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최신 Confluent Certified Developer CCDAK 무료샘플문제

문제 #1
(You deploy a Kafka Streams application with five application instances.
Kafka Streams stores application metadata using internal topics.
Auto-topic creation is disabled in the Kafka cluster.
Which statement about this scenario is true?)

A. The application will terminate with a non-retriable exception.
B. The application will be on hold until internal topics are created manually.
C. The application will work, but application metadata will not be stored.
D. The application will continue to work and internal topics will be created, even if auto-topic creation is disabled.

문제 #2
(You have a Kafka consumer in production actively reading from a critical topic from which multiple other applications are consuming.
You have a new requirement to update the offset of your consumer to start reading from the beginning of the topic.
Which action would you take?)

A. Start a new consumer application with the same consumer group id.
B. Temporarily configure the topic's retention.ms parameter to 0 to empty the topic.
C. Update the consumer configuration by setting the auto.offset.reset property to earliest.
D. Update the consumer group's offset to the earliest position using the kafka-consumer-groups CLI tool.

문제 #3
Which two statements are correct about transactions in Kafka?
(Select two.)

A. Consumers can consume both committed and uncommitted transactions.
B. Transactions are only possible when writing messages to a topic with single partition.
C. All messages from a failed transaction will be deleted from a Kafka topic.
D. Information about producers and their transactions is stored in the _transaction_state topic.
E. Transactions guarantee at least once delivery of messages.

문제 #4
You are experiencing low throughput from a Java producer.
Metrics show low I/O thread ratio and low I/O thread wait ratio.
What is the most likely cause of the slow producer performance?

A. The producer is sending large batches of messages.
B. The producer code has an expensive callback function.
C. There is a bad data link layer (layer 2) connection from the producer to the cluster.
D. Compression is enabled.

문제 #5
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 new node can be added without stopping existing cluster nodes.
B. A new node will not have any partitions assigned to it unless a new topic is created or reassignment occurs.
C. A newly added node will have KRaft controller role by default.
D. A node ID will be assigned to the new node automatically.

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