Spark Catalyst and Tungsten MCQ Questions with Answers – Page 2 (Latest 2026)
Practice Spark Catalyst and Tungsten 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.
Q51. Which statement about whole-stage codegen is most accurate?
Select an answer to check.
Answer: Generate Java for combined operators.
Here, Generate Java for combined operators. is the right choice. Reduces virtual calls. It aligns directly with what the question asks about which statement about whole-stage codegen is most accurate. Competing choices sound plausible, but they miss the key condition.
Q52. How is whole-stage codegen best characterized?
Select an answer to check.
Answer: Generate Java for combined operators.
In this case, Generate Java for combined operators. is correct. Reduces virtual calls. It aligns directly with what the question asks about how is whole-stage codegen best characterized. Competing choices sound plausible, but they miss the key condition.
Q53. Which option best describes vectorized execution?
Select an answer to check.
Answer: Process columnar batches at a time.
The best option here is Process columnar batches at a time.. Cache-friendly. It aligns directly with what the question asks about which option best describes vectorized execution. Competing choices sound plausible, but they miss the key condition.
Q54. What is the primary purpose of vectorized execution?
Select an answer to check.
Answer: Process columnar batches at a time.
For this question, Process columnar batches at a time. is correct. Cache-friendly. It aligns directly with what the question asks about what is the primary purpose of vectorized execution. Competing choices sound plausible, but they miss the key condition.
Q55. Which statement about vectorized execution is most accurate?
Select an answer to check.
Answer: Process columnar batches at a time.
Process columnar batches at a time. is the correct answer here. Cache-friendly. It aligns directly with what the question asks about which statement about vectorized execution is most accurate. Competing choices sound plausible, but they miss the key condition.
Q56. How is vectorized execution best characterized?
Select an answer to check.
Answer: Process columnar batches at a time.
Here, Process columnar batches at a time. is the right choice. Cache-friendly. This matches the core idea being tested around how is vectorized execution best characterized. Competing choices sound plausible, but they miss the key condition.
Q57. Which option best describes UnsafeRow?
Select an answer to check.
Answer: Compact binary row format.
In this case, Compact binary row format. is correct. Reduces GC. This matches the core idea being tested around which option best describes unsaferow. Competing choices sound plausible, but they miss the key condition.
Q58. What is the primary purpose of UnsafeRow?
Select an answer to check.
Answer: Compact binary row format.
The best option here is Compact binary row format.. Reduces GC. This matches the core idea being tested around what is the primary purpose of unsaferow. Competing choices sound plausible, but they miss the key condition.
Q59. Which statement about UnsafeRow is most accurate?
Select an answer to check.
Answer: Compact binary row format.
For this question, Compact binary row format. is correct. Reduces GC. This matches the core idea being tested around which statement about unsaferow is most accurate. Competing choices sound plausible, but they miss the key condition.
Q60. How is UnsafeRow best characterized?
Select an answer to check.
Answer: Compact binary row format.
Compact binary row format. is the correct answer here. Reduces GC. This matches the core idea being tested around how is unsaferow best characterized. Competing choices sound plausible, but they miss the key condition.
Q61. Which option best describes memory management (Tungsten)?
Select an answer to check.
Answer: On-heap + off-heap regions for execution/storage.
Here, On-heap + off-heap regions for execution/storage. is the right choice. Configurable fractions. That is exactly the concept behind which option best describes memory management (tungsten) in this context. Competing choices sound plausible, but they miss the key condition.
Q62. What is the primary purpose of memory management (Tungsten)?
Select an answer to check.
Answer: On-heap + off-heap regions for execution/storage.
In this case, On-heap + off-heap regions for execution/storage. is correct. Configurable fractions. That is exactly the concept behind what is the primary purpose of memory management in this context. Competing choices sound plausible, but they miss the key condition.
Q63. Which statement about memory management (Tungsten) is most accurate?
Select an answer to check.
Answer: On-heap + off-heap regions for execution/storage.
The best option here is On-heap + off-heap regions for execution/storage.. Configurable fractions. That is exactly the concept behind which statement about memory management (tungsten) is most in this context. Competing choices sound plausible, but they miss the key condition.
Q64. How is memory management (Tungsten) best characterized?
Select an answer to check.
Answer: On-heap + off-heap regions for execution/storage.
For this question, On-heap + off-heap regions for execution/storage. is correct. Configurable fractions. That is exactly the concept behind how is memory management (tungsten) best characterized in this context. Competing choices sound plausible, but they miss the key condition.
Q65. Which option best describes Photon?
Select an answer to check.
Answer: Native vectorized engine (Databricks).
Native vectorized engine (Databricks). is the correct answer here. C++ vectorized runtime. That is exactly the concept behind which option best describes photon in this context. Competing choices sound plausible, but they miss the key condition.
Q66. What is the primary purpose of Photon?
Select an answer to check.
Answer: Native vectorized engine (Databricks).
Here, Native vectorized engine (Databricks). is the right choice. C++ vectorized runtime. It fits the requirement in the prompt about what is the primary purpose of photon. Competing choices sound plausible, but they miss the key condition.
