CCAAK Exam Dumps : Confluent Certified Administrator for Apache Kafka

Kafka architecture maintains exactly one active Controller at any given time, regardless of the number of brokers. The Controller is responsible for administrative tasks like partition leader election and topic creation. The remaining brokers are replicas, ready to take over if the Controller fails.

From Kafka documentation:

“At any given time, there is only one active controller in the Kafka cluster.”

Even in a cluster with 4 brokers, only 1 broker acts as the Controller.

Page Reference:

Kafka: The Definitive Guide, 1st Edition, Chapter 6, p. 189

Apache Kafka Documentation: Controller Role Description

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Kafka supports multiple listeners, allowing you to configure different security settings for internal and external traffic. For example, one listener can use PLAINTEXT for internal replication traffic, and another can use SASL_SSL for external client traffic.

From Kafka documentation:

“Kafka allows configuration of multiple listeners to segregate internal and external traffic, each with its own security protocol.”

B → Correct: Enables secure and isolated communication channels.

A → Unnecessary and inefficient.

C → Invalid: A single listener supports only one protocol.

D → Not a Kafka-level configuration.

Page Reference:

Kafka: The Definitive Guide, 1st Edition, Chapter 10, p. 305

Apache Kafka Documentation: Security Configuration – Multiple Listeners

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Kafka uses ZooKeeper as its distributed coordination system. ZooKeeper helps manage cluster metadata and leader election.

A → Correct: Brokers retrieve leader/partition assignments from ZooKeeper.

D → Correct: ZooKeeper is used to elect the controller broker responsible for cluster-wide administrative tasks.

From Kafka documentation:

“ZooKeeper maintains metadata for Kafka, including broker registration and controller election.”

B → Incorrect: Broker scaling is not handled via ZooKeeper.

C → Incorrect: Replication across clusters is not related to ZooKeeper.

Page Reference:

Kafka: The Definitive Guide, 1st Edition, Chapter 6, p. 189–191

Apache Kafka Documentation: ZooKeeper Integration

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