Microsoft 70-518 Online Practice Questions and Exam Preparation

Microsoft 70-518 Online Questions & Answers

• Question 51:

  You are designing an n-tier solution for use by multiple groups of users. The solution consists of a client application that collects information from users and transmits it to a business layer for processing. The business layer sends the

  information to a service layer by using Windows Communication Foundation (WCF). The service layer exists on multiple servers.

  The solution must send the collected information to a specific server in the service layer based on the user's group.

  You need to recommend an approach that will allow the information to be sent to the correct server.

  What should you recommend?

  A. Impersonate the client in the business layer.
  B. Implement a duplex contract on the service layer.
  C. Create a Windows Workflow Foundation (WF) activity on the client.
  D. Implement the WCF 4 Routing Service.
  D. Implement the WCF 4 Routing Service.

• Question 52:

  You are creating 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 WCF service that contains a single operation to upload large binary data files. You configure the binding of the WCF service to enable data streaming.

  You need to ensure that the WCF service operation receives binary data files along with a string parameter that contains the description of each file.

  You create a service operation that receives a single parameter. What should you do next?

  A. Implement the service parameter as a Serializable class that contains a property for the description of the file and another property for the content of the data file
  B. Implement the service parameter as a DataContract class that contains a DataMember property for the description of the file and another DataMember property for the content of the data file.
  C. Implement the service parameter as a MessageContract class that contains a MessageHeader property for the description of the file and a MessageBodyMember property for the content of the data file.
  D. Implement the service parameter as a MessageContract class that contains a MessageBodyMember property for the description of the file and another MessageBodyMember property for the content of the data file.
  C. Implement the service parameter as a MessageContract class that contains a MessageHeader property for the description of the file and a MessageBodyMember property for the content of the data file.

• Question 53:

  You are creating 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).

  The application must provide maximum availability. It must be able to run in a reliable manner even when network connectivity is not available.

  You need to design the WCF service interaction for the business layer of the application.

  What should you do?

  A. Create a WCF queued service.
  B. Create a WCF proxy class that uses synchronous operations.
  C. Create a WCF proxy class that uses asynchronous operations.
  D. Create a WCF service that uses the Ws2007HttpBinding binding.
  A. Create a WCF queued service.

• Question 54:

  You are designing an application by using Windows Presentation Foundation (WPF) and Microsoft .NET Framework 4. You plan to create a wizard by using a Window, a Frame, and several Page objects.

  The wizard will use the NavigationService. The NavigationService will be invoked by buttons on the user interface (UI). You need to ensure that prior-page navigation can be disabled. What should you do?

  A. In the button Onclick event, remove the previous wizard page from the journal.
  B. In the button Onclick event, remove the previous wizard page from the Window.
  C. In the button OnMouseDown event, remove the previous wizard page from the Frame.
  D. In the button OnMouseDown event, remove the previous wizard page from the Window.
  A. In the button Onclick event, remove the previous wizard page from the journal.

• Question 55:

  You are designing updates to an existing Windows Presentation Foundation (WPF) application that connects to a Microsoft SQL Server 2008 database. The application updates will require updates to the database.

  You have the following requirements:

  Prevent data loss.

  Recover the database if the database update fails.

  You need to recommend a database deployment strategy.

  Which two actions should you recommend? (Each correct answer presents part of the solution.Choose two.)

  A. Place the database in single-user mode before deploying the changes.
  B. Specify the simple recovery model for the database.
  C. Specify the full recovery model for the database.
  D. Place the database in restricted user mode before deploying the changes.
  A. Place the database in single-user mode before deploying the changes.
  C. Specify the full recovery model for the database.

• Question 56:

  You are designing a Windows Presentation Foundation (WPF) application by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.

  During testing of the application, you identify several bottlenecks by using Windows Task Manager and Windows Performance Monitor.

  You need to recommend a system test strategy that will meet the following requirements:

  Identify major application workloads.

  Identify the functions of the application that are most impacted.

  Which testing strategy should you recommend?

  A. Usability testing
  B. Security testing
  C. Stability testing
  D. Scalability testing
  D. Scalability testing

• Question 57:

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

• Question 58:

  You are designing a Windows Presentation Foundation (WPF) client application from which employees will access a Web service.

  Business partners will access the Web service by using proprietary client applications.

  You need to recommend a solution for ensuring the integrity of data in the system.

  What should you recommend?

  A. Secure the Web service by using SSL.
  B. Implement data validation at the service layer and reject invalid data.
  C. Implement data validation on the client and reject invalid data.
  D. Encrypt data while storing it in the database.
  B. Implement data validation at the service layer and reject invalid data.

• Question 59:

  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.
  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.

• Question 60:

  You are creating a Windows Presentation Foundation (WPF) application by using Microsoft .NET Framework 4.

  You create a photo album-browsing application. When the user opens an album, pictures in the album are displayed in sets of 10. Pictures are obtained from a Windows Communication Foundation (WCF) service. Most of the memory of the application is allocated in the native heap. The memory usage of the application increases when new albums are opened.

  You need to ensure that the memory usage of the application remains within a specific range. What should you do?

  A. Use a reduced color palette to render pictures.
  B. Use the NetTcpBinding binding to communicate with the WCF service.
  C. Load the pictures from the WCF service on a background thread. Implement the IDisposable interface.
  D. Assign the null value to every variable pointing to a picture that is not displayed. Implement the IDisposable interface.
  D. Assign the null value to every variable pointing to a picture that is not displayed. Implement the IDisposable interface.