Q67. Which statement about Photon is most accurate?
Select an answer to check.
Answer: Native vectorized engine (Databricks).
In this case, Native vectorized engine (Databricks). is correct. C++ vectorized runtime. It fits the requirement in the prompt about which statement about photon is most accurate. Competing choices sound plausible, but they miss the key condition.
Q68. How is Photon best characterized?
Select an answer to check.
Answer: Native vectorized engine (Databricks).
The best option here is Native vectorized engine (Databricks).. C++ vectorized runtime. It fits the requirement in the prompt about how is photon best characterized. Competing choices sound plausible, but they miss the key condition.
Q69. Which option best describes explain('formatted')?
Select an answer to check.
Answer: Detailed plan output.
For this question, Detailed plan output. is correct. Inspect operators and exchanges. It fits the requirement in the prompt about which option best describes explain('formatted'). Competing choices sound plausible, but they miss the key condition.
Q70. What is the primary purpose of explain('formatted')?
Select an answer to check.
Answer: Detailed plan output.
Detailed plan output. is the correct answer here. Inspect operators and exchanges. It fits the requirement in the prompt about what is the primary purpose of explain('formatted'). Competing choices sound plausible, but they miss the key condition.
Q71. Which statement about explain('formatted') is most accurate?
Select an answer to check.
Answer: Detailed plan output.
Here, Detailed plan output. is the right choice. Inspect operators and exchanges. This is the most accurate statement for which statement about explain('formatted') is most accurate. Competing choices sound plausible, but they miss the key condition.
Q72. How is explain('formatted') best characterized?
Select an answer to check.
Answer: Detailed plan output.
In this case, Detailed plan output. is correct. Inspect operators and exchanges. This is the most accurate statement for how is explain('formatted') best characterized. Competing choices sound plausible, but they miss the key condition.
Q73. Which option best describes AnalysisException?
Select an answer to check.
Answer: Plan-time error (e.g., unknown column).
The best option here is Plan-time error (e.g., unknown column).. Catalyst detects early. This is the most accurate statement for which option best describes analysisexception. Competing choices sound plausible, but they miss the key condition.
Q74. What is the primary purpose of AnalysisException?
Select an answer to check.
Answer: Plan-time error (e.g., unknown column).
For this question, Plan-time error (e.g., unknown column). is correct. Catalyst detects early. This is the most accurate statement for what is the primary purpose of analysisexception. Competing choices sound plausible, but they miss the key condition.
Q75. Which statement about AnalysisException is most accurate?
Select an answer to check.
Answer: Plan-time error (e.g., unknown column).
Plan-time error (e.g., unknown column). is the correct answer here. Catalyst detects early. This is the most accurate statement for which statement about analysisexception is most accurate. Competing choices sound plausible, but they miss the key condition.
Q76. How is AnalysisException best characterized?
Select an answer to check.
Answer: Plan-time error (e.g., unknown column).
Here, Plan-time error (e.g., unknown column). is the right choice. Catalyst detects early. It aligns directly with what the question asks about how is analysisexception best characterized. The remaining choices fail because they don’t satisfy the full definition.
In this case, Convert JVM object <-> Tungsten binary row. is correct. Used for Datasets. It aligns directly with what the question asks about which option best describes encoder. The remaining choices fail because they don’t satisfy the full definition.
The best option here is Convert JVM object <-> Tungsten binary row.. Used for Datasets. It aligns directly with what the question asks about what is the primary purpose of encoder. The remaining choices fail because they don’t satisfy the full definition.
Q79. Which statement about encoder is most accurate?
For this question, Convert JVM object <-> Tungsten binary row. is correct. Used for Datasets. It aligns directly with what the question asks about which statement about encoder is most accurate. The remaining choices fail because they don’t satisfy the full definition.
Convert JVM object <-> Tungsten binary row. is the correct answer here. Used for Datasets. It aligns directly with what the question asks about how is encoder best characterized. The remaining choices fail because they don’t satisfy the full definition.
Q81. Which option best describes Arrow integration?
Select an answer to check.
Answer: Columnar format for Python/Pandas UDFs.
Here, Columnar format for Python/Pandas UDFs. is the right choice. Speeds up cross-language. This matches the core idea being tested around which option best describes arrow integration. The remaining choices fail because they don’t satisfy the full definition.
Q82. What is the primary purpose of Arrow integration?
Select an answer to check.
Answer: Columnar format for Python/Pandas UDFs.
In this case, Columnar format for Python/Pandas UDFs. is correct. Speeds up cross-language. This matches the core idea being tested around what is the primary purpose of arrow integration. The remaining choices fail because they don’t satisfy the full definition.
Q83. Which statement about Arrow integration is most accurate?
Select an answer to check.
Answer: Columnar format for Python/Pandas UDFs.
The best option here is Columnar format for Python/Pandas UDFs.. Speeds up cross-language. This matches the core idea being tested around which statement about arrow integration is most accurate. The remaining choices fail because they don’t satisfy the full definition.
Q84. How is Arrow integration best characterized?
Select an answer to check.
Answer: Columnar format for Python/Pandas UDFs.
