Hi Steven,
I'm not sure I understand your question. Are you talking about a web service that is running stand-alone? In which case, if there is no container, then it is not running in a sandbox with anything else (because it is stand alone), and whatever sandbox it is running in (if it is even running in one) is defined by the developer of the stand alone web service.
This would be fairly unusual though, as normally you would want your web service to connect to other objects (whether data sources or applications), and you would normally want the security and sandboxing capabilities that a container will give you.
Plus you would normally not want to build everything from scratch.
So probably I am missing the question.
By the way - are these questions from a mock exam? And if so, which one? How are you finding it (I suspect it is not good given the number of questions you are raising)?
Regards, Andrew