Hi Wendell,
Thanks for the information. I also agree that "thinking about what we’re learning" is very important, it strengthen connectors as you said but we live in such a busy world that sometimes I just want to "shutdown" and relax if you know what I mean which is also important.

Also specially when it comes to Cisco exams (but not restricted to it) I think it's important to somehow "validate" the knowledge and it's good to go through a questionary, simulations etc