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Confluent CCDAK Exam Syllabus Topics:

Section	Objectives
Kafka Producers and Consumers	- Producer API 1. Serialization and partitioning strategies 2. Reliability and acknowledgments - Consumer API 1. Rebalancing and offset commits 2. Consumer groups
Kafka Ecosystem and Confluent Platform	- Schema Registry 1. Avro, Protobuf, JSON Schema usage - ksqlDB and connectors 1. Stream querying concepts 2. Kafka Connect basics
Kafka Streams and Processing	- Event processing patterns 1. Exactly-once semantics 2. Windowing and aggregation - Kafka Streams API 1. Stateful vs stateless processing 2. Stream processing fundamentals
Kafka Fundamentals	- Kafka architecture and core concepts 1. Replication and fault tolerance 2. Brokers, topics, partitions - Data flow in Kafka 1. Offset management 2. Producer and consumer model

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Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions (Q46-Q51):

NEW QUESTION # 46
Refer to the producer code below. It features a 'Callback' class with a method called 'onCompletion()'.
In the 'on Completion*.)' method, what does the 'metadata.offset()' value represent?

producer.send(record, new MyCallback(record));

A. The number of bytes that overflowed beyond a producer batch of messages
B. Its position in the producer's batch of messages
C. The id of the partition that the message was committed to
D. The sequential id of the message is committed into a partition

Answer: D

NEW QUESTION # 47
An ecommerce website maintains two topics - a high volume "purchase" topic with 5 partitions and low volume "customer" topic with 3 partitions. You would like to do a stream-table join of these topics. How should you proceed?

A. Repartition customer topic to have 5 partitions
B. Do a KStream / KTable join after a repartition step
C. Repartition the purchase topic to have 3 partitions
D. Model customer as a GlobalKTable

Answer: D

Explanation:
In case of KStream-KStream join, both need to be co-partitioned. This restriction is not applicable in case of join with GlobalKTable, which is the most efficient here.

NEW QUESTION # 48
Kafka producers can batch messages going to the same partition.
Which statement is correct about producer batching?

A. Producers have a separate background thread for each batch.
B. Producers can only batch messages of the same size.
C. Producers can include multiple batches in a single request to a broker.
D. Two or more broker failures will automatically disable batching on the producer.

Answer: C

Explanation:
Kafka producers can group messages destined for different partitions into separate batches, and send multiple batches in one request to optimize network usage.
From Kafka Producer Internals:
"The producer maintains buffers (batches) for each partition and can send multiple of these batches together in a single request to the broker." Message size is not a constraint for batching (A is false).
Broker failures don't disable batching (B is false).
There is no separate thread per batch (C is false).
Reference: Kafka Producer Architecture and Internals

NEW QUESTION # 49
You want to connect with username and password to a secured Kafka cluster that has SSL encryption.
Which properties must your client include?

A. security.protocol=SASL_PLAINTEXTsasl.jaas.config=org.apache.kafka.common.security.plain.
PlainLoginModule required username='myUser' password='myPassword';
B. security.protocol=SASL_SSLsasl.jaas.config=org.apache.kafka.common.security.plain.
PlainLoginModule required username='myUser' password='myPassword';
C. security.protocol=PLAINTEXTsasl.jaas.config=org.apache.kafka.common.security.ssl.
TlsLoginModule required username='myUser' password='myPassword';
D. security.protocol=SSLsasl.jaas.config=org.apache.kafka.common.security.plain.PlainLoginModule required username='myUser' password='myPassword';

Answer: B

Explanation:
For SASL/PLAIN authentication over SSL, the correct combination is:
security.protocol=SASL_SSL
sasl.jaas.config=...PlainLoginModule required username=... password=...
From Kafka Security Documentation:
"For SASL/PLAIN over SSL, configure security.protocol=SASL_SSL and provide login module configuration using sasl.jaas.config." Options B and D are incorrect because they do not pair the correct protocol with the authentication method.
Reference: Apache Kafka Security Configs > SASL_SSL, PLAIN mechanism

NEW QUESTION # 50
You are building a system for a retail store to sell products to customers Which dataset should be modeled as a GlobatKTable? (Choose 3.)

A. All purchases at a retail store occurring in real time
B. Inventory of products at a warehouse e.g 100 items left
C. Customer profile information
D. Log of payment transactions
E. Catalog of products

Answer: B,D,E

NEW QUESTION # 51
......

The Confluent Certified Developer for Apache Kafka Certification Examination (CCDAK) certification is a valuable credential that every Confluent professional should earn it. The Confluent CCDAK certification exam offers a great opportunity for beginners and experienced professionals to demonstrate their expertise. With the Confluent Certified Developer for Apache Kafka Certification Examination (CCDAK) certification exam everyone can upgrade their skills and knowledge. There are other several benefits that the CCDAK Exam holders can achieve after the success of the Confluent Certified Developer for Apache Kafka Certification Examination (CCDAK) certification exam. However, you should keep in mind to pass the Confluent CCDAK certification exam is not an easy task. It is a challenging job.

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