All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
It is permissible to benefit from the published reviewer in sites or in other places even if some or all of it comes in the exam for those certificates as this does not constitute cheating or deceit.
Besides, the institutions may make their exams different from that reviewer and they may make it the same as it. What matters is that the candidate revises what is included in the reviewer and masters it so that he will benefit from it if anything of it comes in the exam. So, this is permissible.
Allaah Knows best.