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Confluent CCDAK Exam Questions
- Topic 1: Kafka Architecture: This section explores the fundamental elements of Kafka's ecosystem such as the roles played by producers, consumers, and brokers. It also covers role of Zookeeper in the Kafka landscape.
- Topic 2: Developing with Kafka: This section covers crafting applications that leverage Kafka's capabilities. This covers the implementation of producers for sending data and consumers for receiving it. Also includes techniques for converting data between different formats during transmission and reception.
- Topic 3: Monitoring and Troubleshooting: Implementing systems to oversee Kafka cluster health and performance. Learning to recognize and resolve typical challenges that arise in Kafka deployments.
- Topic 4: Security: This section deploys protective strategies for Kafka clusters. It includes ways to authenticate users and oversee the access permissions.
Free Confluent CCDAK Exam Actual Questions
Note: Premium Questions for CCDAK were last updated On Jan. 26, 2025 (see below)
In Avro, adding an element to an enum without a default is a __ schema evolution
Since Confluent 5.4.0, Avro 1.9.1 is used. Since default value was added to enum complex type , the schema resolution changed from:
(<1.9.1) if both are enums:** if the writer's symbol is not present in the reader's enum, then an error is signalled. **(>=1.9.1) if both are enums:
if the writer's symbol is not present in the reader's enum and the reader has a default value, then that value is used, otherwise an error is signalled.
To continuously export data from Kafka into a target database, I should use
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.
In Avro, adding an element to an enum without a default is a __ schema evolution
Since Confluent 5.4.0, Avro 1.9.1 is used. Since default value was added to enum complex type , the schema resolution changed from:
(<1.9.1) if both are enums:** if the writer's symbol is not present in the reader's enum, then an error is signalled. **(>=1.9.1) if both are enums:
if the writer's symbol is not present in the reader's enum and the reader has a default value, then that value is used, otherwise an error is signalled.
How much should be the heap size of a broker in a production setup on a machine with 256 GB of RAM, in PLAINTEXT mode?
In Kafka, a small heap size is needed, while the rest of the RAM goes automatically to the page cache (managed by the OS). The heap size goes slightly up if you need to enable SSL
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?
tick time is 2000 ms, and initLimit is the config taken into account when establishing a connection to Zookeeper, so the answer is 2000 * 20 = 40000 ms = 40s
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