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| Section | Objectives |
|---|---|
| Topic 1: Kafka Ecosystem and Confluent Platform | - ksqlDB and connectors
|
| Topic 2: Kafka Fundamentals | - Kafka architecture and core concepts
|
| Topic 3: Kafka Streams and Processing | - Kafka Streams API
|
| Topic 4: Kafka Producers and Consumers | - Consumer API
|
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NEW QUESTION # 54
Which two statements are correct when assigning partitions to the consumers in a consumer group using the assign() API?
(Select two.)
Answer: C,D
Explanation:
Using assign() gives manual control over partition assignment. In this mode:
B is true: The application chooses partitions directly without involving the group coordinator.
C is true: Since no group coordination occurs, no rebalancing happens if a consumer dies.
From Kafka Consumer API Docs:
"assign() manually assigns a list of partitions to this consumer. No coordination takes place and no rebalancing is triggered." A is false: subscribe() and assign() are mutually exclusive.
D is incorrect: Partitions don't need to be equal across topics.
Reference: Kafka Consumer Java API > assign() and subscribe()
NEW QUESTION # 55
You are sending messages to a Kafka cluster in JSON format and want to add more information related to each message:
* Format of the message payload
* Message creation time
* A globally unique identifier that allows the message to be traced through the systemWhere should this additional information be set?
Answer: C
Explanation:
Kafkamessage headersare the right place to includemetadatasuch as:
* Payload format (e.g., schema version)
* Timestamps (custom)
* Trace or correlation IDs
FromKafka Producer API Docs:
"Headers are a map of key-value pairs that can be used to include metadata alongside the message, without modifying the message body."
* Keys determine partitioning and ordering
* Values are the message payload
* Brokers do not store arbitrary metadata fields
Reference:Kafka ProducerRecord API > Headers
NEW QUESTION # 56
A client connects to a broker in the cluster and sends a fetch request for a partition in a topic. It gets an exception Not Leader For Partition Exception in the response. How does client handle this situation?
Answer: B
Explanation:
In case the consumer has the wrong leader of a partition, it will issue a metadata request. The Metadata request can be handled by any node, so clients know afterwards which broker are the designated leader for the topic partitions. Produce and consume requests can only be sent to the node hosting partition leader.
NEW QUESTION # 57
There are 3 brokers in the cluster. You want to create a topic with a single partition that is resilient to one broker failure and one broker maintenance. What is the replication factor will you specify while creating the topic?
Answer: D
Explanation:
1 is not possible as it doesn't provide resilience to failure, 2 is not enough as if we take a broker down for maintenance, we cannot tolerate a broker failure, and 6 is impossible as we only have 3 brokers (RF cannot be greater than the number of brokers). Here the correct answer is 3
NEW QUESTION # 58
A producer just sent a message to the leader broker for a topic partition. The producer used acks=1 and therefore the data has not yet been replicated to followers. Under which conditions will the consumer see the message?
Answer: C
Explanation:
The high watermark is an advanced Kafka concept, and is advanced once all the ISR replicates the latest offsets. A consumer can only read up to the value of the High Watermark (which can be less than the highest offset, in the case of acks=1)
NEW QUESTION # 59
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