Which of the following descriptions about the characteristics of the Kafka Partition copy is correct?

Question

Options

• AFollower synchronizes data from Leader by pulling
• BThe master copy is called Leader, and the slave copy is called Follower
• CBoth consumers and producers read and write data from the Leader, and can also directly
• DReplicas are in units of partitions. Each partition has its own slave copy of the master copy

• A
  74% (17)
• C
  26% (6)

Explanation

Options A, B, and D correctly capture the core replication model of Kafka: replicas are organized at the partition level (D), with each partition having exactly one Leader and zero or more Followers (B), and Followers actively pull messages from the Leader rather than waiting to be pushed to (A) - this pull model allows each Follower to consume at its own pace and recover gracefully after downtime.

Option C is incorrect because, in the standard Kafka architecture, both producers and consumers interact exclusively with the Leader replica; Followers exist solely for fault tolerance and do not serve reads or writes directly (Kafka 2.4+ introduced optional follower fetching, but it is not a default characteristic and the statement as written is misleading and incomplete).

Memory tip: Think of a Kafka Follower as a student copying notes from a teacher - the student (Follower) walks up and grabs the notes (pull), the teacher (Leader) never chases the student down to hand them over (no push). All classroom questions (reads/writes) go to the teacher, not the student.

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