Do Instances Share Same Services? - SQL Server

Question

Lets say i installed two named SQL Server 2008 instances e.g. A and B, will i have two services of each type e.g. two analysis service, two reporting service and so on, one service for A and the other for B? If yes, then it is known a service listens on a port number, how two same services going to listen on the port?

I hope this is clear enough. Thanks

Answer 1

The short answer is: they do not. When you create a second instance, it is listening on a different port than the default instance which, by default, listens on port 1433.