For this question, Columnar format for Python/Pandas UDFs. is correct. Speeds up cross-language. This matches the core idea being tested around how is arrow integration best characterized. The remaining choices fail because they don’t satisfy the full definition.
Q85. Which option best describes DPP?
Select an answer to check.
Answer: Dynamic partition pruning at runtime.
Dynamic partition pruning at runtime. is the correct answer here. AQE/Spark 3 feature. This matches the core idea being tested around which option best describes dpp. The remaining choices fail because they don’t satisfy the full definition.
Q86. What is the primary purpose of DPP?
Select an answer to check.
Answer: Dynamic partition pruning at runtime.
Here, Dynamic partition pruning at runtime. is the right choice. AQE/Spark 3 feature. That is exactly the concept behind what is the primary purpose of dpp in this context. The remaining choices fail because they don’t satisfy the full definition.
Q87. Which statement about DPP is most accurate?
Select an answer to check.
Answer: Dynamic partition pruning at runtime.
In this case, Dynamic partition pruning at runtime. is correct. AQE/Spark 3 feature. That is exactly the concept behind which statement about dpp is most accurate in this context. The remaining choices fail because they don’t satisfy the full definition.
Q88. How is DPP best characterized?
Select an answer to check.
Answer: Dynamic partition pruning at runtime.
The best option here is Dynamic partition pruning at runtime.. AQE/Spark 3 feature. That is exactly the concept behind how is dpp best characterized in this context. The remaining choices fail because they don’t satisfy the full definition.
Q89. Which option best describes AQE?
Select an answer to check.
Answer: Adaptive Query Execution.
For this question, Adaptive Query Execution. is correct. Adjust plans at runtime. That is exactly the concept behind which option best describes aqe in this context. The remaining choices fail because they don’t satisfy the full definition.
Q90. What is the primary purpose of AQE?
Select an answer to check.
Answer: Adaptive Query Execution.
Adaptive Query Execution. is the correct answer here. Adjust plans at runtime. That is exactly the concept behind what is the primary purpose of aqe in this context. The remaining choices fail because they don’t satisfy the full definition.
Q91. Which statement about AQE is most accurate?
Select an answer to check.
Answer: Adaptive Query Execution.
Here, Adaptive Query Execution. is the right choice. Adjust plans at runtime. It fits the requirement in the prompt about which statement about aqe is most accurate. The remaining choices fail because they don’t satisfy the full definition.
Q92. How is AQE best characterized?
Select an answer to check.
Answer: Adaptive Query Execution.
In this case, Adaptive Query Execution. is correct. Adjust plans at runtime. It fits the requirement in the prompt about how is aqe best characterized. The remaining choices fail because they don’t satisfy the full definition.
Q93. Which option best describes plan cache?
Select an answer to check.
Answer: Reuse plans for repeated queries.
The best option here is Reuse plans for repeated queries.. Implementation detail. It fits the requirement in the prompt about which option best describes plan cache. The remaining choices fail because they don’t satisfy the full definition.
Q94. What is the primary purpose of plan cache?
Select an answer to check.
Answer: Reuse plans for repeated queries.
For this question, Reuse plans for repeated queries. is correct. Implementation detail. It fits the requirement in the prompt about what is the primary purpose of plan cache. The remaining choices fail because they don’t satisfy the full definition.
Q95. Which statement about plan cache is most accurate?
Select an answer to check.
Answer: Reuse plans for repeated queries.
Reuse plans for repeated queries. is the correct answer here. Implementation detail. It fits the requirement in the prompt about which statement about plan cache is most accurate. The remaining choices fail because they don’t satisfy the full definition.
Q96. How is plan cache best characterized?
Select an answer to check.
Answer: Reuse plans for repeated queries.
Here, Reuse plans for repeated queries. is the right choice. Implementation detail. This is the most accurate statement for how is plan cache best characterized. The remaining choices fail because they don’t satisfy the full definition.
Q97. Which option best describes statistics?
Select an answer to check.
Answer: Row counts and column stats for CBO.
In this case, Row counts and column stats for CBO. is correct. Computed via ANALYZE TABLE. This is the most accurate statement for which option best describes statistics. The remaining choices fail because they don’t satisfy the full definition.
Q98. What is the primary purpose of statistics?
Select an answer to check.
Answer: Row counts and column stats for CBO.
The best option here is Row counts and column stats for CBO.. Computed via ANALYZE TABLE. This is the most accurate statement for what is the primary purpose of statistics. The remaining choices fail because they don’t satisfy the full definition.
Q99. Which statement about statistics is most accurate?
Select an answer to check.
Answer: Row counts and column stats for CBO.
For this question, Row counts and column stats for CBO. is correct. Computed via ANALYZE TABLE. This is the most accurate statement for which statement about statistics is most accurate. The remaining choices fail because they don’t satisfy the full definition.
Q100. How is statistics best characterized?
Select an answer to check.
Answer: Row counts and column stats for CBO.
Row counts and column stats for CBO. is the correct answer here. Computed via ANALYZE TABLE. This is the most accurate statement for how is statistics best characterized. The remaining choices fail because they don’t satisfy the full definition.