单项选择题 You create a service and deploy it on a network in a building named Building1. You will deploy the service to Building2. The service in Building1 is configured using the following discovery scopes. The service in Building2 will be configured using the following discovery scopes. You need to ensure that the client application can discover the service in Building1 or the service in Building2. Which scopes should you add to the client configuration file? （）

单项选择题 Your company has an existing Windows Communication Foundation (WCF) service that allows business partners to place orders. The service uses netMsmqBinding. You find that processing every order in its own transaction is causing a delay. You need to ensure that the service is configured to process multiple orders in one transaction. What should you do? （）

单项选择题 You are developing a Windows Communication Foundation (WCF) service that contains the following operation contract. [OperationContract] CustomerNames GetCustomerNames(); The operation returns customer names. You need to develop a definition for the operation contract that produces XML with the following structure. Which code segment should you use? （）。