We have prepared Confluent Certified Developer for Apache Kafka (CCDAK) certification sample questions to make you aware of actual exam properties. This sample question set provides you with information about the Apache Kafka Developer exam pattern, question formate, a difficulty level of questions and time required to answer each question. To get familiar with Confluent Certified Developer for Apache Kafka (CCDAK) exam, we suggest you try our Sample Confluent CCDAK Certification Practice Exam in simulated Confluent certification exam environment.
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Confluent CCDAK Sample Questions:
01. Your organization is developing an application that produces messages to Kafka with a requirement that the messages are evenly distributed across a topic with 20 partitions. After completing the initial design phase and client development, load testing resulted in the following:
- 5% of test messages were written to 5 partitions
- 20% of test messages were written to 10 partitions
- 75% of test message were written to 5 partitions
- Key assignment for the test messages correctly represented what is expected for the production environment
What action might result in more even distribution of produced messages across the available partitions?
(choose two)
a) Write a custom partitioner
b) Increase the number of producer clients used by the application
c) Redesign the message key
d) Distribute the topic partitions across additional brokers
02. Where are KSQL-related data and metadata stored?
a) Schema Registry
b) PostgreSQL database
c) Kafka Topics
d) Zookeeper
03. Your priority for producing messages to the Kafka cluster is maximum throughput over low latency. What would you do to accomplish this?
(choose one)
a) Set batch.size low value and linger.ms to 0
b) Set batch.size high value and linger.ms to 0
c) Set batch.size low value and linger.ms to high value
d) Set batch.size high value and linger.ms to high value
04. Which of the following is true regarding thread safety in the Java Kafka Clients?
a) One Producer needs to be run in one thread
b) One Producer can be safely used in multiple threads
c) One Consumer can be safely used in multiple threads
d) One Consumer needs to run in one thread
05. You need to guarantee that your clients can access required Kafka cluster metadata when they start up. What would you do to accomplish this?
(choose one)
a) Provide bootstrap configuration that identifies a minimum of two Zookeeper servers to send a request for cluster metadata
b) Provide bootstrap configuration that identifies a minimum of two Kafka brokers to send a request for cluster metadata
c) Provide bootstrap configuration that identifies the Kafka cluster controller to send a request for cluster metadata
d) Provide bootstrap configuration with the cluster id that the Kafka client uses to discover the cluster and all its related metadata
06. Your organization has a requirement to enrich data coming in from sensor devices that capture environmental data with sensor device profile data contained in a database that includes details such as location, device model, etc.
Which of the following scenarios would best answer this requirement?
(choose one)
a) Produce the data coming from the sensor devices into a Kafka topic using the Message Queuing Telemetry Transport (MQTT) proxy and as an intermediate step, enrich each sensor data record using the Java database connectivity (JDBC) source connector to access the sensor device profile data combined with multiple single message transforms (SMT).
b) Produce the data coming from the sensor devices into a Kafka topic using the MQTT connector and as an intermediate step, enrich each sensor data record using the JDBC sink connector to access the sensor device profile data combined with multiple SMTs.
c) Produce the data coming from the sensor devices into a Kafka topic using the MQTT proxy. Produce the sensor device profile data into a second Kafka topic using the JDBC source connector. Write a Kafka streams application to enrich the sensor data records with the sensor device profile data and write this out to a third Kafka topic.
d) Write a Kafka producer client that captures the sensor device data using the MQTT proxy and enriches each record using sensor device profile data that it directly accesses from the source database. The enriched records will then be produced into a Kafka topic.
07. Your organization has a Kafka streams application that requires access to customer profile data maintained in a traditional relational database management system (RDBMS). This customer profile data contains sensitive Personal Identifying Information (PII).
Which of the following solutions will give the Kafka streams application access to the non-PII customer profile data?
(choose one)
a) Use the Java database connectivity (JDBC) source connector to produce the customer profile data to a Kafka topic. Use a Kafka streams application to process and remove the PII from each customer profile data record as it is written to the initial Kafka topic. The Kafka streams application can then consume that topic.
b) Use the JDBC source connector to produce the customer profile data to a Kafka topic. Include a single message transform masking operation in the connector configuration to mask the PII data before it is written to the Kafka topic. The Kafka streams application can then consume that topic.
c) Use a ksqlDB application to read the customer profile data in the RDBMS, filter the PII data from each record, and write the filtered profile data to a Kafka topic. The Kafka streams application can then consume that topic.
d) Write a custom Kafka producer to access the customer profile data, remove the customer PII from each record, and produce the filtered record to a Kafka topic. The Kafka streams application can then consume that topic.
08. Your Kafka cluster consists of 3 brokers. You have 4 producer clients sending messages to the “driver” topic which currently has 12 partitions and the related produce requests are receiving timeout exceptions. What would you do to reduce these exceptions?
(choose one)
a) Increase the number of producer clients from 4 to 6
b) Increase the number of “driver” topic partitions from 12 to 15
c) Increase the number of brokers from 3 to 4 and distribute the 12 partitions equally across the 4 brokers
d) Increase the replication factor of the “driver” topic to scale out the produce requests
09. Your organization is developing an application that will render content on web pages based upon how the current user matches up against various demographic categories. When the user first accesses the web page it will generate a page view event written to a corresponding Kafka topic. The user profile database will also be ingested into a Kafka topic using a Kafka connector.
How do the web page view events and the user profile data need to be produced into their respective topics to allow for the application to easily associate each page view event with the corresponding user profile?
(choose one)
a) Configure the two topics so that they are written to the same Kafka cluster
b) Configure the two topics so they are co-partitioned
c) Stand up a producer and a Kafka connector on each client machine and assign these machines a subset of page view and corresponding user profile data
d) Write a consumer application that processes all records in both the page view and user profile topics and allow it to associate these records as needed
10. You need all messages produced with a certain key value to be written to a single topic partition. What would you do to accomplish this?
(choose one)
a) Create a producer group and configure each producer in the group to produce messages for a single key value
b) Invoke your producer in multiple threads and assign each producer to produce messages for a single key value
c) No action is necessary, the default partitioner will accomplish this
d) Configure your producer to send messages for all key values to one broker and configure that broker to redirect those messages to partitions based upon the message key value
Answers:
|
Question: 01 Answer: a, c |
Question: 02 Answer: c |
Question: 03 Answer: d |
Question: 04 Answer: b, d |
Question: 05 Answer: b |
|
Question: 06 Answer: c |
Question: 07 Answer: b |
Question: 08 Answer: c |
Question: 09 Answer: b |
Question: 10 Answer: c |
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