What exams should I pass to get the best it certification?
You should try cisco exam I think.
I also agree that you should try passing Cisco exam. It is really good for you, but you should really get prepared for it and if you need training just go to https://www.spotoclub.com/. They helped me pass that exam and get certification and without them I would not be able to do it. They even had questions that were on my exam, so it was much easier. It was really hard to find books and materials to study and that is why I have chosen to do the training.