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Which technology enables distributed stream processing with exactly-once semantics?

  1. Apache Kafka
  2. Apache Flink
  3. Apache Spark Streaming
  4. All of these

Answer: All of these

Kafka (messaging), Flink (stream processing), Spark Streaming (micro-batch) enable real-time analytics with varying consistency guarantees.

Topic Data Engineering: Real-time Streaming
Exam Relevance Banking, SSC JE, UPSC

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