There are some certifications, but not all companies recognize them
I would give certifications very little weight too, if I were responsible for hiring. Perhaps there are useful certifications, but the few I've personally had experience with (e.g. Oracle) were useless.
Lots of irrelevant details. Lots of memorization of things one needn't remember. Very little insight or skills one might actually use. My impression is that bad programmers can pass with a bit of practise. Perhaps more damning, great programmers could very well fail without practise.
Perhaps it's arrogant, but I have a hard time believing people who love programming spend their time on that. Not more than once or twice, anyway.
(I got pretty good scores, I'm not just angry about failing. I'm not alone either.)
So yes, reputation is the way to go :-)