Your question is Kafka System Design and Guarantees. 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 have you used Kafka, what was your role, and what guarantees does Kafka provide?
Asked in the L1 stage. Keep your answer focused on your hands-on use of Kafka, the part you owned end to end, and the delivery guarantees you relied on. Be ready to explain ordering, durability, replication, consumer offsets, and where Kafka does not provide exactly-once behavior by default.