Spark Streaming MCQ Questions with Answers (Latest 2026)
Practice Spark 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.
Q1. Which option best describes Structured Streaming?
Select an answer to check.
Answer: Spark's high-level streaming API on DataFrames.
Here, Spark's high-level streaming API on DataFrames. is the right choice. Continuous DF processing. It aligns directly with what the question asks about which option best describes structured streaming. A quick elimination of partially true options helps confirm it.
Q2. What is the primary purpose of Structured Streaming?
Select an answer to check.
Answer: Spark's high-level streaming API on DataFrames.
In this case, Spark's high-level streaming API on DataFrames. is correct. Continuous DF processing. It aligns directly with what the question asks about what is the primary purpose of structured streaming. A quick elimination of partially true options helps confirm it.
Q3. Which statement about Structured Streaming is most accurate?
Select an answer to check.
Answer: Spark's high-level streaming API on DataFrames.
The best option here is Spark's high-level streaming API on DataFrames.. Continuous DF processing. It aligns directly with what the question asks about which statement about structured streaming is most accurate. A quick elimination of partially true options helps confirm it.
Q4. How is Structured Streaming best characterized?
Select an answer to check.
Answer: Spark's high-level streaming API on DataFrames.
For this question, Spark's high-level streaming API on DataFrames. is correct. Continuous DF processing. It aligns directly with what the question asks about how is structured streaming best characterized. A quick elimination of partially true options helps confirm it.
Q5. Which option best describes DStream API?
Select an answer to check.
Answer: Older Spark Streaming API based on RDDs.
Older Spark Streaming API based on RDDs. is the correct answer here. Largely deprecated for new work. It aligns directly with what the question asks about which option best describes dstream api. A quick elimination of partially true options helps confirm it.
Q6. What is the primary purpose of DStream API?
Select an answer to check.
Answer: Older Spark Streaming API based on RDDs.
Here, Older Spark Streaming API based on RDDs. is the right choice. Largely deprecated for new work. This matches the core idea being tested around what is the primary purpose of dstream api. A quick elimination of partially true options helps confirm it.
Q7. Which statement about DStream API is most accurate?
Select an answer to check.
Answer: Older Spark Streaming API based on RDDs.
In this case, Older Spark Streaming API based on RDDs. is correct. Largely deprecated for new work. This matches the core idea being tested around which statement about dstream api is most accurate. A quick elimination of partially true options helps confirm it.
Q8. How is DStream API best characterized?
Select an answer to check.
Answer: Older Spark Streaming API based on RDDs.
The best option here is Older Spark Streaming API based on RDDs.. Largely deprecated for new work. This matches the core idea being tested around how is dstream api best characterized. A quick elimination of partially true options helps confirm it.
For this question, Default Structured Streaming execution mode. is correct. Frequent small batches. This matches the core idea being tested around which option best describes micro-batch. A quick elimination of partially true options helps confirm it.
Default Structured Streaming execution mode. is the correct answer here. Frequent small batches. 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?
Here, Default Structured Streaming execution mode. is the right choice. Frequent small batches. 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.
In this case, Default Structured Streaming execution mode. is correct. Frequent small batches. 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 continuous processing?
Select an answer to check.
Answer: Experimental low-latency Spark mode.
The best option here is Experimental low-latency Spark mode.. Tighter latency, fewer features. That is exactly the concept behind which option best describes continuous processing in this context. A quick elimination of partially true options helps confirm it.
Q14. What is the primary purpose of continuous processing?
Select an answer to check.
Answer: Experimental low-latency Spark mode.
For this question, Experimental low-latency Spark mode. is correct. Tighter latency, fewer features. That is exactly the concept behind what is the primary purpose of continuous processing in this context. A quick elimination of partially true options helps confirm it.
Q15. Which statement about continuous processing is most accurate?
Select an answer to check.
Answer: Experimental low-latency Spark mode.
Experimental low-latency Spark mode. is the correct answer here. Tighter latency, fewer features. That is exactly the concept behind which statement about continuous processing is most accurate in this context. A quick elimination of partially true options helps confirm it.
Q16. How is continuous processing best characterized?
Select an answer to check.
