多项选择题 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?（）

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audit requirements dictate that callers must be authenticated on every call to ensure that their credentials have not been revoked.You need to ensure that the service will not cache the security request token.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?（）