There's a "transfer amount" field: valid values are from $1 to $1,000, and cents are allowed. What checks would you put together for this field, and why those in particular?
~4 min by voice
How to approach it
The interviewer wants to see whether you apply equivalence classes and boundary values deliberately: choosing the boundary step based on the field's precision (one cent), not forgetting about the input format, and checking validation on the server, not just in the UI.
The interviewer will ask this question and listen. Think out loud and ask for a hint if you need one. When you're done, pause or tap “That's my answer”. In about a minute, your score and the points you covered show up here.