You have 25 minutes for 15 original questions about Power Query data preparation. This is a focused PL-300 preparation section. The full certification also tests modeling, reports and administration, so this score doesn't estimate a certification result. The section includes single answers, multiple answers and ordered steps, with a small case requirement in each prompt.
The clock starts when the section opens and continues between questions and after a reload. Your selections stay in this browser tab. At expiry you can use Untimed review, or Restart mock to clear this attempt while preserving progress in other lessons. Checking gives an explanation immediately because this is practice. Use Show me how only when you want to reveal an answer; it counts as shown work in your lesson progress.