Your company has three Kafka clusters: Development, Testing, and Production.

C is true: When a new broker is added,no partitions are assigned to itunless you create new topics orreassign existing onesusing kafka-reassign-partitions.sh.

D is true: Kafka brokers arehot-pluggable; no need to stop the cluster when scaling.

FromKafka Operations Guide:

“A newly added broker won’t be assigned partitions until reassignments or new topic creation.”

“Kafka allows dynamic scaling by adding brokers without downtime.”

A is false: Broker IDs must bemanually setunless using dynamic broker registration in KRaft mode.

B is false unless the cluster usesKRaft modeand the broker isspecifically assigneda controller role.