Free CCDAK Exam Dumps

Question 16

When is the onCompletion() method called?
private class ProducerCallback implements Callback {
@Override
public void onCompletion(RecordMetadata recordMetadata, Exception e) { if (e != null) {

A. e.printStackTrace();}}}ProducerRecord<String, String> record =new ProducerRecord<>("topic1", "key1", "value1"); producer.send(record, new ProducerCallback());
B. When the message is partitioned and batched successfully
C. When message is serialized successfully
D. When the broker response is received
E. When send() method is called

Correct Answer:C
Callback is invoked when a broker response is received.

Question 17

You want to send a message of size 3 MB to a topic with default message size configuration. How does KafkaProducer handle large messages?

A. KafkaProducer divides messages into sizes of max.request.size and sends them in order
B. KafkaProducer divides messages into sizes of message.max.bytes and sends them in order
C. MessageSizeTooLarge exception will be thrown, KafkaProducer will not retry and return exception immediately
D. MessageSizeTooLarge exception will be thrown, KafkaProducer retries until the number of retries are exhausted

Correct Answer:C
MessageSizeTooLarge is not a retryable exception.

Question 18

An ecommerce wesbite sells some custom made goods. What's the natural way of modeling this data in Kafka streams?

A. Purchase as stream, Product as stream, Customer as stream
B. Purchase as stream, Product as table, Customer as table
C. Purchase as table, Product as table, Customer as table
D. Purchase as stream, Product as table, Customer as stream

Correct Answer:B
Mostly-static data is modeled as a table whereas business transactions should be modeled as a stream.

Question 19

To read data from a topic, the following configuration is needed for the consumers

A. all brokers of the cluster, and the topic name
B. any broker to connect to, and the topic name
C. the list of brokers that have the data, the topic name and the partitions list
D. any broker, and the list of topic partitions

Correct Answer:B
All brokers can respond to Metadata request, so a client can connect to any broker in the cluster.

Question 20

What is the default port that the KSQL server listens on?

A. 9092
B. 8088
C. 8083
D. 2181

Correct Answer:B
Default port of KSQL server is 8088