When you find that finance and marketing define "active user" differently, bring both parties together and document the agreed definition at the SQL level. Ambiguity causes more damage than any wrong metric.
Strong answers describe: discovering that teams used different definitions for the same term, facilitating alignment discussions, documenting precise SQL-level definitions, establishing a single source of truth, and communicating changes. Best candidates discuss the political aspects of metric definition and how to get buy-in for standardisation.
Practical and underrated skill. Metric disagreements waste enormous amounts of time and erode trust. Analysts who can facilitate alignment and maintain clear definitions provide outsized value.