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| Section | Objectives |
|---|---|
| Kafka Ecosystem and Confluent Platform | - Schema Registry
|
| Kafka Streams and Processing | - Event processing patterns
|
| Kafka Fundamentals | - Kafka architecture and core concepts
|
| Kafka Producers and Consumers | - Producer API
|
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NEW QUESTION # 22
Which of these joins does not require input topics to be sharing the same number of partitions?
Answer: C
Explanation:
GlobalKTables have their datasets replicated on each Kafka Streams instance and therefore no repartitioning is required
NEW QUESTION # 23
You have a consumer group with default configuration settings reading messages from your Kafka cluster.
You need to optimize throughput so the consumer group processes more messages in the same amount of time.
Which change should you make?
Answer: A
Explanation:
To increase consumerthroughput, one effective strategy is toincrease the amount of datafetched in each poll by raisingfetch.max.bytesormax.partition.fetch.bytes. This allows each poll to retrieve more records per request, improving processing efficiency.
FromKafka Consumer Config Docs:
"Increasing fetch size allows consumers to retrieve larger batches of messages, improving throughput and reducing request overhead."
* Removing consumers (A) may reduce parallelism.
* Manual commit (C) adds complexity, not throughput.
* Decreasing session timeout (D) risks unnecessary rebalances.
Reference:Kafka Consumer Configuration > fetch.max.bytes
NEW QUESTION # 24
A Zookeeper ensemble contains 3 servers. Over which ports the members of the ensemble should be able to communicate in default configuration? (select three)
Answer: C,D,F
Explanation:
2181 - client port, 2888 - peer port, 3888 - leader port
NEW QUESTION # 25
In Avro, adding an element to an enum without a default is a __ schema evolution
Answer: C
Explanation:
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.
NEW QUESTION # 26
You are writing a producer application and need to ensure proper delivery. You configure the producer with acks=all.
Which two actions should you take to ensure proper error handling?
(Select two.)
Answer: B,D
Explanation:
For proper delivery handling with acks=all:
* Usecallbackto log or act on success/failure.
* Usetry/catchto handle synchronous exceptions like serialization errors or network failures.
FromKafka Producer Documentation:
"Errors can be caught either via the returned Future<RecordMetadata> or via the callback interface. For fatal errors, use a try/catch block around the send call." Option B is incorrect because send() returns a Future, not RecordMetadata directly.
Option D is invalid - ProducerRecord has no method called status().
Reference:Kafka Producer Error Handling and Callback APIs
NEW QUESTION # 27
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