Data ETL Batch vs Streaming MCQ Questions with Answers (Latest 2026)
Practice Data ETL Batch vs Streaming MCQ questions with detailed explanations and clear answer validation. These MCQs help you revise core concepts, compare close options, and improve accuracy for interviews, certification exams, and technical screening rounds. Use this updated 2026 set to strengthen fundamentals and confidence.
Answer: Process bounded chunks of data on schedule.
Here, Process bounded chunks of data on schedule. is the right choice. Higher throughput, higher latency. It aligns directly with what the question asks about which option best describes batch processing. A quick elimination of partially true options helps confirm it.
Q2. What is the primary purpose of batch processing?
Select an answer to check.
Answer: Process bounded chunks of data on schedule.
In this case, Process bounded chunks of data on schedule. is correct. Higher throughput, higher latency. It aligns directly with what the question asks about what is the primary purpose of batch processing. A quick elimination of partially true options helps confirm it.
Q3. Which statement about batch processing is most accurate?
Select an answer to check.
Answer: Process bounded chunks of data on schedule.
The best option here is Process bounded chunks of data on schedule.. Higher throughput, higher latency. It aligns directly with what the question asks about which statement about batch processing is most accurate. A quick elimination of partially true options helps confirm it.
Q4. How is batch processing best characterized?
Select an answer to check.
Answer: Process bounded chunks of data on schedule.
For this question, Process bounded chunks of data on schedule. is correct. Higher throughput, higher latency. It aligns directly with what the question asks about how is batch processing best characterized. A quick elimination of partially true options helps confirm it.
Q5. Which option best describes stream processing?
Select an answer to check.
Answer: Process events as they arrive.
Process events as they arrive. is the correct answer here. Low latency, more complex. It aligns directly with what the question asks about which option best describes stream processing. A quick elimination of partially true options helps confirm it.
Q6. What is the primary purpose of stream processing?
Select an answer to check.
Answer: Process events as they arrive.
Here, Process events as they arrive. is the right choice. Low latency, more complex. This matches the core idea being tested around what is the primary purpose of stream processing. A quick elimination of partially true options helps confirm it.
Q7. Which statement about stream processing is most accurate?
Select an answer to check.
Answer: Process events as they arrive.
In this case, Process events as they arrive. is correct. Low latency, more complex. This matches the core idea being tested around which statement about stream processing is most accurate. A quick elimination of partially true options helps confirm it.
Q8. How is stream processing best characterized?
Select an answer to check.
Answer: Process events as they arrive.
The best option here is Process events as they arrive.. Low latency, more complex. This matches the core idea being tested around how is stream processing best characterized. A quick elimination of partially true options helps confirm it.
Q9. Which option best describes micro-batch?
Select an answer to check.
Answer: Frequent small batches (near-streaming).
For this question, Frequent small batches (near-streaming). is correct. Spark Structured Streaming. This matches the core idea being tested around which option best describes micro-batch. A quick elimination of partially true options helps confirm it.
Q10. What is the primary purpose of micro-batch?
Select an answer to check.
Answer: Frequent small batches (near-streaming).
Frequent small batches (near-streaming). is the correct answer here. Spark Structured Streaming. This matches the core idea being tested around what is the primary purpose of micro-batch. A quick elimination of partially true options helps confirm it.
Q11. Which statement about micro-batch is most accurate?
Select an answer to check.
Answer: Frequent small batches (near-streaming).
Here, Frequent small batches (near-streaming). is the right choice. Spark Structured Streaming. That is exactly the concept behind which statement about micro-batch is most accurate in this context. A quick elimination of partially true options helps confirm it.
Q12. How is micro-batch best characterized?
Select an answer to check.
Answer: Frequent small batches (near-streaming).
In this case, Frequent small batches (near-streaming). is correct. Spark Structured Streaming. That is exactly the concept behind how is micro-batch best characterized in this context. A quick elimination of partially true options helps confirm it.
Q13. Which option best describes event time?
Select an answer to check.
Answer: Time the event actually occurred.
The best option here is Time the event actually occurred.. Essential for correctness with delays. That is exactly the concept behind which option best describes event time in this context. A quick elimination of partially true options helps confirm it.
Q14. What is the primary purpose of event time?
Select an answer to check.
Answer: Time the event actually occurred.
For this question, Time the event actually occurred. is correct. Essential for correctness with delays. That is exactly the concept behind what is the primary purpose of event time in this context. A quick elimination of partially true options helps confirm it.
Q15. Which statement about event time is most accurate?
Select an answer to check.
Answer: Time the event actually occurred.
Time the event actually occurred. is the correct answer here. Essential for correctness with delays. That is exactly the concept behind which statement about event time is most accurate in this context. A quick elimination of partially true options helps confirm it.
Q16. How is event time best characterized?
Select an answer to check.
Answer: Time the event actually occurred.
Here, Time the event actually occurred. is the right choice. Essential for correctness with delays. It fits the requirement in the prompt about how is event time best characterized. A quick elimination of partially true options helps confirm it.
Q17. Which option best describes processing time?
Select an answer to check.
Answer: Time event is processed.
In this case, Time event is processed. is correct. Simpler but skewed under delays. It fits the requirement in the prompt about which option best describes processing time. A quick elimination of partially true options helps confirm it.
Q18. What is the primary purpose of processing time?
Select an answer to check.
Answer: Time event is processed.
The best option here is Time event is processed.. Simpler but skewed under delays. It fits the requirement in the prompt about what is the primary purpose of processing time. A quick elimination of partially true options helps confirm it.
Q19. Which statement about processing time is most accurate?
Select an answer to check.
Answer: Time event is processed.
For this question, Time event is processed. is correct. Simpler but skewed under delays. It fits the requirement in the prompt about which statement about processing time is most accurate. A quick elimination of partially true options helps confirm it.
Q20. How is processing time best characterized?
Select an answer to check.
Answer: Time event is processed.
Time event is processed. is the correct answer here. Simpler but skewed under delays. It fits the requirement in the prompt about how is processing time best characterized. A quick elimination of partially true options helps confirm it.
Q21. Which option best describes ingestion time?
Select an answer to check.
Answer: Time event entered the system.
Here, Time event entered the system. is the right choice. Pragmatic compromise. This is the most accurate statement for which option best describes ingestion time. A quick elimination of partially true options helps confirm it.
Q22. What is the primary purpose of ingestion time?
Select an answer to check.
Answer: Time event entered the system.
In this case, Time event entered the system. is correct. Pragmatic compromise. This is the most accurate statement for what is the primary purpose of ingestion time. A quick elimination of partially true options helps confirm it.
Q23. Which statement about ingestion time is most accurate?
Select an answer to check.
Answer: Time event entered the system.
The best option here is Time event entered the system.. Pragmatic compromise. This is the most accurate statement for which statement about ingestion time is most accurate. A quick elimination of partially true options helps confirm it.
Q24. How is ingestion time best characterized?
Select an answer to check.
Answer: Time event entered the system.
For this question, Time event entered the system. is correct. Pragmatic compromise. This is the most accurate statement for how is ingestion time best characterized. A quick elimination of partially true options helps confirm it.
Q25. Which option best describes watermarks?
Select an answer to check.
Answer: Estimate of how late events can still arrive.
Estimate of how late events can still arrive. is the correct answer here. Drive window completion. This is the most accurate statement for which option best describes watermarks. A quick elimination of partially true options helps confirm it.
Q26. What is the primary purpose of watermarks?
Select an answer to check.
Answer: Estimate of how late events can still arrive.
Here, Estimate of how late events can still arrive. is the right choice. Drive window completion. It aligns directly with what the question asks about what is the primary purpose of watermarks. The other options are either incomplete or contextually incorrect.
Q27. Which statement about watermarks is most accurate?
Select an answer to check.
Answer: Estimate of how late events can still arrive.
In this case, Estimate of how late events can still arrive. is correct. Drive window completion. It aligns directly with what the question asks about which statement about watermarks is most accurate. The other options are either incomplete or contextually incorrect.
Q28. How is watermarks best characterized?
Select an answer to check.
Answer: Estimate of how late events can still arrive.
The best option here is Estimate of how late events can still arrive.. Drive window completion. It aligns directly with what the question asks about how is watermarks best characterized. The other options are either incomplete or contextually incorrect.
Q29. Which option best describes windowing?
Select an answer to check.
Answer: Group events into time-bounded buckets.
For this question, Group events into time-bounded buckets. is correct. Tumbling/sliding/session. It aligns directly with what the question asks about which option best describes windowing. The other options are either incomplete or contextually incorrect.
Q30. What is the primary purpose of windowing?
Select an answer to check.
Answer: Group events into time-bounded buckets.
Group events into time-bounded buckets. is the correct answer here. Tumbling/sliding/session. It aligns directly with what the question asks about what is the primary purpose of windowing. The other options are either incomplete or contextually incorrect.
Q31. Which statement about windowing is most accurate?
Select an answer to check.
Answer: Group events into time-bounded buckets.
Here, Group events into time-bounded buckets. is the right choice. Tumbling/sliding/session. This matches the core idea being tested around which statement about windowing is most accurate. The other options are either incomplete or contextually incorrect.
Q32. How is windowing best characterized?
Select an answer to check.
Answer: Group events into time-bounded buckets.
In this case, Group events into time-bounded buckets. is correct. Tumbling/sliding/session. This matches the core idea being tested around how is windowing best characterized. The other options are either incomplete or contextually incorrect.
Q33. Which option best describes tumbling windows?
Select an answer to check.
Answer: Fixed, non-overlapping windows.
The best option here is Fixed, non-overlapping windows.. Simple aggregations. This matches the core idea being tested around which option best describes tumbling windows. The other options are either incomplete or contextually incorrect.
Q34. What is the primary purpose of tumbling windows?
