You would be well advised
to consider that "the ability to 'pass an exam'" is no substitute for real knowledge. It will not empower you to gain a job that you have not made yourself truly qualified
to do ... no matter what the peddlers of those exams might say to the contrary.
Consider this analogy:
"You buy a book on carpentry at the bookstore and 'skim' it ... just enough, you think, to bullshit your way through an interview on the subject. Then, the worst
possible thing happens: you pass the interview, you get
the job, and now what?"
This point can't be emphasized enough: your reputation follows you forever.
first job was this: tearing paper off a line-printer and shoving it through the appropriate slot in the wall. I didn't care, because it meant that I was inside
that wall. ("Personal" computers would not be invented for another five years.) I kept my mouth as shut as I could manage, pretended
that I never watched the operator's fingers when she was typing in a password, and tried to be as helpful as I could be while minimizing
the number of stupid things I nevertheless did.
May I cordially suggest that, if you are referring to "male servers" (you sexist pig
...), you are tryin' much too hard to rise too fast, and you're gonna fall and you're gonna get hurt.