Yes, you know when you are being evaluated. You have a meeting with management where you go thru some training manual pages about the program and expectations. As far as the questions go, mostly Operations manual and different country regs. from Jeppesen manual and other book stuff. Depends on evaluator, some don't ask anything.
Attitude is something that you can not always change. It is not bad vs. good, but about respecting the local way, understanding your position and adapting your behavior to fit in. Some people get it, some just don't. You must remember that we are always outsiders, "cheap labor" (some-one said "we are their Mexicans") temporary help. In their mind we are not equal to the host. There are many other things I could say, but it will not make a difference. This job is not for every one, either you fit in, or you don't.