Practice Java JPA/Hibernate 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 FetchType.LAZY is most accurate?
Select an answer to check.
Answer: Load association on demand.
Here, Load association on demand. is the right choice. Default for to-many. It aligns directly with what the question asks about which statement about fetchtype.lazy is most accurate. Competing choices sound plausible, but they miss the key condition.
Q52. How is FetchType.LAZY best characterized?
Select an answer to check.
Answer: Load association on demand.
In this case, Load association on demand. is correct. Default for to-many. It aligns directly with what the question asks about how is fetchtype.lazy best characterized. Competing choices sound plausible, but they miss the key condition.
Q53. Which option best describes FetchType.EAGER in Java?
Select an answer to check.
Answer: Load association immediately.
The best option here is Load association immediately.. Default for to-one; risky for to-many. It aligns directly with what the question asks about which option best describes fetchtype.eager in java. Competing choices sound plausible, but they miss the key condition.
Q54. What is the primary purpose of FetchType.EAGER?
Select an answer to check.
Answer: Load association immediately.
For this question, Load association immediately. is correct. Default for to-one; risky for to-many. It aligns directly with what the question asks about what is the primary purpose of fetchtype.eager. Competing choices sound plausible, but they miss the key condition.
Q55. Which statement about FetchType.EAGER is most accurate?
Select an answer to check.
Answer: Load association immediately.
Load association immediately. is the correct answer here. Default for to-one; risky for to-many. It aligns directly with what the question asks about which statement about fetchtype.eager is most accurate. Competing choices sound plausible, but they miss the key condition.
Q56. How is FetchType.EAGER best characterized?
Select an answer to check.
Answer: Load association immediately.
Here, Load association immediately. is the right choice. Default for to-one; risky for to-many. This matches the core idea being tested around how is fetchtype.eager best characterized. Competing choices sound plausible, but they miss the key condition.
Q57. Which option best describes the N+1 problem in Java?
Select an answer to check.
Answer: One query plus N queries via lazy loading.
In this case, One query plus N queries via lazy loading. is correct. Mitigate with fetch joins. This matches the core idea being tested around which option best describes the n+1 problem in. Competing choices sound plausible, but they miss the key condition.
Q58. What is the primary purpose of the N+1 problem?
Select an answer to check.
Answer: One query plus N queries via lazy loading.
The best option here is One query plus N queries via lazy loading.. Mitigate with fetch joins. This matches the core idea being tested around what is the primary purpose of the n+1. Competing choices sound plausible, but they miss the key condition.
Q59. Which statement about the N+1 problem is most accurate?
Select an answer to check.
Answer: One query plus N queries via lazy loading.
For this question, One query plus N queries via lazy loading. is correct. Mitigate with fetch joins. This matches the core idea being tested around which statement about the n+1 problem is most. Competing choices sound plausible, but they miss the key condition.
Q60. How is the N+1 problem best characterized?
Select an answer to check.
Answer: One query plus N queries via lazy loading.
One query plus N queries via lazy loading. is the correct answer here. Mitigate with fetch joins. This matches the core idea being tested around how is the n+1 problem best characterized. Competing choices sound plausible, but they miss the key condition.
Q61. Which option best describes JPQL in Java?
Select an answer to check.
Answer: Object-oriented query language.
Here, Object-oriented query language. is the right choice. Operates on entities. That is exactly the concept behind which option best describes jpql in java in this context. Competing choices sound plausible, but they miss the key condition.
Q62. What is the primary purpose of JPQL?
Select an answer to check.
Answer: Object-oriented query language.
In this case, Object-oriented query language. is correct. Operates on entities. That is exactly the concept behind what is the primary purpose of jpql in this context. Competing choices sound plausible, but they miss the key condition.
Q63. Which statement about JPQL is most accurate?
Select an answer to check.
Answer: Object-oriented query language.
The best option here is Object-oriented query language.. Operates on entities. That is exactly the concept behind which statement about jpql is most accurate in this context. Competing choices sound plausible, but they miss the key condition.
Q64. How is JPQL best characterized?
Select an answer to check.
Answer: Object-oriented query language.
For this question, Object-oriented query language. is correct. Operates on entities. That is exactly the concept behind how is jpql best characterized in this context. Competing choices sound plausible, but they miss the key condition.
Q65. Which option best describes Criteria API in Java?
Select an answer to check.
Answer: Type-safe programmatic queries.
Type-safe programmatic queries. is the correct answer here. More verbose; type-safe. That is exactly the concept behind which option best describes criteria api in java in this context. Competing choices sound plausible, but they miss the key condition.
Q66. What is the primary purpose of Criteria API?
Select an answer to check.
Answer: Type-safe programmatic queries.
Here, Type-safe programmatic queries. is the right choice. More verbose; type-safe. It fits the requirement in the prompt about what is the primary purpose of criteria api. Competing choices sound plausible, but they miss the key condition.
Q67. Which statement about Criteria API is most accurate?
Select an answer to check.
Answer: Type-safe programmatic queries.
In this case, Type-safe programmatic queries. is correct. More verbose; type-safe. It fits the requirement in the prompt about which statement about criteria api is most accurate. Competing choices sound plausible, but they miss the key condition.
Q68. How is Criteria API best characterized?
Select an answer to check.
Answer: Type-safe programmatic queries.
The best option here is Type-safe programmatic queries.. More verbose; type-safe. It fits the requirement in the prompt about how is criteria api best characterized. Competing choices sound plausible, but they miss the key condition.
Q69. Which option best describes @NamedQuery in Java?
Select an answer to check.
Answer: Predefined JPQL on the entity.
For this question, Predefined JPQL on the entity. is correct. Validated at startup. It fits the requirement in the prompt about which option best describes @namedquery in java. Competing choices sound plausible, but they miss the key condition.
Q70. What is the primary purpose of @NamedQuery?
Select an answer to check.
Answer: Predefined JPQL on the entity.
Predefined JPQL on the entity. is the correct answer here. Validated at startup. It fits the requirement in the prompt about what is the primary purpose of @namedquery. Competing choices sound plausible, but they miss the key condition.
Q71. Which statement about @NamedQuery is most accurate?
Select an answer to check.
Answer: Predefined JPQL on the entity.
Here, Predefined JPQL on the entity. is the right choice. Validated at startup. This is the most accurate statement for which statement about @namedquery is most accurate. Competing choices sound plausible, but they miss the key condition.
Q72. How is @NamedQuery best characterized?
Select an answer to check.
Answer: Predefined JPQL on the entity.
In this case, Predefined JPQL on the entity. is correct. Validated at startup. This is the most accurate statement for how is @namedquery best characterized. Competing choices sound plausible, but they miss the key condition.
Q73. Which option best describes orphanRemoval in Java?
Select an answer to check.
Answer: Delete child when removed from parent collection.
The best option here is Delete child when removed from parent collection.. Convenient but careful. This is the most accurate statement for which option best describes orphanremoval in java. Competing choices sound plausible, but they miss the key condition.
Q74. What is the primary purpose of orphanRemoval?
Select an answer to check.
Answer: Delete child when removed from parent collection.
For this question, Delete child when removed from parent collection. is correct. Convenient but careful. This is the most accurate statement for what is the primary purpose of orphanremoval. Competing choices sound plausible, but they miss the key condition.
Q75. Which statement about orphanRemoval is most accurate?
Select an answer to check.
Answer: Delete child when removed from parent collection.
Delete child when removed from parent collection. is the correct answer here. Convenient but careful. This is the most accurate statement for which statement about orphanremoval is most accurate. Competing choices sound plausible, but they miss the key condition.
Q76. How is orphanRemoval best characterized?
Select an answer to check.
Answer: Delete child when removed from parent collection.
