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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 WPF application will be deployed to 5,000 users worldwide.
You need to recommend an approach for identifying problems that users will experience.
Which testing methodology should you recommend?

A) Usability testing
B) Acceptance testing
C) Integration testing
D) Functional testing

2. You are designing a Windows Presentation Foundation (WPF) application.
The WPF application contains code that will be executed by both full trust callers and
partial trust callers.
The WPF application code does not have the AllowPartialTrustCallers attribute set.
You have the following requirements:
- The application security settings must allow partial trust callers to create and write to a file. - Users must have access only to files that they create and not to files created by other users.
You need to recommend a location for storing each user's files.
Which location should you recommend?

A) The user's My Documents folder
B) The user's IsolatedStorage folder
C) The user's Roaming folder
D) The user's LocalSettings folder

3. 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) Create a common assembly on the WCF tier of the new application to interface with the COM components.
B) 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.
C) Use .NET COM Interop on the client tier to interact directly with the COM components until they are replaced by the managed code.
D) Create a common assembly on the UI tier of the new application to interface with the COM components.

4. You are designing a Windows Presentation Foundation (WPF) application.
The WPF application must run against either Microsoft SQL Server 2008 or a third-party
database system without duplicating data access logiC.
You need to recommend a data access technology.
What should you recommend?

A) ADO.NET using DataSet objects and SqlDataReader objects
B) LINQ to SQL
C) LINQ to Entities
D) ADO.NET using DataSet objects and SqIDataAdapter objects

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

Solutions: