Latest PDF of CCDAK: Confluent Certified Developer for Apache Kafka

Confluent Certified Developer for Apache Kafka Practice Test

CCDAK test Format | Course Contents | Course Outline | test Syllabus | test Objectives

Title: Confluent Certified Developer for Apache Kafka (CCDAK)

Test Detail:
The CCDAK (Confluent Certified Developer for Apache Kafka) is a professional certification offered by Confluent, the company behind Apache Kafka. It validates the knowledge and skills of developers in designing, developing, and implementing Apache Kafka-based solutions. The certification demonstrates expertise in building real-time streaming applications using Kafka.

Course Outline:
The CCDAK certification program covers a comprehensive range of Topics related to Apache Kafka development. The course provides participants with a solid foundation in Kafka concepts, architecture, and application development. The following is a general outline of the key areas covered in the CCDAK certification program:

1. Introduction to Apache Kafka:
- Kafka architecture and components
- Kafka topics, partitions, and offsets
- Kafka brokers and clusters
- Producers and consumers
- Kafka Connect and Kafka Streams

2. Kafka Core APIs:
- Producer API
- Consumer API
- Kafka Streams API
- Admin API
- Schema Registry API

3. Kafka Data Serialization:
- Avro schema evolution and compatibility
- JSON and binary data serialization
- Kafka message headers
- Serializers and deserializers
- Apache Kafka and Confluent schema registry

4. Kafka Streams Processing:
- Stream processing fundamentals
- Stream processing topologies
- Stateful and stateless operations
- Windowed operations
- Interactive queries

5. Kafka Connect and Integration:
- Kafka Connect architecture
- Connectors and transformations
- Sinks and sources
- Connect REST API
- Integration with external systems

Exam Objectives:
The CCDAK certification test assesses candidates' understanding of Apache Kafka concepts, programming techniques, and best practices. The test objectives include, but are not limited to:

1. Demonstrating knowledge of Kafka architecture and components.
2. Implementing Kafka producers and consumers using the core APIs.
3. Developing real-time stream processing applications with Kafka Streams.
4. Configuring and managing Kafka Connect for data integration.
5. Understanding data serialization and compatibility using Avro and JSON.
6. Applying best practices for scalability, fault tolerance, and performance.
7. Troubleshooting and debugging Kafka applications.

Syllabus:
The CCDAK certification program typically spans a multi-day training course or self-paced online learning modules. The syllabus provides a breakdown of the Topics covered throughout the course, including specific learning objectives and milestones. The syllabus may include the following components:

- Introduction to Apache Kafka
- Kafka Core APIs and Application Development
- Kafka Data Serialization and Schema Registry
- Kafka Streams Processing and Real-time Analytics
- Kafka Connect and Integration with External Systems
- Best Practices and Advanced Topics
- test Preparation and Mock Tests
- Final CCDAK Certification Exam

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Confluent
CCDAK
Confluent Certified Developer for Apache Kafka
https://killexams.com/pass4sure/exam-detail/CCDAK
Question: 51
is KSQL ANSI SQL compliant?
A. Yes
B. No
Answer: B
Explanation:
KSQL is not ANSI SQL compliant, for now there are no defined standards on streaming SQL languages
Question: 52
Question: 53
A Zookeeper ensemble contains 3 servers.
Over which ports the members of the ensemble should be able to communicate in default configuration? (select three)
A. 2181
B. 3888
C. 443
D. 2888
E. 9092
F. 80
Answer: A,B,D
Explanation:
2181 � client port, 2888 � peer port, 3888 � leader port
Question: 54
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 data .
How can you Excellerate dramatically the application restart?
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
Answer: A
Explanation:
Although any Kafka Streams application is stateless as the state is stored in Kafka, it can take a while and lots of
resources to recover the state from Kafka. In order to speed up recovery, it is advised to store the Kafka Streams state
on a persistent volume, so that only the missing part of the state needs to be recovered.
Question: 55
A producer is sending messages with null key to a subject with 6 partitions using the DefaultPartitioner. Where will the
messages be stored?
A. Partition 5
B. Any of the subject partitions
C. The partition for the null key
D. Partition 0
Answer: A
Explanation:
Message with no keys will be stored with round-robin strategy among partitions.
Question: 56
A kafka subject has a replication factor of 3 and min.insync.replicas setting of 2 .
How many brokers can go down before a producer with acks=all can�t produce?
A. 0
B. 2
C. 1
D. 3
Answer: C
Explanation:
acks=all and min.insync.replicas=2 means we must have at least 2 brokers up for the partition to be available
Question: 57
How can you gracefully make a Kafka consumer to stop immediately polling data from Kafka and gracefully shut
down a consumer application?
A. Call consumer.wakeUp() and catch a WakeUpException
B. Call consumer.poll() in another thread
C. Kill the consumer thread
Answer: A
Explanation:
See https://stackoverflow.com/a/37748336/3019499
Question: 58
A Zookeeper ensemble contains 5 servers .
What is the maximum number of servers that can go missing and the ensemble still run?
A. 3
B. 4
C. 2
D. 1
Answer: C
Explanation:
majority consists of 3 zk nodes for 5 nodes zk cluster, so 2 can fail
Question: 59
You have a Kafka cluster and all the Topics have a replication factor of 3. One intern at your company stopped a
broker, and accidentally deleted all the data of that broker on the disk .
What will happen if the broker is restarted?
A. The broker will start, and other Topics will also be deleted as the broker data on the disk got deleted
B. The broker will start, and won�t be online until all the data it needs to have is replicated from other leaders
C. The broker will crash
D. The broker will start, and won�t have any data. If the broker comes leader, we have a data loss
Answer: B
Explanation:
Kafka replication mechanism makes it resilient to the scenarios where the broker lose data on disk, but can recover
from replicating from other brokers. This makes Kafka amazing!
Question: 60
In the Kafka consumer metrics it is observed that fetch-rate is very high and each fetch is small .
What steps will you take to increase throughput?
A. Increase fetch.max.wait
B. Increase fetch.max.bytes
C. Decrease fetch.max.bytes
D. Decrease fetch.min.bytes
E. Increase fetch.min.bytes
Answer: E
Explanation:
This will allow consumers to wait and receive more bytes in each fetch request.

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