You are developing a Windows Communication Foundation (WCF) service that contains the following operation contract.
[OperationContract]
CustomerNames GetCustomerNames();
The operation returns customer names. You need to develop a definition for the operation contract that produces XML with the following structure.

Which code segment should you use? （）。

单项选择题You are creating a client application and configuring it to call a Windows Communication Foundation (WCF) service.When the application is deployed, it will be configured to send all messages to a WCF routing service. You need to ensure that the application can consume the target service after the application is deployed. What should you do?（）

A. In the client application, add a service reference to the router service. In the client binding configuration, specify the address of the router service.
B. In the client application, add a service reference to the target service. In the client binding configuration, specify the address of the target service.
C. In the client application, add a service reference to the router service. In the client binding configuration, specify the address of the target service.
D. In the client application, add a service reference to the target service. In the client binding configuration, specify the address of the router service.

多项选择题You develop a Windows Communication Foundation (WCF) service to generate reports. Client applications call the service to initiate report generation but do not wait for the reports to be generated. The service does not provide any status to the client applications. The service class is defined as follows. (Line numbers are included for reference only.) 01 [ServiceContract] 02 public class ReportGeneratorService 03 { 04 ... 05 private int GenerateReports(int clientID) 06 { 07 ... 08 return 0; 09 } 10 } You need to ensure that client applications can initiate reports without waiting for status. Which two actions should you perform (Each correct answer presents part of the solution. Choose two.) （）。

A. Insert the following code at line 04. [OperationContract(IsOneWay=true)]
B. Insert the following code at line 04. [OperationContract(AsyncPattern=false)]
C. At line 05, change the GenerateReports method from private to public.
D. Remove line 08. At line 05, change the return type of GenerateReports method to void.

单项选择题Your company has a Windows Communication Foundation (WCF) service at the URL http: services.contoso.com OrderLookupService.svc.The section of the configuration file is as follows. (Line numbers are included for reference only.)01 02 03 04 05 06 ...0708 09 10 11 You need to ensure that the service publishes the WSDL description at http: services.contoso.com OrderLookupService.svc?wsdl. What should you do?（）

A.
B.
C.
D.

单项选择题You are developing a Windows Communication Foundation (WCF) service. The service operation takes a customer number as the only argument and returns information about the customer. The service requires a security token in the header of the message. You need to create a message contract for the service. Which code segment should you use?（）

A.
B.
C.
D.

单项选择题You are developing a client application that consumes a Windows Communication Foundation (WCF) service. You use the svcutil.exe utility to create a proxy for the service. You use the svcutil.exe switches that generate asynchronous calls. GetFlight is a service operation that takes no parameters and returns a string. The GetFlightCallback method must be called when the service operation returns.You create an instance of the client proxy with the following code:var client = new TranvelServiceClient();You need to ensure that a callback is received when the GetFlight operation is called asynchronously. Which code segment should you use?（）

A. client.BeginGetFlight(GetFlightCallback, null); client.GetFlight();
B. client.GetFlight(); client.BeginGetFlight(GetFlightCallback, null);
C. client.GetFlightCompleted += new EventHandler(GetFlightCallback); client.GetFlightAsync();
D. IAsyncResult asyncResult = client.BeginGetFlight(GetFlightCallback, client); client.EndGetFlight(asyncResult);