Confluent CCDAK Exam Practice Test Instant Access

Question 1

To continuously export data from Kafka into a target database, I should use

AKafka Producer

BKafka Streams

CKafka Connect Sink

DKafka Connect Source

Answer : C

Kafka Connect Sink is used to export data from Kafka to external databases and Kafka Connect Source is used to import from external databases into Kafka.

Question 2

Which of the following is not an Avro primitive type?

Astring

Blong

Cint

Ddate

Enull

Answer : D

date is a logical type

Question 3

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

APurchase as stream, Product as stream, Customer as stream

BPurchase as stream, Product as table, Customer as table

CPurchase as table, Product as table, Customer as table

DPurchase as stream, Product as table, Customer as stream

Answer : B

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

Question 4

How do you create a topic named test with 3 partitions and 3 replicas using the Kafka CLI?

Abin/kafka-topics.sh --create --broker-list localhost:9092 --replication-factor 3 --partitions 3 --topic test

Bbin/kafka-topics-create.sh --zookeeper localhost:9092 --replication-factor 3 --partitions 3 --topic test

Cbin/kafka-topics.sh --create --bootstrap-server localhost:9092 --replication-factor 3 --partitions 3 --topic test

Dbin/kafka-topics.sh --create --bootstrap-server localhost:2181 --replication-factor 3 --partitions 3 --topic test

Answer : C

As of Kafka 2.3, the kafka-topics.sh command can take --bootstrap-server localhost:9092 as an argument. You could also use the (now deprecated) option of --zookeeper localhost:2181.

Question 5

Your streams application is reading from an input topic that has 5 partitions. You run 5 instances of your application, each with num.streams.threads set to 5. How many stream tasks will be created and how many will be active?

A5 created, 1 active

B5 created, 5 active

C25 created, 25 active

D25 created, 5 active

Answer : D

One partition is assigned a thread, so only 5 will be active, and 25 threads (i.e. tasks) will be created

Question 6

A kafka topic has a replication factor of 3 and min.insync.replicas setting of 2. How many brokers can go down before a producer with acks=1 can't produce?

Answer : D

min.insync.replicas does not impact producers when acks=1 (only when acks=all)

Question 7

What are the requirements for a Kafka broker to connect to a Zookeeper ensemble? (select two)

AUnique value for each broker's zookeeper.connect parameter

BUnique values for each broker's broker.id parameter

CAll the brokers must share the same broker.id

DAll the brokers must share the same zookeeper.connect parameter

Answer : B, D

Each broker must have a unique broker id and connect to the same zk ensemble and root zNode

Confluent Certified Developer for Apache Kafka Exam Practice Test