Select an answer to check.
Answer: Fixed, non-overlapping windows.
For this question, Fixed, non-overlapping windows. is correct. Simple aggregations. This matches the core idea being tested around what is the primary purpose of tumbling windows. The other options are either incomplete or contextually incorrect.
Q35. Which statement about tumbling windows is most accurate?
Select an answer to check.
Answer: Fixed, non-overlapping windows.
Fixed, non-overlapping windows. is the correct answer here. Simple aggregations. This matches the core idea being tested around which statement about tumbling windows is most accurate. The other options are either incomplete or contextually incorrect.
Q36. How is tumbling windows best characterized?
Select an answer to check.
Answer: Fixed, non-overlapping windows.
Here, Fixed, non-overlapping windows. is the right choice. Simple aggregations. That is exactly the concept behind how is tumbling windows best characterized in this context. The other options are either incomplete or contextually incorrect.
Q37. Which option best describes sliding windows?
Select an answer to check.
Answer: Overlapping windows of fixed size.
In this case, Overlapping windows of fixed size. is correct. Smoother metrics. That is exactly the concept behind which option best describes sliding windows in this context. The other options are either incomplete or contextually incorrect.
Q38. What is the primary purpose of sliding windows?
Select an answer to check.
Answer: Overlapping windows of fixed size.
The best option here is Overlapping windows of fixed size.. Smoother metrics. That is exactly the concept behind what is the primary purpose of sliding windows in this context. The other options are either incomplete or contextually incorrect.
Q39. Which statement about sliding windows is most accurate?
Select an answer to check.
Answer: Overlapping windows of fixed size.
For this question, Overlapping windows of fixed size. is correct. Smoother metrics. That is exactly the concept behind which statement about sliding windows is most accurate in this context. The other options are either incomplete or contextually incorrect.
Q40. How is sliding windows best characterized?
Select an answer to check.
Answer: Overlapping windows of fixed size.
Overlapping windows of fixed size. is the correct answer here. Smoother metrics. That is exactly the concept behind how is sliding windows best characterized in this context. The other options are either incomplete or contextually incorrect.
Q41. Which option best describes session windows?
Select an answer to check.
Answer: Group activity bursts with idle gap.
Here, Group activity bursts with idle gap. is the right choice. User activity patterns. It fits the requirement in the prompt about which option best describes session windows. The other options are either incomplete or contextually incorrect.
Q42. What is the primary purpose of session windows?
Select an answer to check.
Answer: Group activity bursts with idle gap.
In this case, Group activity bursts with idle gap. is correct. User activity patterns. It fits the requirement in the prompt about what is the primary purpose of session windows. The other options are either incomplete or contextually incorrect.
Q43. Which statement about session windows is most accurate?
Select an answer to check.
Answer: Group activity bursts with idle gap.
The best option here is Group activity bursts with idle gap.. User activity patterns. It fits the requirement in the prompt about which statement about session windows is most accurate. The other options are either incomplete or contextually incorrect.
Q44. How is session windows best characterized?
Select an answer to check.
Answer: Group activity bursts with idle gap.
For this question, Group activity bursts with idle gap. is correct. User activity patterns. It fits the requirement in the prompt about how is session windows best characterized. The other options are either incomplete or contextually incorrect.
Q45. Which option best describes late data?
Select an answer to check.
Answer: Events arriving after window close.
Events arriving after window close. is the correct answer here. Configure tolerance/late updates. It fits the requirement in the prompt about which option best describes late data. The other options are either incomplete or contextually incorrect.
Q46. What is the primary purpose of late data?
Select an answer to check.
Answer: Events arriving after window close.
Here, Events arriving after window close. is the right choice. Configure tolerance/late updates. This is the most accurate statement for what is the primary purpose of late data. The other options are either incomplete or contextually incorrect.
Q47. Which statement about late data is most accurate?
Select an answer to check.
Answer: Events arriving after window close.
In this case, Events arriving after window close. is correct. Configure tolerance/late updates. This is the most accurate statement for which statement about late data is most accurate. The other options are either incomplete or contextually incorrect.
Q48. How is late data best characterized?
Select an answer to check.
Answer: Events arriving after window close.
The best option here is Events arriving after window close.. Configure tolerance/late updates. This is the most accurate statement for how is late data best characterized. The other options are either incomplete or contextually incorrect.
Q49. Which option best describes at-least-once delivery?
Select an answer to check.
Answer: Events possibly duplicated, never lost.
For this question, Events possibly duplicated, never lost. is correct. Default in many systems. This is the most accurate statement for which option best describes at-least-once delivery. The other options are either incomplete or contextually incorrect.
Q50. What is the primary purpose of at-least-once delivery?
Select an answer to check.
Answer: Events possibly duplicated, never lost.
Events possibly duplicated, never lost. is the correct answer here. Default in many systems. This is the most accurate statement for what is the primary purpose of at-least-once delivery. The other options are either incomplete or contextually incorrect.