I chose the PDF version of the Killtest HPE3-CL12 practice questions because it was convenient to use during my daily study. I could review the questions anytime, mark the ones I got wrong, and go back to them several times before the exam. The biggest benefit for me was that the PDF practice helped me find weak areas in my HPE Artificial Intelligence knowledge and made my final review much more focused. After working through the questions repeatedly, I felt more familiar with the exam topics and much more confident in my preparation. Overall, the PDF version was simple, practical, and genuinely useful.