[CentOS] why does "rescue" mode bring me to runlevel 5 (multi-user target)?

Fri Mar 2 10:02:32 UTC 2018
John Hodrien <J.H.Hodrien at leeds.ac.uk>

On Fri, 2 Mar 2018, Robert P. J. Day wrote:

>  finishing a week of teaching a comptia linux+ class off of centos
> 7.4 and wanted to demo how to boot to "rescue" mode, so i rebooted,
> selected "rescue" mode at grub menu, which still booted to full
> multiuser, graphical mode. what am i doing wrong? or is this a dumb
> question?

It's is not what you think it is.

$ yum info dracut-config-rescue

It's not the same as the rescue mode off the DVD.