Your question is Handle a DDoS Attack. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
How would you handle a DDoS attack?
Asked in the Round 1 stage. Reported follow-ups: Rate limiting at the frontend and backend, and caching.
Explain how you would detect the attack, distinguish it from a legitimate traffic spike, contain it at multiple layers, and restore normal service. Include the rate-limiting strategy, caching approach, monitoring signals, and the actions you would take if the attack continued.