This is also a notable entry among common Kafka interview questions. The geo-replication feature helps in replication throughout different clusters and different data. Kafka Mirror is the ideal tool for enabling geo-replication with a process known as mirroring. The mirroring process is slightly different from replication throughout different nodes in one cluster. The Kafka Mirror Maker ensures replication of messages from topics belonging to one or more Kafka clusters to the destination cluster having similar topic names.