Licensing Requirement to Install Reporting Service on separate server

I was asked if the SQL Server Reporting Service is installed in a separate server from where the SQL Server database engine is installed, does it need another SQL Server license?

Although I am not a licensing expert (and not many people seem to be able to understand Microsoft Licensing scheme), but I can confidently say Yes to the question above.

The answer lies in the following document:

Licensing Doc

In the above scenario, you need two SQL Server license.

I hope Microsoft can be more open and clear in communicating licensing issue and requirement in the future. It will be good if they can include some of the common deployment scenario for their software together with the licensing requirement in Technet.