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

1. You are designing an n-tier Windows application by using Microsoft .NET Framework 4, Microsoft Visual Studio 2010, and Microsoft SQL Server 2008.
The application will replace an existing client/server application. The existing application was created by using Microsoft Visual Basic 6.0 and consists of a series of COM components that access a SQL Server database.
You plan to move the existing COM components into a Windows Communication Foundation (WCF) tier.
You need to ensure that the COM components can be replaced without impacting the existing user interface (UI) tier.
You also need to ensure that the COM components can be replaced separately.
What should you do?

A) Convert the Visual Basic 6.0 source code to managed code by using the Visual Studio converters. Use these code components on the client/server application until they are replaced individually with the new permanent managed code functionality.
B) Create a common assembly on the UI tier of the new application to interface with the COM components.
C) Create a common assembly on the WCF tier of the new application to interface with the COM components.
D) Use .NET COM Interop on the client tier to interact directly with the COM components until they are replaced by the managed code.

2. You are designing an n-tier solution that connects to a Microsoft SQL Server 2008 database.
You plan to deploy the database to development machines and to a staging database server from within Microsoft Visual Studio 2010. You plan to set up separate build configurations for development and staging. You also plan to deploy to multiple production database servers managed by an outside vendor.
You must not allow the outside vendor to access the Visual Studio projects.
You need to recommend an approach for configuring and deploying the production database servers.
Which two actions should you recommend? (Each correct answer presents part of the solution. Choose two.)

A) Use VSDBCMD to deploy the production databases.
B) Use a SQL Server 2008 Database Project.
C) Use a Visual Basic SQL CLR Database Project.
D) Use SQL Server 2008 Management Studio to deploy the production databases.

3. You are designing a .NET Framework 4 solution that includes a Windows Presentation Foundation (WPF) application. The WPF application connects to a Microsoft SQL Server 2008 database. You plan to deploy the WPF application to millions of client computers. The SQL Server database will be hosted in a data center.
The WPF application will query the database to provide type-ahead assistance as users enterdata.The WPF application will send a query after each character is entered. Each query will access multiple joined tables.
You need to recommend an approach for maximizing scalability of the solution.
What should you recommend?

A) Create a separate data layer with caching.
B) Create stored procedures to abstract the tables.
C) Denormalize the data to fewer tables.
D) Use System.Runtime.Caching to cache query results on the client.

4. You are designing a Windows Presentation Foundation (WPF) application that uses .NET Framework 4. The application uses a subset of the functionality provided by a third-party COM component that will be replaced later.
The application developers must have access to only the required subset of functionality.
You need to recommend a solution that meets the requirements.
Which two actions should you recommend? (Each correct answer presents part of the solution. Choose two.)

A) In the adapter assembly, use an embedded interop reference.
B) Create an adapter assembly that exposes the required subset of the COM component functionality.
C) In the adapter assembly, use a standard interop reference.
D) Create an adapter assembly that exposes the entire functionality of the COM component.

5. You are designing a Windows Forms application that allows users to search a product catalog and place orders.
You have the following requirements:
- Display a progress indicator while the application is searching the catalog. - Ensure that users can cancel search operations.
You need to recommend an approach that meets the requirements.
What should you recommend?

A) Use a BackgroundWorker component to perform the search.
B) Implement the search as a Windows Communication Foundation (WCF) service by using the AsyncPattern property of the OperationContractattribute.
C) Execute the search on the user interface thread. Provide a Cancel button to cancel the search.
D) Implement the search as a duplex service.

Solutions: