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

2. You are designing a complex and critical Windows desktop application by using Microsoft
.NET Framework 4 and Microsoft Visual Studio 2010.
You plan to implement a logging strategy for the application.
You need to record all unexpected errors that occur in the application.
What should you do?

A) Subscribe to the unhandled exception event handler for the application's dispatcher on the main application thread.
Record relevant application-specific information to an external log.
B) Create a generic catch (Exception e) block in the Main method of the application.
Record relevant application-specific information to a log in the Main method.
C) Create a global WIN 32 unhandled exception filter.
Record relevant application-specific information to an external log from within the filter.
D) Subscribe to the unhandled exception event handler for the AppDomain object.
Record relevant application-specific information to an external log.

3. You are designing a Windows Presentation Foundation (WPF) application that connects to a data access layer on a server.
You have the following requirements for all security-related exceptions:
- Exceptions that occur in the data access layer must be handled in a single exception handler in the WPF application. - Exceptions must pass customized messages back to the WPF application.
You need to recommend an approach for creating new exception classes in the data access layer.
From which class should you inherit?

A) System.InvalidOperationException
B) System.AccessViolattonException
C) System.Security.SecurityException
D) System.ApplicationException

4. You are designing a Windows Presentation Foundation (WPF) application that accesses a business tier. The business tier is implemented as a Windows Communication Foundation (WCF) service and stores data in a Microsoft SQL Server 2008 database.
The WCF service will be accessed by external applications that do not use the .NET Framework.
You need to recommend an approach for passing data between layers.
What should you recommend?

A) Use a DataSet object.
B) Use custom .NET classes with XML serialization.
C) Use custom .NET classes with binary serialization.
D) Use the DiffGram XML format.

5. ---
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 merge 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 event logs on the local computers. Use Windows Management Instrumentation (WMI) to view the error information.
D) Write error messages to the SQL Server databases. Synchronize the databases by using transactional replication.

Solutions: