Microsoft 70-518 : PRO: Design & Develop Wndws Apps Using MS .NET Framework 4

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

1. You are analyzing an application that uses Microsoft .NET Framework 4 and Microsoft SQL Server 2008.
The application is used to maintain an inventory database and is accessed from several remote Windows client applications. The application frequently updates multiple rows in a database table by using a DbDataAdapter object.
Users report that the application runs slowly during peak business hours.
When large number of records are changed by multiple users, you discover the following:
The CPU utilization of the client applications is normal.
The network utilization increases slightly.
The CPU utilization of the database server remains close to the normal average
for a day.
You need to resolve the performance issue.
What should you do?

A) Move the update method calls to a separate BackgroundWorker thread.
B) Remove any limit on batch update sizes. Modify the client application to perform a single update.
C) Disable batch updates. Modify the client application to perform a single update.
D) Insert a random time interval between updates.

2. You design a Windows Presentation Foundation (WPF) application that connects to a Microsoft SQL Server 2008 database.
The WPF application becomes unresponsive at times. When the WPF application is running, physical memory usage is between 90 percent and 95 percent.
You need to recommend a tool that will identify the memory usage characteristics of the WPF application.
Which tool should you recommend?

A) Event Tracing for Windows (ETW)
B) Application Center Test (ACT)
C) CLR Profiler
D) SQL Profiler

3. You are designing a distributed Windows Presentation Foundation (WPF) application.
You have the following requirements: - Ensure that all errors are logged in a central location.
- Ensure that the WPF application logs related errors within a single transaction - Secure error information during transmission.
You need to recommend a strategy for collecting error information.
What should you recommend?

A) Write the information to the Windows Application log on each client system. Use Windows Error Reporting to collect the results.
B) Create a Windows Communication Foundation (WCF) service. Use the wsHttpBinding protocol to transport the information.
C) Write the information to the Windows Application log on each client system. Use Windows Management Instrumentation (WMI) to collect the results.
D) Create a Windows Communication Foundation (WCF) service. Use the basicHttpBinding protocol to transport the information.

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

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

Solutions: