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

1. You are upgrading a stand-alone Windows Presentation Foundation (WPF) application and an XAML browser application (XBAP) to Microsoft .NET Framework 4.
You plan to add .NET 4 types and members to both applications.
Both applications consume a common utility assembly that modifies files on a local file system. The utility assembly requires full trust.
You need to ensure that both applications can use the common utility assembly without any security-related exceptions.
What should you do?

A) Change the <supportedRuntime> element for the WPF application to the .NET Framework 3.5.
B) Apply the AllowPartiallyTrustedCallersAttribute attribute to the XBAP application.
C) Apply the AllowPartiallyTrustedCallersAttribute attribute to the utility assembly.
D) Change the <supportedRuntime> element for the XBAP application to the .NET Framework 3.5.

2. ---
You are designing updates to a Windows solution that processes complex scientific datA.The solution extracts analyzed data from Microsoft Excel by using an application-level add-in.
You have the following requirements:
Deploy the Excel add-in to client machines with the application.
Ensure that the solution supports Excel 2007 and Excel 2010.
Minimize the size of the deployment package.
You need to recommend an approach that meets the requirements.
What should you recommend?

A) Include the primary interop assembly for Excel 2007.
B) Embed the Excel 2010 COM library.
C) Embed the type information from the Excel 2010 COM library.
D) Include the primary interop assembly for Excel 2010.

3. You are designing a Windows application by using Microsoft .NET Framework 4.
Remote users have limited network connectivity. Users will not have write permissions to
the local file system.
You plan to design the error logging strategy for the application.
You need to ensure that the application can collect error information. You also need to ensure that the errors can be analyzed from a centralized location.
What should you do?

A) Log the errors to a Web service.
B) Log the errors to the Windows System event log.
C) Use a local log file.
D) Use the Microsoft Sync Framework.

4. You are modifying an existing Windows Presentation Foundation (WPF) application that uses .NET Framework 4. The WPF application uses a wizard to capture data and insert the data into a database. The database includes one parent table and many child tables.
Inserting captured data in the database locks many database tables and delays application access.
You have the following requirements:
Reduce delays when saving datA.
Ensure that other application users are not blocked from reading datA.
Ensure that captured data is available only after all child tables are updated.
You need to recommend an approach for inserting captured data into the database.
---
What should you recommend?

A) Insert all captured data in a single transaction when the user completes the wizard.
B) Insert captured data by using optimistic concurrency as the user completes each wizard page.
C) Insert captured data by using non-transactional operations when the user completes the wizard.
D) Insert captured data by using a single transaction as the user completes each wizard page.

5. You are designing a Windows application by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
The business logic layer of the application is implemented by using Windows Communication Foundation (WCF).
You create a duplex bidirectional WCF service that contains a single operation. The service operation sends the result back to the client application by using a two-way callback operation.
You plan to design a service interaction strategy.
You need to ensure that deadlocks are prevented.
What should you do?

A) Configure the ServiceBehaviorAttribute attribute to use the Synchronization context in the service class.
B) Configure the CallbackBehaviorAttribute attribute to use the Synchronization context in the callback class.
C) Configure the CallbackBehaviorAttribute attribute to use the Reentrant or Multiple concurrency mode in the callback class.
D) Configure the ServiceBehaviorAttribute attribute to use the Reentrant or Multiple concurrency mode in the service class.

Solutions: