Confluent CCAAK Exam With Confidence Using Practice Dumps

The kafka-consumer-groups.sh script is used to monitor consumer group offsets and lag. It shows the current offset, log end offset, and lag for each partition consumed by a consumer group.

From Kafka documentation:

“You can use kafka-consumer-groups.sh with the --describe flag to get the offset lag per consumer group.”

A → Incorrect: No such built-in script.

B → Correct: Official script for viewing consumer group lag.

C → Incorrect: Does not exist as a built-in Kafka tool.

D → Incorrect: Used for partition reassignment, unrelated to lag monitoring.

Page Reference:

Kafka: The Definitive Guide, 1st Edition, Chapter 10, p. 308

Apache Kafka Documentation: kafka-consumer-groups.sh usage

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 uses a pull model for consumers. The consumer polls the broker for available data. This contrasts with push models (used in traditional messaging systems), where the server pushes messages to consumers.

From Kafka documentation:

“Kafka’s consumers use a pull model, where the consumer requests messages from the broker at its own pace.”

A → Incorrect: Kafka does not push messages.

B → Incorrect: Kafka is a publish-subscribe system, but not the model used for message delivery to consumers.

C → Correct: Consumers explicitly pull messages.

D → Invalid in Kafka terminology.

Page Reference:

Kafka: The Definitive Guide, 1st Edition, Chapter 4, p. 126

Apache Kafka Documentation: Consumer Design Overview