of the solution. Choose two.)

A) Implement OneWayToSource binding between the controls in the WPF application and objects in the data layer.
B) Use a SqlCacheDependency object in the data layer to query the database when a change is detected.
C) Implement OneWay binding between the controls in the WPF application and objects in the data layer.
D) Use a System.Runtime.Caching object in the data layer with a sliding expiration, and query the database when the Cache object expires.

5. You are designing a Windows Presentation Foundation (WPF) application for your company by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
The business layer of the application is implemented by using Windows Communication Foundation (WCF).
You plan to support non-repudiation and data integrity for WCF messages.
You need to design the security strategy for the application.
What should you do?

A) Attach a digital signature to the WCF messages.
B) Encrypt the WCF messages by using the Secure Sockets Layer (SSL) protocol.
C) Encrypt the WCF messages by using the Internet Protocol Security (IPSec) protocol.
D) Implement message-level security by using digital certificates as client computer credentials.

Solutions: