Why did i not get this earlier?

I was earlier sad that my first attempt at Palo Alto PCCSE was not successful. But my second attempt was very good. I passed Palo Alto Cloud Security Engineer exam at first attempt. The mock tests have similar questions, test pattern, multiple choices, timed duration and so many other things that it feels that i am giving the actual exam. Practicing on them made me tougher and made me score good at second attempt.