Exam 70-487 topic 1 question 123 discussion

DRAG DROP -
You have a Windows Communication Foundation (WCF) service. The service will be consumed by following clients:
✑ a Windows Store application
✑ an ASP.NET Core web application
✑ a Java application developed and hosted by an external vendor
You need to generate proxies for each of these clients to that they can consume the WCF service.
What should you implement? To answer, drag the most appropriate implementation options to the correct application type. Each option may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
Each correct selection is worth one point.
NOTE:
Select and Place:

Suggested Answer:
Box 1: WSDL endpoint -
If you have any clients who are not .NET (like Java or PHP, for example), ChannelFactory won't work for them as that is specific to .NET and WCF. In that case, you'll either have to publish the metadata or send the client a WSDL endpoint so they can create the proxy via whatever means their language of choice uses.
Box 2: SVCUtil.exe and ChannelFactory
The use of the following classes is supported for Windows Store Applications:

ChannelFactory -
DuplexChannelFactory<TChannel>

CallbackBehaviorAttribute -
Svcutil.exe can be used to generate the proxy class file. This tool generates the proxy class file and the App.config file.

Box 3: Connected Services -
In Asp.Net core you will notice that, we don't have the option "Add Service Reference like in the older .Net Framework. The solution for this is
WCFConectedService.

Service reference -
The Asp.Net core web app can use service references to create service contracts

Box 4: Service reference -
The Windows Forms app can use service references to create service contracts

WCF Connected services -
Incorrect Answers:
Disco.exe is a legacy tool. Windows Communication Foundation should be used instead.
The .NET Configuration Code Generator is also an outdated legacy tool.
References:
https://docs.microsoft.com/en-us/dotnet/framework/wcf/feature-details/accessing-wcf-services-with-a-windows-store-client-app https://docs.microsoft.com/en-us/dotnet/framework/wcf/servicemodel-metadata-utility-tool-svcutil-exe https://aspdotnetcodehelp.wordpress.com/2017/03/27/how-to-access-wcf-service-in-asp-net-core-application/