Here, Delete child when removed from parent collection. is the right choice. Convenient but careful. It aligns directly with what the question asks about how is orphanremoval best characterized. The remaining choices fail because they don’t satisfy the full definition.
Q77. Which option best describes CascadeType in Java?
Select an answer to check.
Answer: Operations propagated to associations.
In this case, Operations propagated to associations. is correct. PERSIST, MERGE, REMOVE. It aligns directly with what the question asks about which option best describes cascadetype in java. The remaining choices fail because they don’t satisfy the full definition.
Q78. What is the primary purpose of CascadeType?
Select an answer to check.
Answer: Operations propagated to associations.
The best option here is Operations propagated to associations.. PERSIST, MERGE, REMOVE. It aligns directly with what the question asks about what is the primary purpose of cascadetype. The remaining choices fail because they don’t satisfy the full definition.
Q79. Which statement about CascadeType is most accurate?
Select an answer to check.
Answer: Operations propagated to associations.
For this question, Operations propagated to associations. is correct. PERSIST, MERGE, REMOVE. It aligns directly with what the question asks about which statement about cascadetype is most accurate. The remaining choices fail because they don’t satisfy the full definition.
Q80. How is CascadeType best characterized?
Select an answer to check.
Answer: Operations propagated to associations.
Operations propagated to associations. is the correct answer here. PERSIST, MERGE, REMOVE. It aligns directly with what the question asks about how is cascadetype best characterized. The remaining choices fail because they don’t satisfy the full definition.
Q81. Which option best describes the second-level cache in Java?
Select an answer to check.
Answer: Cross-session cache of entities.
Here, Cross-session cache of entities. is the right choice. Optional; provider-managed. This matches the core idea being tested around which option best describes the second-level cache in. The remaining choices fail because they don’t satisfy the full definition.
Q82. What is the primary purpose of the second-level cache?
Select an answer to check.
Answer: Cross-session cache of entities.
In this case, Cross-session cache of entities. is correct. Optional; provider-managed. This matches the core idea being tested around what is the primary purpose of the second-level. The remaining choices fail because they don’t satisfy the full definition.
Q83. Which statement about the second-level cache is most accurate?
Select an answer to check.
Answer: Cross-session cache of entities.
The best option here is Cross-session cache of entities.. Optional; provider-managed. This matches the core idea being tested around which statement about the second-level cache is most. The remaining choices fail because they don’t satisfy the full definition.
Q84. How is the second-level cache best characterized?
Select an answer to check.
Answer: Cross-session cache of entities.
For this question, Cross-session cache of entities. is correct. Optional; provider-managed. This matches the core idea being tested around how is the second-level cache best characterized. The remaining choices fail because they don’t satisfy the full definition.
Q85. Which option best describes optimistic locking in Java?
Select an answer to check.
Answer: @Version-based conflict detection.
@Version-based conflict detection. is the correct answer here. Throws OptimisticLockException. This matches the core idea being tested around which option best describes optimistic locking in java. The remaining choices fail because they don’t satisfy the full definition.
Q86. What is the primary purpose of optimistic locking?
Select an answer to check.
Answer: @Version-based conflict detection.
Here, @Version-based conflict detection. is the right choice. Throws OptimisticLockException. That is exactly the concept behind what is the primary purpose of optimistic locking in this context. The remaining choices fail because they don’t satisfy the full definition.
Q87. Which statement about optimistic locking is most accurate?
Select an answer to check.
Answer: @Version-based conflict detection.
In this case, @Version-based conflict detection. is correct. Throws OptimisticLockException. That is exactly the concept behind which statement about optimistic locking is most accurate in this context. The remaining choices fail because they don’t satisfy the full definition.
Q88. How is optimistic locking best characterized?
Select an answer to check.
Answer: @Version-based conflict detection.
The best option here is @Version-based conflict detection.. Throws OptimisticLockException. That is exactly the concept behind how is optimistic locking best characterized in this context. The remaining choices fail because they don’t satisfy the full definition.
Q89. Which option best describes pessimistic locking in Java?
