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Guide for Confluent Certified Developer for Apache Kafka Certification Examination

Quiz Confluent Certified Developer for Apache Kafka Certification Examination

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/ 10

Quiz

1/10
Where are the ACLs stored in a Kafka cluster by default?
Select the answer
1 correct answer
A.
Inside the broker's data directory
B.
Under Zookeeper node /kafka-acl/
C.
In Kafka topic kafka_acls
D.
Inside the Zookeeper's data directory

Quiz

2/10
Is KSQL ANSI SQL compliant?
Select the answer
1 correct answer
A.
Yes
B.
No

Quiz

3/10
What information isn't stored inside of Zookeeper? (select two)
Select the answer
1 correct answer
A.
Schema Registry schemas
B.
Consumer offset
C.
ACL inforomation
D.
Controller registration
E.
Broker registration info

Quiz

4/10
Which KSQL queries write to Kafka?
Select the answer
2 correct answers
A.
COUNT and JOIN
B.
SHOW STREAMS and EXPLAIN <query> statements
C.
CREATE STREAM WITH <topic> and CREATE TABLE WITH <topic>
D.
CREATE STREAM AS SELECT and CREATE TABLE AS SELECT

Quiz

5/10
There are two consumers C1 and C2 belonging to the same group G subscribed to topics T1 and T2.
Each of the topics has 3 partitions. How will the partitions be assigned to consumers with Partition
Assigner being Round Robin Assigner?
Select the answer
1 correct answer
A.
C1 will be assigned partitions 0 and 2 from T1 and partition 1 from T2. C2 will have partition 1
from T1 and partitions 0 and 2 from T2.
B.
Two consumers cannot read from two topics at the same time
C.
C1 will be assigned partitions 0 and 1 from T1 and T2, C2 will be assigned partition 2 from T1 and
T2.
D.
All consumers will read from all partitions

Quiz

6/10
A client connects to a broker in the cluster and sends a fetch request for a partition in a topic. It gets
an exception Not Leader For Partition Exception in the response. How does client handle this
situation?
Select the answer
1 correct answer
A.
Get the Broker id from Zookeeper that is hosting the leader replica and send request to it
B.
Send metadata request to the same broker for the topic and select the broker hosting the leader
replica
C.
Send metadata request to Zookeeper for the topic and select the broker hosting the leader replica
D.
Send fetch request to each Broker in the cluster

Quiz

7/10
What is the risk of increasing max.in.flight.requests.per.connection while also enabling retries in a
producer?
Select the answer
1 correct answer
A.
At least once delivery is not guaranteed
B.
Message order not preserved
C.
Reduce throughput
D.
Less resilient

Quiz

8/10
A Kafka producer application wants to send log messages to a topic that does not include any key.
What are the properties that are mandatory to configure for the producer configuration? (select
three)
Select the answer
3 correct answers
A.
bootstrap.servers
B.
partition
C.
key.serializer
D.
value.serializer
E.
key
F.
value

Quiz

9/10
To import data from external databases, I should use
Select the answer
1 correct answer
A.
Confluent REST Proxy
B.
Kafka Connect Sink
C.
Kafka Streams
D.
Kafka Connect Source

Quiz

10/10
You are running a Kafka Streams application in a Docker container managed by Kubernetes, and upon
application restart, it takes a long time for the docker container to replicate the state and get back to
processing the dat
a. How can you improve dramatically the application restart?
Select the answer
1 correct answer
A.
Mount a persistent volume for your RocksDB
B.
Increase the number of partitions in your inputs topic
C.
Reduce the Streams caching property
D.
Increase the number of Streams threads
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  • Quiz name:Confluent Certified Developer for Apache Kafka Certification Examination
  • Total number of questions:150
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  • Pass score:80%

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