Confirm any live exercise

"The platform team resisted because the first trial added review work and had no clear owner. I compared the failed tasks, narrowed the workflow and built a review checklist with two senior developers. In the next group, retained use rose and review time returned to its starting range. I would involve those reviewers before the first trial next time."

Ask for the task, time limit, allowed tools, expected artifact and evaluation criteria. Preparation improves when you replace an imagined onsite with the real assignment. If the task is still vague, ask which decision the interviewer wants to see. Ask whether preparation work must be submitted in advance.