18 CAP & Consistency questions from the NoSQL bank, written for Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd.
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A.the transactional guarantees of atomicity, consistency, isolation, and durability emphasized by relational systems
B.the principle that a distributed store can guarantee only two of consistency, availability, and partition tolerance at once
C.an availability-favoring model summarized as basically available, soft state, and eventual convergence
D.a guarantee that replicas converge to the same value over time if no new writes arrive, allowing temporary staleness
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2. Which term means: "the principle that a distributed store can guarantee only two of consistency, availability, and partition tolerance at once"?
Mid
A.Strong consistency
B.BASE
C.CAP theorem
D.ACID
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3. Which statement is correct?
Mid
A.CAP theorem — a guarantee that replicas converge to the same value over time if no new writes arrive, allowing temporary staleness
B.CAP theorem — the principle that a distributed store can guarantee only two of consistency, availability, and partition tolerance at once
C.CAP theorem — the transactional guarantees of atomicity, consistency, isolation, and durability emphasized by relational systems
D.CAP theorem — letting a client choose per-operation how many replicas must respond, trading latency against freshness
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4. What is Eventual consistency?
Mid
A.the principle that a distributed store can guarantee only two of consistency, availability, and partition tolerance at once
B.a guarantee that replicas converge to the same value over time if no new writes arrive, allowing temporary staleness
C.a guarantee that every read returns the most recent committed write, as if there were a single up-to-date copy
D.the transactional guarantees of atomicity, consistency, isolation, and durability emphasized by relational systems
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5. Which term means: "a guarantee that replicas converge to the same value over time if no new writes arrive, allowing temporary staleness"?
Mid
A.Tunable consistency
B.ACID
C.Strong consistency
D.Eventual consistency
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6. Which statement is correct?
Mid
A.Eventual consistency — a guarantee that every read returns the most recent committed write, as if there were a single up-to-date copy
B.Eventual consistency — the transactional guarantees of atomicity, consistency, isolation, and durability emphasized by relational systems
C.Eventual consistency — an availability-favoring model summarized as basically available, soft state, and eventual convergence
D.Eventual consistency — a guarantee that replicas converge to the same value over time if no new writes arrive, allowing temporary staleness
Answer + AI explanation with Pro
7. What is Strong consistency?
Mid
A.letting a client choose per-operation how many replicas must respond, trading latency against freshness
B.a guarantee that every read returns the most recent committed write, as if there were a single up-to-date copy
C.an availability-favoring model summarized as basically available, soft state, and eventual convergence
D.the principle that a distributed store can guarantee only two of consistency, availability, and partition tolerance at once
Answer + AI explanation with Pro
8. Which term means: "a guarantee that every read returns the most recent committed write, as if there were a single up-to-date copy"?
Mid
A.BASE
B.ACID
C.Strong consistency
D.Eventual consistency
Answer + AI explanation with Pro
9. Which statement is correct?
Mid
A.Strong consistency — a guarantee that every read returns the most recent committed write, as if there were a single up-to-date copy
B.Strong consistency — an availability-favoring model summarized as basically available, soft state, and eventual convergence
C.Strong consistency — letting a client choose per-operation how many replicas must respond, trading latency against freshness
D.Strong consistency — the transactional guarantees of atomicity, consistency, isolation, and durability emphasized by relational systems
Answer + AI explanation with Pro
10. What is BASE?
Junior
A.a guarantee that every read returns the most recent committed write, as if there were a single up-to-date copy
B.the principle that a distributed store can guarantee only two of consistency, availability, and partition tolerance at once
C.the transactional guarantees of atomicity, consistency, isolation, and durability emphasized by relational systems
D.an availability-favoring model summarized as basically available, soft state, and eventual convergence
Answer + AI explanation with Pro
11. Which term means: "an availability-favoring model summarized as basically available, soft state, and eventual convergence"?
Junior
A.Tunable consistency
B.CAP theorem
C.BASE
D.ACID
Answer + AI explanation with Pro
12. Which statement is correct?
Junior
A.BASE — a guarantee that every read returns the most recent committed write, as if there were a single up-to-date copy
B.BASE — the transactional guarantees of atomicity, consistency, isolation, and durability emphasized by relational systems
C.BASE — letting a client choose per-operation how many replicas must respond, trading latency against freshness
D.BASE — an availability-favoring model summarized as basically available, soft state, and eventual convergence
Answer + AI explanation with Pro
13. What is ACID?
Junior
A.a guarantee that every read returns the most recent committed write, as if there were a single up-to-date copy
B.the principle that a distributed store can guarantee only two of consistency, availability, and partition tolerance at once
C.the transactional guarantees of atomicity, consistency, isolation, and durability emphasized by relational systems
D.letting a client choose per-operation how many replicas must respond, trading latency against freshness
Answer + AI explanation with Pro
14. Which term means: "the transactional guarantees of atomicity, consistency, isolation, and durability emphasized by relational systems"?
Junior
A.Tunable consistency
B.BASE
C.Eventual consistency
D.ACID
Answer + AI explanation with Pro
15. Which statement is correct?
Junior
A.ACID — letting a client choose per-operation how many replicas must respond, trading latency against freshness
B.ACID — the transactional guarantees of atomicity, consistency, isolation, and durability emphasized by relational systems
C.ACID — an availability-favoring model summarized as basically available, soft state, and eventual convergence
D.ACID — the principle that a distributed store can guarantee only two of consistency, availability, and partition tolerance at once
Answer + AI explanation with Pro
16. What is Tunable consistency?
Senior
A.an availability-favoring model summarized as basically available, soft state, and eventual convergence
B.the transactional guarantees of atomicity, consistency, isolation, and durability emphasized by relational systems
C.the principle that a distributed store can guarantee only two of consistency, availability, and partition tolerance at once
D.letting a client choose per-operation how many replicas must respond, trading latency against freshness
Answer + AI explanation with Pro
17. Which term means: "letting a client choose per-operation how many replicas must respond, trading latency against freshness"?
Senior
A.Strong consistency
B.CAP theorem
C.BASE
D.Tunable consistency
Answer + AI explanation with Pro
18. Which statement is correct?
Senior
A.Tunable consistency — the transactional guarantees of atomicity, consistency, isolation, and durability emphasized by relational systems
B.Tunable consistency — letting a client choose per-operation how many replicas must respond, trading latency against freshness
C.Tunable consistency — the principle that a distributed store can guarantee only two of consistency, availability, and partition tolerance at once
D.Tunable consistency — an availability-favoring model summarized as basically available, soft state, and eventual convergence
Answer + AI explanation with Pro
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