70-518 무료 덤프문제 온라인 액세스

You are designing an application by using Windows Presentation Foundation (WPF) and Microsoft .NET Framework 4.
The application retrieves customer data from an enterprise resource planning (ERP) system.
You need to ensure that the following requirements are met: - Customer data is retrieved only once.
- Customer data is available on multiple forms within the application.
- Forms can implement Two-Way binding to the customer datA.
What should you do?

• A.Store the results of the query in a local XML file. Bind all forms to an XMLDataAdapter object that references the local XML file.
• B.Design a static class for the data that implements the IObservable interface. Subscribe to the static class from each of the forms that use the datA.
• C.Store the results of the query in a static DataTable object that is used by all the forms.
• D.Design a static class for the data that implements the INotifyPropertyChanged interface. Raise the PropertyChanged event to notify the forms when data is changed.

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

You are designing an application by using Windows Presentation Foundation (WPF) and Microsoft .NET Framework 4.
The application retrieves customer data from an enterprise resource planning (ERP) system.
You need to ensure that the following requirements are met:
---
Customer data is retrieved only once.
Customer data is available on multiple forms within the application.
Forms can implement Two-Way binding to the customer datA.
What should you do?

• A.Store the results of the query in a local XML file. Bind all forms to an XMLDataAdapter object that references the local XML file.
• B.Design a static class for the data that implements the IObservable interface. Subscribe to the static class from each of the forms that use the datA.
• C.Store the results of the query in a static Data Table object that is used by all the forms.
• D.Design a static class for the data that implements the INotifyPropertyChanged interface. Raise the PropertyChanged event to notify the forms when data is changed.

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 required subset of the COM component functionality.
• 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 entire functionality of the COM component.

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