When Windows Azure initializes the worker role instance.
When the worker role instance receives its first request.
When the worker role instance instantiates the WCF service.
When the worker role instance enters the main execution thread.
第1题：
You are creating an application that consumes a Windows Communication Foundation (WCF) service. The service implements the IService contract. The client application contains the CallbackHandler class, which implements IServiceCallback.You need to ensure that a client proxy is created that can communicate with the service over a duplex channel.Which code segment should you use?（）
A.
B.
C.
D.
第2题：
Windows Communication Foundation (WCF) service is self-hosted in a console application. The service implements the lTimeService service interface in the TimeService class.You need to configure the service endpoint for HTTP communication. How should you define the service and endpoint tags?（）
A.
B.
C.
D.
第3题：
You are developing a Windows Service. The Windows Service will host a Windows Communication Foundation (WCF) service.The Windows Service class will inherit from ServiceBase.You need to ensure that the WCF service starts when the Windows Service is restarted.What should you do in the Windows Service class?（）
A.
B.
C.
D.
第4题：
You are planning to migrate an existing web application to Windows Azure. The application consists of an ASP.NET web application and a set of native Win32 Windows Services that provide data to the application by using named pipes. The Windows Services cannot be modified. You need to recommend a strategy for migrating the application to Windows Azure. What should you recommend？（）
第5题：
You are designing a Windows Azure application. The application will include services hosted in different geographic locations. The service locations may change. You must minimize the cost of communication between services. You need to recommend an approach for calling the services. What should you recommend？（）
第6题：
A Windows Communication Foundation (WCF) service is required to log all authorization attempts to the Windows Event Log. You need to configure a behavior and apply it to the service to support this requirement. Which behavior should you configure and apply?（）
A. service Authentication Manager
B. service Authorization
C. service Credentials
D. service Security Audit
第7题：
You are designing a Windows Azure application. The application includes processes that communicate by using Windows Communications Foundation （WCF） services. The WCF services must support streaming. You need to recommend a host for the processes and a WCF binding. Which two actions should you recommend？（）
第8题：
You are developing an application that performs file backups in the background. The background application will host a Windows Communication Foundation (WCF) service and must be active as soon as the machine is running. The background application will not have a user interface. A front-end application will consume the WCF service and will provide the user interface.You need to choose a host environment for the WCF service.Which hosting environment should you choose? （）
A. Microsoft Internet Information Services (IIS) 6.0
B. Windows Process Activation Services (WAS)
C. A Windows Forms application
D. A Windows Service
第9题：
You are designing a Windows Azure web application that does not use ASP.NET. The application requires a standalone Win32 interpreter. You need to recommend an approach for allowing access to the interpreter. What should you recommend？（）
第10题：
You are building a client for a Windows Communication Foundation (WCF) service. You need to create a proxy to consume this service. Which class should you use?（）