📊 Apache Kafka
Q. Kafka’s 'exactly-once' guarantee works best when:
  • (A) Replication is disabled
  • (B) Idempotence and transactions are enabled
  • (C) Acks=0
  • (D) Consumer lag is zero
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✅ Correct Answer: (B) Idempotence and transactions are enabled

Explanation: Exactly-once semantics are achieved using idempotent producers and transactions.

Explanation by: Mr. Dubey
Exactly-once semantics are achieved using idempotent producers and transactions.

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