Select an answer to check.
Answer: SELECT FOR UPDATE-style locks.
For this question, SELECT FOR UPDATE-style locks. is correct. Used when conflicts are common. That is exactly the concept behind which option best describes pessimistic locking in java in this context. The remaining choices fail because they don’t satisfy the full definition.
Q90. What is the primary purpose of pessimistic locking?
Select an answer to check.
Answer: SELECT FOR UPDATE-style locks.
SELECT FOR UPDATE-style locks. is the correct answer here. Used when conflicts are common. That is exactly the concept behind what is the primary purpose of pessimistic locking in this context. The remaining choices fail because they don’t satisfy the full definition.
Q91. Which statement about pessimistic locking is most accurate?
Select an answer to check.
Answer: SELECT FOR UPDATE-style locks.
Here, SELECT FOR UPDATE-style locks. is the right choice. Used when conflicts are common. It fits the requirement in the prompt about which statement about pessimistic locking is most accurate. The remaining choices fail because they don’t satisfy the full definition.
Q92. How is pessimistic locking best characterized?
Select an answer to check.
Answer: SELECT FOR UPDATE-style locks.
In this case, SELECT FOR UPDATE-style locks. is correct. Used when conflicts are common. It fits the requirement in the prompt about how is pessimistic locking best characterized. The remaining choices fail because they don’t satisfy the full definition.
Q93. Which option best describes DTO projections in Java?
Select an answer to check.
Answer: Select specific fields into DTOs.
The best option here is Select specific fields into DTOs.. Reduces overhead. It fits the requirement in the prompt about which option best describes dto projections in java. The remaining choices fail because they don’t satisfy the full definition.
Q94. What is the primary purpose of DTO projections?
Select an answer to check.
Answer: Select specific fields into DTOs.
For this question, Select specific fields into DTOs. is correct. Reduces overhead. It fits the requirement in the prompt about what is the primary purpose of dto projections. The remaining choices fail because they don’t satisfy the full definition.
Q95. Which statement about DTO projections is most accurate?
Select an answer to check.
Answer: Select specific fields into DTOs.
Select specific fields into DTOs. is the correct answer here. Reduces overhead. It fits the requirement in the prompt about which statement about dto projections is most accurate. The remaining choices fail because they don’t satisfy the full definition.
Q96. How is DTO projections best characterized?
Select an answer to check.
Answer: Select specific fields into DTOs.
Here, Select specific fields into DTOs. is the right choice. Reduces overhead. This is the most accurate statement for how is dto projections best characterized. The remaining choices fail because they don’t satisfy the full definition.
Q97. Which option best describes flush mode in Java?
Select an answer to check.
Answer: When changes are written to DB (AUTO/COMMIT).
In this case, When changes are written to DB (AUTO/COMMIT). is correct. Affects visibility before commit. This is the most accurate statement for which option best describes flush mode in java. The remaining choices fail because they don’t satisfy the full definition.
Q98. What is the primary purpose of flush mode?
Select an answer to check.
Answer: When changes are written to DB (AUTO/COMMIT).
The best option here is When changes are written to DB (AUTO/COMMIT).. Affects visibility before commit. This is the most accurate statement for what is the primary purpose of flush mode. The remaining choices fail because they don’t satisfy the full definition.
Q99. Which statement about flush mode is most accurate?
Select an answer to check.
Answer: When changes are written to DB (AUTO/COMMIT).
For this question, When changes are written to DB (AUTO/COMMIT). is correct. Affects visibility before commit. This is the most accurate statement for which statement about flush mode is most accurate. The remaining choices fail because they don’t satisfy the full definition.
Q100. How is flush mode best characterized?
Select an answer to check.
Answer: When changes are written to DB (AUTO/COMMIT).
When changes are written to DB (AUTO/COMMIT). is the correct answer here. Affects visibility before commit. This is the most accurate statement for how is flush mode best characterized. The remaining choices fail because they don’t satisfy the full definition.