Question banks and rubbish questions killed off many "highly certified" people in the IT industry 10 years ago.
We went from people who knew their stuff to hiring people who didn't have a clue, but could memorise questions and come out with a certificate.
People made money training others on how to memorise these banks.
The manufacturers only solved the problem by bringing in the people that know their stuff to write the questions and update them regularly.
Sorry state of affairs to see the aviation industry in the same state. At least all we condended with is massive IT outages as the clueless called the clued up for help.