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| Section | Objectives |
|---|---|
| Kafka Fundamentals | - Kafka architecture and core concepts
|
| Kafka Streams and Processing | - Kafka Streams API
|
| Kafka Ecosystem and Confluent Platform | - Schema Registry
|
| Kafka Producers and Consumers | - Producer API
|
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NEW QUESTION # 20
If I want to have an extremely high confidence that leaders and replicas have my data, I should use
Answer: A
Explanation:
acks=all means the leader will wait for all in-sync replicas to acknowledge the record. Also the min in-sync replica setting specifies the minimum number of replicas that need to be in-sync for the partition to remain available for writes.
NEW QUESTION # 21
The kafka-console-consumer CLI, when used with the default options
Answer: B
Explanation:
If a group is not specified, the kafka-console-consumer generates a random consumer group.
NEW QUESTION # 22
Suppose you have 6 brokers and you decide to create a topic with 10 partitions and a replication factor of 3.
The brokers 0 and 1 are on rack A, the brokers 2 and 3 are on rack B, and the brokers 4 and 5 are on rack C.
If the leader for partition 0 is on broker 4, and the first replica is on broker 2, which broker can host the last replica? (select two)
Answer: A,E
Explanation:
When you create a new topic, partitions replicas are spreads across racks to maintain availability. Hence, the Rack A, which currently does not hold the topic partition, will be selected for the last replica
NEW QUESTION # 23
In Avro, removing a field that does not have a default is a __ schema evolution
Answer: D
Explanation:
Clients with new schema will be able to read records saved with old schema.
NEW QUESTION # 24
(You are building real-time streaming applications using Kafka Streams.
Your application has a custom transformation.
You need to define custom processors in Kafka Streams.
Which tool should you use?)
Answer: D
Explanation:
The Apache Kafka Streams documentation clearly distinguishes between the Kafka Streams DSL and the Processor API. While the DSL is designed for common stream processing operations such as filtering, mapping, joining, and aggregations, it does not support fully custom processing logic.
For use cases that require custom transformations, fine-grained control over record processing, access to headers, timestamps, state stores, and punctuation, Kafka Streams provides the Processor API. This API allows developers to implement custom Processor, Transformer, or ValueTransformer classes and explicitly define the processing topology.
Option A (TopologyTestDriver) is a testing utility, not a development API. Option C (DSL) is higher-level and not suitable for advanced custom logic. Option D does not exist in Kafka.
Therefore, the correct and officially supported approach for defining custom processors in Kafka Streams is to use the Processor API.
NEW QUESTION # 25
......
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