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Confluent Certified Developer for Apache Kafka Certification Examination

Last Update 1 day ago
Total Questions : 150

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Question # 1

A kafka topic has a replication factor of 3 and min.insync.replicas setting of 1. What is the maximum number of brokers that can be down so that a producer with acks=all can still produce to the topic?

Options:

A.  

3

B.  

0

C.  

2

D.  

1

Discussion 0
Question # 2

You are using JDBC source connector to copy data from 2 tables to two Kafka topics. There is one connector created with max.tasks equal to 2 deployed on a cluster of 3 workers. How many tasks are launched?

Options:

A.  

6

B.  

1

C.  

2

D.  

3

Discussion 0
Question # 3

A customer has many consumer applications that process messages from a Kafka topic. Each consumer application can only process 50 MB/s. Your customer wants to achieve a target throughput of 1 GB/s. What is the minimum number of partitions will you suggest to the customer for that particular topic?

Options:

A.  

10

B.  

20

C.  

1

D.  

50

Discussion 0
Question # 4

Select all that applies (select THREE)

Options:

A.  

min.insync.replicas is a producer setting

B.  

acks is a topic setting

C.  

acks is a producer setting

D.  

min.insync.replicas is a topic setting

E.  

min.insync.replicas matters regardless of the values of acks

F.  

min.insync.replicas only matters if acks=all

Discussion 0
Question # 5

A Zookeeper configuration has tickTime of 2000, initLimit of 20 and syncLimit of 5. What's the timeout value for followers to connect to Zookeeper?

Options:

A.  

20 sec

B.  

10 sec

C.  

2000 ms

D.  

40 sec

Discussion 0
Question # 6

To prevent network-induced duplicates when producing to Kafka, I should use

Options:

A.  

max.in.flight.requests.per.connection=1

B.  

enable.idempotence=true

C.  

retries=200000

D.  

batch.size=1

Discussion 0
Question # 7

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

Options:

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

Discussion 0
Question # 8

In Avro, removing or adding a field that has a default is a __ schema evolution

Options:

A.  

full

B.  

backward

C.  

breaking

D.  

forward

Discussion 0
Question # 9

Once sent to a topic, a message can be modified

Options:

A.  

No

B.  

Yes

Discussion 0
Question # 10

Which actions will trigger partition rebalance for a consumer group? (select three)

Options:

A.  

Increase partitions of a topic

B.  

Remove a broker from the cluster

C.  

Add a new consumer to consumer group

D.  

A consumer in a consumer group shuts down

Add a broker to the cluster

Discussion 0
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