A self-hosted Windows Communication Foundation (WCF) service uses a secure HTTP binding with a custom principal permission mode. The binding requires users to provide their Windows logon credentials. You need to retrieve the identity of the caller.What are two possible properties you can use to achieve this goal? (Each correct answer presents a complete solution Choose two)（）A. Thread.CurrentPrincipal.Identity.NameB. HttpContext.Current.User.Identity.NameC. ServiceSecurityContext.Current.PrimaryIdentity.NameD. OperationContext.Current.ServiceSecurityContext.PrimaryIdentity.Name
A self-hosted Windows Communication Foundation (WCF) service uses a secure HTTP binding with a custom principal permission mode. The binding requires users to provide their Windows logon credentials. You need to retrieve the identity of the caller.What are two possible properties you can use to achieve this goal? (Each correct answer presents a complete solution Choose two)（）
A. Thread.CurrentPrincipal.Identity.Name
B. HttpContext.Current.User.Identity.Name
C. ServiceSecurityContext.Current.PrimaryIdentity.Name
D. OperationContext.Current.ServiceSecurityContext.PrimaryIdentity.Name
相关考题：
You are developing a Windows Communication Foundation (WCF) service.You need to enable security auditing for all events.What should you do?() A. Set the serviceAuthorizationAuditLevel setting to Success and the messageAuthenticationAuditLevel setting to Success.B. Set the messageAuthenticationAuditLevel setting to Success and the auditLogLocation setting to Application.C. Set the serviceAuthorizationAuditLevel setting to SuccessAndFailure and the messageAuthenticationAuditLevel setting to SuccessAndFailure.D. Set the messageAuthenticationAuditLevel setting to SuccessAndFailure and the auditLogLocation setting to Security.
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.
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.
You are developing a Windows Communication Foundation (WCF) service. The service configuration file has a element defined. You need to ensure that all security audit information, trace logging, and message logging failures are recorded.Which configuration segment should you add to the element?（）A.B.C.D.
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.
You are creating a Windows Communication Foundation (WCF) service. You need to ensure that the service is compatible with ASP.NET to make use of the session state. Which binding should you use?() A. NetTcpContextBindingB. BasicHttpContextBindingC. NetTcpBindingD. NetMsmqBinding
You have an existing Windows Communication Foundation (WCF) service. You need to ensure that other services are notified when the service is started.What should you do?() A.B.C.D.
A Windows Communication Foundation (WCF) solution provides a session-based counter.The service is self-hosted. The hosting code is as follows:ServiceHost host = new ServiceHost(typeof(CounterService));NetTcpBinding binding1 = new NetTcpBinding(SecurityMode.None);host.AddServiceEndpoint(MyApplication.ICounterService, binding1, net.tcp://localhost:23456);host.Open();This service is currently exposed over TCP, but needs to be exposed to external clients over HTTP. Therefore, a new service endpoint is created with the following code:host.AddServiceEndpoint(MyApplication.ICounterService, binding2, http://localhost:12345);You need to complete the implementation and ensure that the session-based counter will perform over HTTP as it does over TCP.What should you do?（）A.B.C.D.
You have a secured Windows Communication Foundation (WCF) service. You need to track unsuccessful attempts to access the service. What should you do?() A. Set the authorization Manager Type attribute of the service Authorization behavior to Message.B. Set the include Exception Detailsln Faults attribute of the service Debug behavior to true.C. Set the Mode attribute of the security configuration element to Message.D. Set the message Authentication AuditLevel attribute of the service Security Audit behavior to Failure.
You are developing a data contract for a Windows Communication Foundation (WCF) service. The data in the data contract must participate in round trips. Strict schema validity is not required. You need to ensure that the contract is forward-compatible and allows new data members to be added to it. Which interface should you implement in the data contract class?（）A.ICommunicationObjectB.IExtensionC.IExtensibleObjectD.IExtensibleDataObject