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

1. You are designing an n-tier .NET Framework 4 solution that includes a Windows Presentation Foundation (WPF) application. The WPF application will access data stored in a Microsoft SQL Server 2008 database by using the solution's data access tier.
The data access tier must also be available from within Microsoft Excel 2010.
You need to recommend a technology for accessing the data access tier.
Which technology should you recommend?

A) ADO.NET Entity Framework 4
B) WCF Data Services
C) LINQ to SQL
D) LINQ to XML

2. ---
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 transactional 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 merge replication.
D) Write error messages to the event logs on the local computers. Use Windows Management Instrumentation (WMI) to view the error information.

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

4. You are designing a Windows Presentation Foundation (WPF) application.
The WPF application must run against either Microsoft SQL Server 2008 or a third-party
database system without duplicating data access logiC.
You need to recommend a data access technology.
What should you recommend?

A) ADO.NET using DataSet objects and SqIDataAdapter objects
B) LINQ to SQL
C) LINQ to Entities
D) ADO.NET using DataSet objects and SqlDataReader objects

5. 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 operationsdata.
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.

Solutions: