Question 1

Which of the following defines HOPPING operation correctly from a KSQL perspective?

Options :

A : Fixed-sized, (possibly) overlapping windows based on the record’s timestamps

B : fixed-sized, non-overlapping windows based on the record-s timestamps

C : Takes one record and produces zero, one, or more records. You can modify the record keys and values, including their types.

D : Sessions with a period of activity and gaps in between

Answer: A

Question 2

while (true) {
ConsumerRecords< String, String > records = consumer.poll(100);
try {
consumer.commitSync();
} catch (CommitFailedException e) {
log.error('commit failed', e)
}
for (ConsumerRecord< String, String > record records)
{
System.out.printf('topic = %s, partition = %s, offset =
%d, customer = %s, country = %s
',
record.topic(), record.partition(),
record.offset(), record.key(), record.value());
}
}
What kind of delivery guarantee this consumer offers?

Options :

A : Exactly-once

B : At-least-once

C : At-most-once

Answer: C

Question 3

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

Options :

A : 9092

B : 8088

C : 8083

D : 2181

Answer: B

Question 4

Which statement is/are true?

Options :

A : Kafkacat is supported by a confluent platform.

B : Kafkacat is an alternative to kafka-console-producer and kafka-console-consumer.

C : Kafkacat is an API framework.

D : Kafkacat is a command-line utility.

Answer: D

Question 5

In a KafkaProducer program our send() was configured with a callback onCompletion. The send was called and the callback parameters has RecordMetadata object that was null. What does this tell us about send method:

Options :

A : Object metadata being null means there was an error during send

B : Object metadata being null means the transfer was successful

C : Object metadata being null is not enough information to determine if transfer was successful or not

Answer: A

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