单项选择题
A. Close the WCF endpoint.
B. Throw an exception to cancel the request.
C. Redirect incoming requests to a different worker role instance.
D. Remove the worker role instance from the load balancer rotation.
单项选择题 You plan to host a Windows Communication Foundation （WCF） service in a Windows Azure worker role. Custom code is necessary to initialize and configure the service endpoint. You need to recommend the point at which the application should initialize the WCF service. What should you recommend？（）
单项选择题 You are designing a Windows Azure application. The application will include services hosted in different geographic locations. The service locations may change. You must minimize the cost of communication between services. You need to recommend an approach for calling the services. What should you recommend？（）
单项选择题 You are evaluating a Windows Azure application. The application uses one instance of a web role. The role instance size is set to Medium. The application does not use SQL Azure. You have the following requirements for scaling the application： - Maximize throughput. - Minimize downtime while scaling. - Increase system resources. You need to recommend an approach for scaling the application. What should you recommend？（）