confluent ccdak practice test

What client protocol is supported for the schema registry? (select two)

• A. HTTP
• B. HTTPS
• C. JDBC
• D. Websocket
• E. SASL

If I produce to a topic that does not exist, and the broker setting auto.create.topic.enable=true, what
will happen?

• A. Kafka will automatically create the topic with 1 partition and 1 replication factor
• B. Kafka will automatically create the topic with the indicated producer settings num.partitions and default.replication.factor
• C. Kafka will automatically create the topic with the broker settings num.partitions and default.replication.factor
• D. Kafka will automatically create the topic with num.partitions=#of brokers and replication.factor=3

You want to perform table lookups against a KTable everytime a new record is received from the
KStream. What is the output of KStream-KTable join?

• A. KTable
• B. GlobalKTable
• C. You choose between KStream or KTable
• D. Kstream

Using the Confluent Schema Registry, where are Avro schema stored?

• A. In the Schema Registry embedded SQL database
• B. In the Zookeeper node /schemas
• C. In the message bytes themselves
• D. In the _schemas topic

Which of the following setting increases the chance of batching for a Kafka Producer?

• A. Increase batch.size
• B. Increase message.max.bytes
• C. Increase the number of producer threads
• D. Increase linger.ms

You have a Kafka cluster and all the topics have a replication factor of 3. One intern at your company
stopped a broker, and accidentally deleted all the data of that broker on the disk. What will happen if
the broker is restarted?

• A. The broker will start, and other topics will also be deleted as the broker data on the disk got deleted
• B. The broker will start, and won't be online until all the data it needs to have is replicated from other leaders
• C. The broker will crash
• D. The broker will start, and won't have any data. If the broker comes leader, we have a data loss

Select all that applies (select THREE)

• A. min.insync.replicas is a producer setting
• B. acks is a topic setting
• C. acks is a producer setting
• D. min.insync.replicas is a topic setting
• E. min.insync.replicas matters regardless of the values of acks
• F. min.insync.replicas only matters if acks=all

A customer has many consumer applications that process messages from a Kafka topic. Each
consumer application can only process 50 MB/s. Your customer wants to achieve a target throughput
of 1 GB/s. What is the minimum number of partitions will you suggest to the customer for that
particular topic?

• A. 10
• B. 20
• C. 1
• D. 50

Your producer is producing at a very high rate and the batches are completely full each time. How
can you improve the producer throughput? (select two)

• A. Enable compression
• B. Disable compression
• C. Increase batch.size
• D. Decrease batch.size
• E. Decrease linger.ms Increase linger.ms

In Avro, adding a field to a record without default is a __ schema evolution

• A. forward
• B. backward
• C. full
• D. breaking