yum conf configuration question

Hi...

I would like to exclude all kernels past 7.0 and all updates and dependencies pertaining to 7.1 and 7.2. I know of the following switches to add to the yum.conf, however, I don't know the proper syntax as it applies to what I am trying accomplish (if it is possible at all):

exclude=kernel* redhat-release*

Above is the exclusion switch, I found in https://access.redhat.com/solutions/10185. How do I specify 7.1 and 7.2? Or is this not required, that the above statement will ignore anything above 7.0?

Thank you.