Free CCDAK Exam Dumps

Question 41

In Java, Avro SpecificRecords classes are

A. automatically generated from an Avro Schema
B. written manually by the programmer
C. automatically generated from an Avro Schema + a Maven / Gradle Plugin

Correct Answer:C
SpecificRecord is created from generated record classes

Question 42

A topic "sales" is being produced to in the Americas region. You are mirroring this topic using Mirror Maker to the European region. From there, you are only reading the topic for analytics purposes. What kind of mirroring is this?

A. Passive-Passive
B. Active-Active
C. Active-Passive

Correct Answer:C
This is active-passing as the replicated topic is used for read-only purposes only

Question 43

What is returned by a producer.send() call in the Java API?

A. Future<ProducerRecord> object
B. A Boolean indicating if the call succeeded
C. Future object
D. Unit

Correct Answer:C
Seehttps://kafka.apache.org/21/javadoc/org/apache/kafka/clients/producer/KafkaProducer. html

Question 44

A consumer wants to read messages from a specific partition of a topic. How can this be achieved?

A. Call subscribe(String topic, int partition) passing the topic and partition number as the arguments
B. Call assign() passing a Collection of TopicPartitions as the argument
C. Call subscribe() passing TopicPartition as the argument

Correct Answer:B
assign() can be used for manual assignment of a partition to a consumer, in which case subscribe() must not be used. Assign() takes a collection of TopicPartition object as an argument https://kafka.apache.org/23/javadoc/org/apache/kafka/clients/consumer/KafkaConsumer.ht
ml#assign-java.util.Collection-

Question 45

Once sent to a topic, a message can be modified

A. No
B. Yes

Correct Answer:A
Kafka logs are append-only and the data is immutable