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The Confluent CCDAK exam is designed to test the candidate's knowledge in various areas such as Kafka architecture, deployment, Kafka configuration, message producers, message consumers, Kafka Streams, and Kafka Connect. CCDAK exam consists of 60 multiple-choice questions and must be completed within 90 minutes.

The CCDAK certification exam is a hands-on exam, where developers are required to complete a series of tasks in a Kafka cluster. The tasks include creating topics, producing and consuming messages, configuring Kafka brokers, and writing Kafka applications. CCDAK Exam is designed to test developers' ability to apply their knowledge of Kafka concepts in real-world scenarios and to ensure that they have the necessary skills to build and manage Kafka applications.

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Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions (Q54-Q59):

NEW QUESTION # 54
(You are configuring a source connector that writes records to an Orders topic.
You need to send some of the records to a different topic.
Which Single Message Transform (SMT) is best suited for this requirement?)

Answer: C

Explanation:
According to the official Apache Kafka Connect documentation, RegexRouter is the SMT specifically designed to dynamically change the destination topic name of records produced by a connector. It works by applying a regular expression to the original topic name and rewriting it to a new topic name.
This makes RegexRouter the correct choice when some records must be routed to a different topic, typically in combination with connector-level logic, predicates, or multiple connectors. It is commonly used for topic renaming, topic versioning, or routing records to alternate topics.
InsertField (Option B) only adds metadata fields (such as topic, partition, or timestamp) to the record payload and does not affect routing. TombstoneHandler (Option C) is used to manage null-value records, especially with compacted topics. HeaderFrom (Option D) copies fields into headers but does not change the target topic.
Therefore, RegexRouter is the only SMT that directly supports changing the output topic, as documented in the Kafka Connect SMT reference.


NEW QUESTION # 55
Which two statements are correct when assigning partitions to the consumers in a consumer group using the assign() API?
(Select two.)

Answer: A,C

Explanation:
Using assign() givesmanual controlover partition assignment. In this mode:
* B is true: The applicationchooses partitionsdirectly without involving the group coordinator.
* C is true: Since no group coordination occurs,no rebalancinghappens if a consumer dies.
FromKafka Consumer API Docs:
"assign() manually assigns a list of partitions to this consumer. No coordination takes place and no rebalancing is triggered."
* A is false: subscribe() and assign() aremutually exclusive.
* D is incorrect: Partitions don't need to be equal across topics.
Reference:Kafka Consumer Java API > assign() and subscribe()


NEW QUESTION # 56
An application is consuming messages from Kafka.
The application logs show that partitions are frequently being reassigned within the consumer group.
Which two factors may be contributing to this?
(Select two.)

Answer: A,D

Explanation:
Frequentrebalancesin a consumer group occur when:
* Consumers are too slowand miss heartbeats (A), or
* Instances crash or restart, triggering group membership changes (D)
FromKafka Consumer Group Coordination Docs:
"If a consumer fails to send a heartbeat in time (due to slowness or crash), it is removed from the group, causing a rebalance." Option B (partition mismatch) affectsload balancing, not rebalance frequency.
Option C (broker storage) doesn't trigger consumer rebalances.
Reference:Kafka Consumer Group Coordination and Heartbeats


NEW QUESTION # 57
We have a store selling shoes. What dataset is a great candidate to be modeled as a KTable in Kafka Streams?

Answer: A,B

Explanation:
Aggregations of stream are stored in table, whereas Streams must be modeled as a KStream to avoid data explosion


NEW QUESTION # 58
The rule "same key goes to the same partition" is true unless...

Answer: D

Explanation:
Increasing the number of partition causes new messages keys to get hashed differently, and breaks the guarantee "same keys goes to the same partition". Kafka logs are immutable and the previous messages are not re-shuffled.


NEW QUESTION # 59
......

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