I am not acquainted with the Chinese system, but here in India, you have to personally go to the designated test centers and take the test. At the center there

I am not acquainted with the Chinese system, but here in India, you have to personally go to the designated test centers and take the test. At the center there is some Airport level frisking before you get to see your computer and you need to have your passport with you to prove your identity (if I remember correctly). You are also not allowed to wear jackets/overcoats/caps while taking the test. Really very little chance for gaming this system.