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Confluent CCDAK Exam Syllabus Topics:

Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions:

1. You need to configure a sink connector to write records that fail into a dead letter queue topic. Requirements:
Topic name: DLQ-Topic
Headers containing error context must be added to the messagesWhich three configuration parameters are necessary?(Select three.)

A) errors.deadletterqueue.context.headers.enable=true
B) errors.log.enable=true
C) errors.log.include.messages=true
D) errors.tolerance=none
E) errors.tolerance=all
F) errors.deadletterqueue.topic.name=DLQ-Topic

2. Which configuration determines how many bytes of data are collected before sending messages to the Kafka broker?

A) send.buffer.bytes
B) max.block.size
C) buffer.memory
D) batch.size

3. (You are experiencing low throughput from a Java producer.
Kafka producer metrics show a low I/O thread ratio and low I/O thread wait ratio.
What is the most likely cause of the slow producer performance?)

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

4. (Which configuration is valid for deploying a JDBC Source Connector to read all rows from the orders table and write them to the dbl-orders topic?)

A) {"name": "jdbc-source","connector.class": "io.confluent.connect.jdbc.DdbcSourceConnector","tasks.
max": "1","connection.url": "jdbc:mysql://mysql:3306/dbl?user=user&useAutoAuth=true","topic.
prefix": "dbl-","table.whitelist": "orders"}
B) {"name": "dbl-orders","connector.class": "io.confluent.connect.jdbc.DdbcSourceConnector","tasks.
max": "1","connection.url": "jdbc:mysql://mysql:3306/dbl?user=user&password=pas","topic.prefix":
"dbl-","table.blacklist": "ord*"}
C) {"name": "jdbc-source","connector.class": "io.confluent.connect.jdbc.JdbcSourceConnector","tasks.
max": "1","connection.url": "jdbc:mysql://mysql:3306/dbl?user=user&password=pas","topic.prefix":
"dbl-","table.whitelist": "orders"}
D) {"name": "orders-connect","connector.class": "io.confluent.connect.jdbc.DdbcSourceConnector","tasks.
max": "1","connection.url": "jdbc:mysql://mysql:3306/dbl","topic.whitelist": "orders","auto.create":
"true"}

5. You need to set alerts on key broker metrics to trigger notifications when the cluster is unhealthy.
Which are three minimum broker metrics to monitor?
(Select three.)

A) kafka.controller:type=ControllerStats,name=UncleanLeaderElectionsPerSec
B) kafka.controller:type=KafkaController,name=OfflinePartitionsCount
C) kafka.controller:type=KafkaController,name=ActiveControllerCount
D) kafka.controller:type=KafkaController,name=LastCommittedRecordOffset
E) kafka.controller:type=KafkaController,name=TopicsToDeleteCount

Solutions: