Re: If and only if ...
The RHCE exam is a practical exam - receive a broken VM, fix it in ways that the check script can detect. The NDA and the haze of years prevent me from giving much more detail than that.
It is definitely not a mulitple-choice test.
Still, RHEL 7 is still current, and my cert for it expired a few years ago, presumably because Red Hat consider the certification arm a profit center.
I am not interested in renewing it with my own money. If someone wants to pay for it on my behalf, I'm listening.