Tell me about a time you worked with a diverse team.

Interviewers ask diversity questions to determine if you possess cultural competence. This is loosely defined as one's ability to understand, appreciate, and interact with people from cultures or belief systems different from your own. These days, it is widely accepted that building diverse teams fosters a more collaborative and innovative working environment. So, by gauging your response, they'll conclude how well you work with and relate to fellow team members from different backgrounds than your own.