Question about internal yum repos for different versions of Centos

Hello folks.

In the past I was able to create internal repos for Centos 6.5

However in the place I am at now we use Centos 6.5 - 6.6 - 6.7 and 7.0 - 7.1

Here are my questions.

• Each version must have its own repo. Yes? Example a repo for 6.5 - 6.7 and so forth.

• If that is the case, is that even possible seeing that for example 6.5 - 6.6 are old releases?

Thank you.