Microsoft MCPD 070-518

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Microsoft PRO: Design & Develop Wndws Apps Using MS .NET Framework 4 認定 070-518 試験問題:

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You are designing a .NET Framework 4 solution. The solution contains a Windows Presentation Foundation (WPF) application and a Windows Communication Foundation (WCF) Web service.
The WPF application uses the WCF Web service to store data in a Microsoft SQL Server 2008 database.
You have the following requirements:
Ensure that the WPF application functions while users' computers are offline.
Minimize the time spent sending data to the WCF Web service.
Minimize disk space requirements for data storage.
You need to recommend an approach for synchronizing data between the WPF application and the database.
Which two actions should you recommend? (Each correct answer presents part of the solution. Choose two.)

A) Create a local caching solution that periodically checks for Internet connectivity, uses local memory, and batches changes to the WCF Web service.
B) Store data in DataSet objects. Serialize data locally by using XML serialization.
C) Store data in custom business objects. Serialize data locally by using custom serialization.
D) Create a local caching solution that periodically checks for Internet connectivity and writes directly to the local data store and to the WCF Web service.

2. You are designing a Windows Presentation Foundation (WPF) application for your company by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
The business layer of the application is implemented by using Windows Communication Foundation (WCF).
You plan to support non-repudiation and data integrity for WCF messages.
You need to design the security strategy for the application.
What should you do?

A) Encrypt the WCF messages by using the Internet Protocol Security (IPSec) protocol.
B) Implement message-level security by using digital certificates as client computer credentials.
C) Encrypt the WCF messages by using the Secure Sockets Layer (SSL) protocol.
D) Attach a digital signature to the WCF messages.

3. You are designing a Windows Presentation Foundation (WPF) data entry application. The application uses data binding to bind controls in the user interface (UI) to business objects. The UI uses validation rules for each input control.
The data validation rules change based on the state of the business object.
You need to recommend a validation strategy that will allow changes to the validation rules without changes to the UI code.
What should you recommend?

A) Implement the IDataErrorInfo interface in the business objects and replace all ValidationRule elements with Exception ValidationRule elements.
B) Set the ValidationStep attribute on ValidationRule elements to RawProposedValue.
C) Set the ValidationStep attribute on ValidationRule elements to CommittedValue.
D) Implement the IDataErrorInfo interface in the business objects and replace all
ValidationRule elements with Data ErrorValidat ion Rule elements.

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

5. You are designing a Windows Presentation Foundation (WPF) application. The WPF application displays indicators to compare your company's past performance to the current day's operationsdata.
The WPF application accesses historic data from your company's data warehouse through a Web service, and accesses current data directly from a Microsoft SQL Server 2008 database.
The WPF application must meet the following requirements:
- Retrieve historic data from the data warehouse at application startup and then once per day.
- Retrieve current data from the database every five minutes, and then update the
indicators.
- Cache all retrieveddata.
- Target the .NET Framework 4 Client Profile.
You need to recommend an approach to data caching.
What should you recommend?

A) UseSystem.Web.Caching with an absolute expiration.
B) UseSystem.Web.Caching with a sliding expiration.
C) Use System.Runtime.Caching with a sliding expiration.
D) Use System.Runtime.Caching with an absolute expiration.

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