Practicing on the same device can help with comfort and reduce avoidable friction, especially for assessments with drag-and-drop, timed navigation, or specific browser behavior. It is not a substitute for reasoning practice.

Screen size, trackpad versus mouse, keyboard shortcuts, and window layout can affect pacing more than candidates expect. Familiarity matters most when the interface itself is part of the challenge.

You do not need every practice session on the final laptop, but at least one realistic run-through on the actual setup is sensible.

Before test day, verify browser compatibility, charging, notifications, internet stability, and the physical workspace. Keep the final session focused on the environment rather than learning new content. A concise, evidence-based explanation will usually sound stronger than a long defensive one.

I would definitely do at least one practice on the exact laptop.

Does screen size matter much for data-heavy assessment questions?