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

2. You are designing a Windows application by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
You plan to implement control caching to improve the loading time of a control. It is not required to refresh the content of the control after the application loads.
The application will be compiled by using the .NET 4 client profile.
You need to ensure that the following requirements are met:
--
The control is reusable in multiple forms.
Data in the control is cached when the application is loaded.
What should you do?

A) In the constructor of the application window, add code to load the control. Save the control to the cache by using objects in the System.WeCaching namespace.
B) In the constructor of the application window, add code to load the control. Save the control to a static variable.
C) In the Load event of the application window, add code to load the control. Save the control to an instance variable.
D) In the Load event of the application window, add code to load the control. Save the control to the cache by using objects in the System.WeB.Caching namespace.

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

4. 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) Encrypt data while storing it in the database.
D) Implement data validation on the client and reject invalid datA.

5. You are designing an application by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
You plan to design an instrumentation strategy for the application.
You need to ensure that the strategy meets the following requirements:
- Captures detailed performance information. - Enables or disables diagnostic messages by using an application configuration option without requiring the application to restart.
What should you design?

A) An override to the Debug class
B) A custom performance counter
C) A custom trace listener
D) An override to the EventLog class

Solutions: