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Confluent CCDAK Exam Syllabus Topics:

Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions:

1. Your company has three Kafka clusters: Development, Testing, and Production.
The Production cluster is running out of storage, so you add a new node.
Which two statements about the new node are true?
(Select two.)

A) A node ID will be assigned to the new node automatically.
B) A newly added node will have KRaft controller role by default.
C) A new node can be added without stopping existing cluster nodes.
D) A new node will not have any partitions assigned to it unless a new topic is created or reassignment occurs.

2. You are working on a Kafka cluster with three nodes. You create a topic named orders with:
replication.factor = 3
min.insync.replicas = 2
acks = allWhat exception will be generated if two brokers are down due to network delay?

A) NotCoordinatorException
B) NetworkException
C) NotEnoughReplicasException
D) NotLeaderForPartitionException

3. The producer code below features a Callback class with a method called onCompletion().
In the onCompletion() method, when the request is completed successfully, what does the value metadata.
offset() represent?

A) The sequential ID of the message committed into a partition
B) The ID of the partition to which the message was committed
C) The number of bytes that overflowed beyond a producer batch of messages
D) Its position in the producer's batch of messages

4. Your application is consuming from a topic configured with a deserializer.
It needs to be resilient to badly formatted records ("poison pills"). You surround the poll() call with a try/catch for RecordDeserializationException.
You need to log the bad record, skip it, and continue processing.
Which action should you take in the catch block?

A) Log the bad record and call the consumer.skip() method.
B) Log the bad record and seek the consumer to the offset of the next record.
C) Throw a runtime exception to trigger a restart of the application.
D) Log the bad record, no other action needed.

5. (You are writing a producer application and need to ensure proper delivery.
You configure the producer with acks=all.
Which two actions should you take to ensure proper error handling?
Select two.)

A) Surround the call to producer.send() with a try/catch block to catch KafkaException.
B) Check that producer.send() returned a RecordMetadata object and is not null.
C) Check the value of ProducerRecord.status().
D) Use a callback argument in producer.send() where you check delivery status.

Solutions: