Confluent CCAAK Exam Practice Test Instant Access

Question 1

Per customer business requirements, a system's high availability is more important than message reliability.

Which of the following should be set?

AUnclean leader election should be enabled.

BThe number of brokers in the cluster should be always odd (3, 5. 7 and so on).

CThe linger.ms should be set to '0'.

DMessage retention.ms should be set to -1.

Answer : A

Enabling unclean leader election allows Kafka to elect a non-in-sync replica as leader if all in-sync replicas are unavailable. This sacrifices message reliability (possible data loss) in favor of high availability, aligning with the requirement.

Question 2

Which ksqlDB statement produces data that is persisted into a Kafka topic?

ASELECT (Pull Query)

BSELECT (Push Query)

CINSERT VALUES

DCREATE TABLE

Answer : C

INSERT VALUES is used to write data directly into a Kafka topic through a ksqlDB stream or table. This data is persisted.

Question 3

Which of the following are Kafka Connect internal topics? (Choose three.)

Aconnect-confiqs

Bconnect-distributed

Cconnect-status

Dconnect-standalone

Econnect-offsets

Answer : A, C, E

connect-configs stores connector configurations.

connect-status tracks the status of connectors and tasks (e.g., RUNNING, FAILED).

connect-offsets stores source connector offsets for reading from external systems.

Question 4

Where are Apache Kafka Access Control Lists stored'?

ABroker

BZooKeeper

CSchema Registry

DConnect

Answer : B

In Apache Kafka (open-source), Access Control Lists (ACLs) are stored in ZooKeeper. Kafka brokers retrieve and enforce ACLs from ZooKeeper at runtime.

Question 5

You have an existing topic t1 that you want to delete because there are no more producers writing to it or consumers reading from it.

What is the recommended way to delete the topic?

AIf topic deletion is enabled on the brokers, delete the topic using Kafka command line tools.

BThe consumer should send a message with a 'null' key.

CDelete the log files and their corresponding index files from the leader broker.

DDelete the offsets for that topic from the consumer offsets topic.

Answer : A

The recommended and safe method to delete a topic is to use the Kafka CLI tool kafka-topics.sh --delete command, provided that delete.topic.enable=true is set on the brokers.

Question 6

By default, what do Kafka broker network connections have?

ANo encryption, no authentication and no authorization

BEncryption, but no authentication or authorization

CNo encryption, no authorization, but have authentication

DEncryption and authentication, but no authorization

Answer : A

By default, Kafka brokers use the PLAINTEXT protocol for network communication. This means:

No encryption -- data is sent in plain text.

No authentication -- any client can connect without verifying identity.

No authorization -- there are no access control checks by default.

Security features like TLS, SASL, and ACLs must be explicitly configured.

Question 7

A company is setting up a log ingestion use case where they will consume logs from numerous systems. The company wants to tune Kafka for the utmost throughput.

In this scenario, what acknowledgment setting makes the most sense?

Aacks=0

Backs=1

Cacks=all

Dacks=undefined

Answer : A

acks=0 provides the highest throughput because the producer does not wait for any acknowledgment from the broker. This minimizes latency and maximizes performance.

However, it comes at the cost of no durability guarantees --- messages may be lost if the broker fails before writing them. This setting is suitable when throughput is critical and occasional data loss is acceptable, such as in some log ingestion use cases where logs are also stored elsewhere.

Confluent CCAAK Certified Administrator for Apache Kafka Exam Practice Test