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audit requirements dictate that callers must be authenticated on every call to ensure that their credentials have not been revoked.You need to ensure that the service will not cache the security request token.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