is importing a dtsx file Necessary

Ok, I'm actually adding a SSIS job to my job agent on my test SQL server. Noticed that when I go to my job agent --> add new job, under the steps option, I click new. this then takes me to the new job step window. When I select

Type as SQL Server Integrated Services, I then see some new tabs at the bottom of the form. Under package source I can select File System, SQL Server, or SSIS Package Store, then I have to select the location of the dtsx file.

So my question is, since I can select the actual file (package) I want to run from here, do I really have to import a package to the file system or MSDB under the SQL Integration Services on the server?

It appears to me that its kind of the same thing.

I'm new to this SSIS, SQL DB work, so I'm learning as I go. . . .Yes, you do. If the file doesn't reside on the server, how will the agent job be able to find it?

I believe that when you select filesystem in the Agent job step, it's showing you your local filesystem, not that of the server.