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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 Entities using the ElementAt() method
B) LINQ to SQL using the ElementAt() method
C) ADO.NET using SqlDataAdapter objects and DataSet objects
D) ADO.NET using SqlDataReader objects

2. You are designing a sales and inventory tracking system by using Microsoft Visual Studio 2010 and Microsoft SQL Server 2008.
The sales, inventory, and shipping tables will reside in different databases on different
database servers.
You need to ensure that the tables are updated simultaneously.
What should you do?

A) Use the ADO.NET Entity Framework.
B) Use LINQ to SQL.
C) Use Distributed transactions.
D) Use Microsoft Sync Framework.

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

4. You are developing a Windows application by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
The application will consume a Windows Communication Foundation (WCF) service. The WCF service will provide data to the application.
You plan to use the ADO.NET Entity Framework to create a data model that will be used by the application.
Another development team makes changes to the WCF service data contract.
You need to ensure that changes made to the WCF service data contract do not require the application to be recompiled.
What should you do?

A) Create a storage model based on the schema of the existing WCF service. Update the mapping file when the new version of the WCF service is available.
B) Create a conceptual model based on the business model. Use a class generated from the conceptual model for programming. Update the mapping file when the new version of the WCF service is available.
C) Create a conceptual model and a storage model based on the existing version of the WCF service.
D) Create a storage model based on the business model. Use a class generated from the storage model for programming.

5. You are designing an n-tier Windows solution that includes a data entry application. The solution uses Microsoft .NET Framework 4 and Microsoft SQL Server 2008.
The data entry application sends customer orders to a middle-tier server. The middle-tier server sends orders to a set of services that perform operations on the orders. Business rules determine which services to call and whether to run them in sequence or in parallel. The business rules are complex and data dependent.
The Windows solution must meet the following requirements:
- Optimize application performance by using dynamic load balancing.
- Allow for business rules to be changed at runtime.
You need to recommend an approach that meets the requirements.
What should you recommend?

A) A Windows Communication Foundation (WCF) service for each operation, with a controller class on the middle-tier server
B) SQL Server stored procedures
C) A routed service that uses Windows Communication Foundation (WCF) messaging
D) Private message queues with a controller class on the middle-tier server

Solutions: