Confluent Certified Developer for Apache Kafka Certification Examination 認定 CCDAK 試験問題:
1. (An S3 source connector named s3-connector stopped running.
You use the Kafka Connect REST API to query the connector and task status.
One of the three tasks has failed.
You need to restart the connector and all currently running tasks.
Which REST request will restart the connector instance and all its tasks?)
A) POST /connectors/s3-connector/restart?includeTasks=true&onlyFailed=true
B) POST /connectors/s3-connector/restart?includeTasks=true
C) POST /connectors/s3-connector/tasks/0/restart
D) POST /connectors/s3-connector/restart
2. 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.)
A) The number of partitions does not match the number of application instances.
B) An instance of the application is crashing and being restarted.
C) There is a slow consumer processing application.
D) There is a storage issue on the broker.
3. You are developing a Java application using a Kafka consumer.
You need to integrate Kafka's client logs with your own application's logs using log4j2.
Which Java library dependency must you include in your project?
A) SLF4J implementation for Log4j 1.2 (org.slf4j:slf4j-log4j12)
B) Just the log4j2 dependency of the application
C) SLF4J implementation for Log4j2 (org.apache.logging.log4j:log4j-slf4j-impl)
D) None, the right dependency will be added by the Kafka client dependency by transitivity.
4. You need to collect logs from a host and write them to a Kafka topic named 'logs-topic'. You decide to use Kafka Connect File Source connector for this task.
What is the preferred deployment mode for this connector?
A) Standalone mode
B) Distributed mode
C) SingleCluster mode
D) Parallel mode
5. Which statement is true about how exactly-once semantics (EOS) work in Kafka Streams?
A) EOS in Kafka Streams is implemented by creating a separate Kafka topic for deduplication of all messages processed by the application.
B) Kafka Streams disables log compaction on internal changelog topics to preserve all state changes for potential recovery.
C) Kafka Streams provides EOS by periodically checkpointing state stores and replaying changelogs to recover only unprocessed messages during failure.
D) EOS in Kafka Streams relies on transactional producers to atomically commit state updates to changelog topics and output records to Kafka.
質問と回答:
| 質問 # 1 正解: B | 質問 # 2 正解: B、C | 質問 # 3 正解: C | 質問 # 4 正解: A | 質問 # 5 正解: D |














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