basic service operations service name

I am not very computer literate and need some help.  I cannot for the life of me find how  or what name to use to incorporate the service name into this:

To verify the state in which a service is operating:

1. Click the Start button, Run, then type cmd to open a command prompt.
2. Type sc interrogate service_name (where service_name is the name of the service) at the command prompt to update the status of that service in Service Control Manager.

I understand how to get into and use the command prompt but this is the part which I am confused on... sc interrogate (service_name)  What service name am I using, where do I find that information.  The event ID is 7011.