You are creating an ASP.NET web application that hosts several Windows Communication Foundation (WCF) services.
The services have ASP.NET Compatibility Mode enabled. Users authenticate with the Web application by using a cookie-based ASP.NET Forms Authentication model.
You add a service file named Authentication.svc that contains the following code segment:
<%@ ServiceHost Service="System.Web.ApplicationServices.AuthenticationService"
Factory="System.Web.ApplicationServices.ApplicationServicesHostFactory" %>
You need to ensure that users can access the WCF services without having to re-authenticate.
Which two configuration settings should you add? (Each is part of a complete solution. Choose two.)（）

单项选择题You have a self-hosted Windows Communication Foundation (WCF) service. You need to configure the service to provide an X509 certificate during authentication. What should you use to configure the service?（）

A. the Certificate property of the X509 Certificate lnitiator Service Credential class
B. the SetCertificate method of the X509 Certificate Initiator Service Credential class
C. the SetCertificate method of the X509 Certificate Recipient Service Credential class
D. the TrustedStoreLocation property of the X509 Certificate Recipient Service Credential class

单项选择题You are creating a Windows Communication Foundation (WCF) service based on WSHttpBinding. New audit requirements dictate that callers must be authenticated on every call to ensure that their credentials have not been revoked.You need to ensure that the service will not cache the security request token. What should you do?（）

A. Apply a ServiceBehavior attribute to the service implementation class with the lnstanceContextMode property set to Single.
B. In the message security configuration, change clientCredentialType from lssuedToken to UserName
C. In the message security configuration, set establishSecurityContext to false.
D. At the end of every operation, call the SessionStateUtility.RaiseSessionEnd method.

单项选择题You are using Windows Communication Foundation (WCF) to create a service. You need to implement a custom message-level security binding element. Which binding element should you use?（）

A. Transport Security Binding Element
B. Https Transport Binding Element
C. Ssl Stream Secunty Binding Element
D. Windows Stream Security Binding Element

单项选择题A Windows Communication Foundation (WCF) service sends notifications when the service is started and stopped.You need to implement a client that logs these notifications. Which class should you use?（）

A. AnnouncementService
B. AnnouncementClient
C. DiscoveryClient
D. HttpListener

单项选择题You are implementing a Windows Communication Foundation (WCF) client application that consumes the ICatalog and lCatalog2 service interfaces.You need to ensure that the client discovers services implementing these interfaces. The services may already be online or may come online within a 30 second time limit. How should you use WCF Discovery to accomplish this?（）

A. Create one FindCriteria object for each interface and set the Duration of each FindCriteria to 30 seconds. Call the FindAsync method of the DiscoveryClient class twice, one time for each of the FindCriteria objects, to search for the services.
B. Create one FindCriteria object for each interface and set the Duration of each FindCnteria to two seconds. Create a loop that calls the Find method of the DiscoveryClient class to search for the services. Within each loop iteration, call the Find method of the DiscoveryClient class once for each of the FindCriteria objects. Run the loop until a service is found or 30 seconds pass.
C. Create a single FindCriteria object and add both interfaces to its ContractTypeNames collection. Set the criteria's Duration to two seconds. Create a loop that calls the Find method of the DiscoveryClient class to search for the services. Within each loop iteration, call the Find method of the DiscoveryClient class to search for the services Run the loop until a service is found or 30 seconds pass.
D. Create a single FindCritera object and add both interfaces to the ContractTypeNames collection. Set the Duration to 30 seconds and use the FindAsync method of the DiscoveryClient class to search for the services.