How will you find out all the partitions without a leader?

• A.kafka-topics.sh --broker-list localhost:9092 --describe --under-replicated-partitions
• B.kafka-topics.sh --bootstrap-server localhost:2181 --describe --unavailable-partitions
• C.kafka-topics.sh --zookeeper localhost:2181 --describe --unavailable-partitions
• D.kafka-topics.sh --zookeeper localhost:2181 --describe --under-replicated-partitions

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A kafka topic has a replication factor of 3 and min.insync.replicas setting of 2. How many brokers can go down before a producer with acks=all can't produce?

• A.0
• B.2
• C.1
• D.3

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A consumer is configured with enable.auto.commit=false. What happens when close() is called on the consumer object?

• A.The uncommitted offsets are committed
• B.A rebalance in the consumer group will happen immediately
• C.The group coordinator will discover that the consumer stopped sending heartbeats. It will cause rebalance after session.timeout.ms

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Which of the following is true regarding thread safety in the Java Kafka Clients?

• A.One Producer can be safely used in multiple threads
• B.One Consumer can be safely used in multiple threads
• C.One Consumer needs to run in one thread
• D.One Producer needs to be run in one thread

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The exactly once guarantee in the Kafka Streams is for which flow of data?

• A.Kafka => Kafka
• B.Kafka => External
• C.External => Kafka

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