Answer: Experimental low-latency Spark mode.
Here, Experimental low-latency Spark mode. is the right choice. Tighter latency, fewer features. It fits the requirement in the prompt about how is continuous processing best characterized. A quick elimination of partially true options helps confirm it.
Q17. Which option best describes event time?
Select an answer to check.
Answer: Time the event happened.
In this case, Time the event happened. is correct. Used in windows/watermarks. It fits the requirement in the prompt about which option best describes event time. A quick elimination of partially true options helps confirm it.
Q18. What is the primary purpose of event time?
Select an answer to check.
Answer: Time the event happened.
The best option here is Time the event happened.. Used in windows/watermarks. It fits the requirement in the prompt about what is the primary purpose of event time. A quick elimination of partially true options helps confirm it.
Q19. Which statement about event time is most accurate?
Select an answer to check.
Answer: Time the event happened.
For this question, Time the event happened. is correct. Used in windows/watermarks. It fits the requirement in the prompt about which statement about event time is most accurate. A quick elimination of partially true options helps confirm it.
Q20. How is event time best characterized?
Select an answer to check.
Answer: Time the event happened.
Time the event happened. is the correct answer here. Used in windows/watermarks. It fits the requirement in the prompt about how is event time best characterized. A quick elimination of partially true options helps confirm it.
Q21. Which option best describes processing time?
Select an answer to check.
Answer: Time event is processed.
Here, Time event is processed. is the right choice. Simpler but skewed under delays. This is the most accurate statement for which option best describes processing time. A quick elimination of partially true options helps confirm it.
Q22. What is the primary purpose of 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. This is the most accurate statement for what is the primary purpose of processing time. A quick elimination of partially true options helps confirm it.
Q23. Which statement about processing time is most accurate?
Select an answer to check.
Answer: Time event is processed.
The best option here is Time event is processed.. Simpler but skewed under delays. This is the most accurate statement for which statement about processing time is most accurate. A quick elimination of partially true options helps confirm it.
Q24. How is processing time best characterized?
Select an answer to check.
Answer: Time event is processed.
For this question, Time event is processed. is correct. Simpler but skewed under delays. This is the most accurate statement for how is processing 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 arrive.
Estimate of how late events can 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 arrive.
Here, Estimate of how late events can 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 arrive.
In this case, Estimate of how late events can 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 arrive.
The best option here is Estimate of how late events can 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 tumbling windows?
Select an answer to check.
Answer: Fixed, non-overlapping time buckets.
For this question, Fixed, non-overlapping time buckets. is correct. Simple aggregation. It aligns directly with what the question asks about which option best describes tumbling windows. The other options are either incomplete or contextually incorrect.
Q30. What is the primary purpose of tumbling windows?
Select an answer to check.
Answer: Fixed, non-overlapping time buckets.
Fixed, non-overlapping time buckets. is the correct answer here. Simple aggregation. It aligns directly with what the question asks about what is the primary purpose of tumbling windows. The other options are either incomplete or contextually incorrect.
Q31. Which statement about tumbling windows is most accurate?
Select an answer to check.
Answer: Fixed, non-overlapping time buckets.
Here, Fixed, non-overlapping time buckets. is the right choice. Simple aggregation. 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.
Q32. How is tumbling windows best characterized?
Select an answer to check.
Answer: Fixed, non-overlapping time buckets.
In this case, Fixed, non-overlapping time buckets. is correct. Simple aggregation. This matches the core idea being tested around how is tumbling windows best characterized. The other options are either incomplete or contextually incorrect.
Q33. Which option best describes 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. This matches the core idea being tested around which option best describes sliding windows. The other options are either incomplete or contextually incorrect.
Q34. What is the primary purpose of sliding windows?
Select an answer to check.
Answer: Overlapping windows of fixed size.
For this question, Overlapping windows of fixed size. is correct. Smoother metrics. This matches the core idea being tested around what is the primary purpose of sliding windows. The other options are either incomplete or contextually incorrect.
Q35. Which statement about sliding windows is most accurate?
Select an answer to check.
Answer: Overlapping windows of fixed size.
Overlapping windows of fixed size. is the correct answer here. Smoother metrics. This matches the core idea being tested around which statement about sliding windows is most accurate. The other options are either incomplete or contextually incorrect.
Q36. How is sliding windows best characterized?
Select an answer to check.
Answer: Overlapping windows of fixed size.
Here, Overlapping windows of fixed size. is the right choice. 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.
Q37. Which option best describes session windows?
Select an answer to check.
Answer: Group bursts with idle gap.
In this case, Group bursts with idle gap. is correct. Activity patterns. That is exactly the concept behind which option best describes session windows in this context. The other options are either incomplete or contextually incorrect.
Q38. What is the primary purpose of session windows?
Select an answer to check.
Answer: Group bursts with idle gap.
The best option here is Group bursts with idle gap.. Activity patterns. That is exactly the concept behind what is the primary purpose of session windows in this context. The other options are either incomplete or contextually incorrect.
Q39. Which statement about session windows is most accurate?
Select an answer to check.
Answer: Group bursts with idle gap.
For this question, Group bursts with idle gap. is correct. Activity patterns. That is exactly the concept behind which statement about session windows is most accurate in this context. The other options are either incomplete or contextually incorrect.
Q40. How is session windows best characterized?
Select an answer to check.
Answer: Group bursts with idle gap.
Group bursts with idle gap. is the correct answer here. Activity patterns. That is exactly the concept behind how is session windows best characterized in this context. The other options are either incomplete or contextually incorrect.
Q41. Which option best describes output modes?
Select an answer to check.
Answer: Append, Update, Complete.
Here, Append, Update, Complete. is the right choice. Match to query type. It fits the requirement in the prompt about which option best describes output modes. The other options are either incomplete or contextually incorrect.
Q42. What is the primary purpose of output modes?
Select an answer to check.
Answer: Append, Update, Complete.
In this case, Append, Update, Complete. is correct. Match to query type. It fits the requirement in the prompt about what is the primary purpose of output modes. The other options are either incomplete or contextually incorrect.
Q43. Which statement about output modes is most accurate?
Select an answer to check.
Answer: Append, Update, Complete.
The best option here is Append, Update, Complete.. Match to query type. It fits the requirement in the prompt about which statement about output modes is most accurate. The other options are either incomplete or contextually incorrect.
Q44. How is output modes best characterized?
Select an answer to check.
Answer: Append, Update, Complete.
For this question, Append, Update, Complete. is correct. Match to query type. It fits the requirement in the prompt about how is output modes best characterized. The other options are either incomplete or contextually incorrect.
Q45. Which option best describes append output mode?
Select an answer to check.
Answer: Only new rows appended to sink.
Only new rows appended to sink. is the correct answer here. Default for many cases. It fits the requirement in the prompt about which option best describes append output mode. The other options are either incomplete or contextually incorrect.
Q46. What is the primary purpose of append output mode?
Select an answer to check.
Answer: Only new rows appended to sink.
Here, Only new rows appended to sink. is the right choice. Default for many cases. This is the most accurate statement for what is the primary purpose of append output. The other options are either incomplete or contextually incorrect.
Q47. Which statement about append output mode is most accurate?
Select an answer to check.
Answer: Only new rows appended to sink.
In this case, Only new rows appended to sink. is correct. Default for many cases. This is the most accurate statement for which statement about append output mode is most. The other options are either incomplete or contextually incorrect.
Q48. How is append output mode best characterized?
Select an answer to check.
Answer: Only new rows appended to sink.
The best option here is Only new rows appended to sink.. Default for many cases. This is the most accurate statement for how is append output mode best characterized. The other options are either incomplete or contextually incorrect.
Q49. Which option best describes update output mode?
Select an answer to check.
Answer: Updated rows since last batch are output.
For this question, Updated rows since last batch are output. is correct. For aggregations. This is the most accurate statement for which option best describes update output mode. The other options are either incomplete or contextually incorrect.
Q50. What is the primary purpose of update output mode?
Select an answer to check.
Answer: Updated rows since last batch are output.
Updated rows since last batch are output. is the correct answer here. For aggregations. This is the most accurate statement for what is the primary purpose of update output. The other options are either incomplete or contextually incorrect.