Exam 70-487 topic 1 question 104 discussion

"You are developing a Windows Communication Foundation (WCF) service for a company." There is not a single word about "Azure Relay". And the linked documentation of Azure Relay states clearly, that: "The main difference is that this configured service endpoint refers to a NetTcpRelayBinding binding, which isn't part of the .NET Framework. NetTcpRelayBinding is one of the bindings defined by the service." (https://docs.microsoft.com/en-us/azure/azure-relay/service-bus-relay-tutorial#implement-the-wcf-contract) So in this case, I would answer "C: NetTcpBinding"

I think the answer is B NetTcpRelayBinding because the on premise WCF endpoints need to be exposed in the cloud instead of locally. The main difference between WCF and WCF Relay is that the endpoint is exposed in the cloud instead of locally on your computer. Azure Relay takes existing WCF web services and makes those services securely accessible to solutions that are outside the corporate perimeter without requiring intrusive changes to the corporate network infrastructure. https://docs.microsoft.com/en-us/azure/azure-relay/service-bus-dotnet-hybrid-app-using-service-bus-relay