Kafka

In Kafka records are published to:

• A Category

• A Subject

• A Topic

• A Table

A Kafka record is uniquely identified within the Partition by its:

• Primary Key

• Timestamp

• Offset

• Identifier

Which statement about Kafka topics is true?

• Only a single producer can write data to a topic

• Only a single consumer can subscribe to the data written to a topic

• Multiple consumers can subscribe to the data written to a topic

• A consumer can insert data into any position within a topic

Which statement about the lifetime of a Kafka record is true?

• After a record is consumed, it becomes invisible to other Consumers for a defined invisibility period

• A record is persisted until the defined retention period

• A Consumer must delete processed records to prevent reprocessing

• A Consumer must move the record to an internal topic for deletion

Which setting of a Kafka Topic enables automatic failover when a server in the cluster fails?

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  Compression type

• Segment index bytes

• Partition count

• Replication factor

With the default settings of a Kafka Producer, which part of a record is used to determine its target Partition within the topic?

• Record key

• Record value

• Header key

• Record TImestamp

Given the requirement to stream every record in a Kafka Topic to Elasticsearch for a search index, which technology would provide a scalable and reliable solution with no custom coding?

• Producer API

• Consumer API

• Kafka Streams

• Kafka Connect

Which assignment of Partitions to Consumers in a Consumer Group is impossible when using default configurations?

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Suppose Consumer c1 has just consumed message m1. Suppose Consumer c2 wants to consume m1 soon after. Assuming c1 and c2 are in different Consumer groups, which of the following is true?

• Since m1 was consumed, it's no longer in the cluster, so it's impossible for c2 at this point

• Consumer c2 can consume m1 just like c1 did

• Since c1 had consumed m1 and advanced a Consumer offset, m1 is positioned beyond the offset where it can be consumed

• None of the above

Suppose a Producer has written a message to Kafka. That message can be changed:

• Anytime, by any Producer

• Only by the Producer who sent it to Kafka

• Only to change its metadata

• Never