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5. You are building a client for a Windows Communication Foundation (WCF) service.
You need to create a proxy to consume this service.
Which class should you use?
A. ChannelFactory<TChannel>
B. ServiceHost
C. ClientRuntime
D. CommunicationObject
Answer: A
6. A Windows Communication Foundation (WCF) service has a callback contract. You are
developing a client application that will call this service.
You must ensure that the client application can interact with the WCF service.
What should you do?
A. On the OperationContractAttribute, set the AsyncPattern property value to true.
B. On the OperationContractAttribute, set the ReplyAction property value to the endpoint
address of the client.
C. On the client, create a proxy derived from DuplexClientBase<TChannel>.
D. On the client, use GetCallbackChannel<T>.
Answer: C