15 Replication 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.a topology where one node accepts writes and propagates them to read-only copies
B.the minimum number of replicas that must acknowledge an operation for it to be considered successful
C.a rule directing whether queries go to the primary or to secondary copies
D.a group of nodes holding copies of the same data for redundancy and failover in MongoDB
Answer + AI explanation with Pro
2. Which term means: "a group of nodes holding copies of the same data for redundancy and failover in MongoDB"?
Mid
A.Replica set
B.Quorum
C.Write concern
D.Leader-follower
Answer + AI explanation with Pro
3. Which statement is correct?
Mid
A.Replica set — a topology where one node accepts writes and propagates them to read-only copies
B.Replica set — a setting controlling how many copies must confirm a save before the client gets an acknowledgement
C.Replica set — the minimum number of replicas that must acknowledge an operation for it to be considered successful
D.Replica set — a group of nodes holding copies of the same data for redundancy and failover in MongoDB
Answer + AI explanation with Pro
4. What is Leader-follower?
Mid
A.a setting controlling how many copies must confirm a save before the client gets an acknowledgement
B.the minimum number of replicas that must acknowledge an operation for it to be considered successful
C.a topology where one node accepts writes and propagates them to read-only copies
D.a rule directing whether queries go to the primary or to secondary copies
Answer + AI explanation with Pro
5. Which term means: "a topology where one node accepts writes and propagates them to read-only copies"?
Mid
A.Leader-follower
B.Quorum
C.Read preference
D.Replica set
Answer + AI explanation with Pro
6. Which statement is correct?
Mid
A.Leader-follower — the minimum number of replicas that must acknowledge an operation for it to be considered successful
B.Leader-follower — a topology where one node accepts writes and propagates them to read-only copies
C.Leader-follower — a rule directing whether queries go to the primary or to secondary copies
D.Leader-follower — a setting controlling how many copies must confirm a save before the client gets an acknowledgement
Answer + AI explanation with Pro
7. What is Quorum?
Senior
A.a rule directing whether queries go to the primary or to secondary copies
B.the minimum number of replicas that must acknowledge an operation for it to be considered successful
C.a topology where one node accepts writes and propagates them to read-only copies
D.a setting controlling how many copies must confirm a save before the client gets an acknowledgement
Answer + AI explanation with Pro
8. Which term means: "the minimum number of replicas that must acknowledge an operation for it to be considered successful"?
Senior
A.Leader-follower
B.Quorum
C.Write concern
D.Read preference
Answer + AI explanation with Pro
9. Which statement is correct?
Senior
A.Quorum — a setting controlling how many copies must confirm a save before the client gets an acknowledgement
B.Quorum — the minimum number of replicas that must acknowledge an operation for it to be considered successful
C.Quorum — a group of nodes holding copies of the same data for redundancy and failover in MongoDB
D.Quorum — a rule directing whether queries go to the primary or to secondary copies
Answer + AI explanation with Pro
10. What is Write concern?
Senior
A.a setting controlling how many copies must confirm a save before the client gets an acknowledgement
B.a rule directing whether queries go to the primary or to secondary copies
C.a group of nodes holding copies of the same data for redundancy and failover in MongoDB
D.a topology where one node accepts writes and propagates them to read-only copies
Answer + AI explanation with Pro
11. Which term means: "a setting controlling how many copies must confirm a save before the client gets an acknowledgement"?
Senior
A.Replica set
B.Read preference
C.Quorum
D.Write concern
Answer + AI explanation with Pro
12. Which statement is correct?
Senior
A.Write concern — a rule directing whether queries go to the primary or to secondary copies
B.Write concern — a topology where one node accepts writes and propagates them to read-only copies
C.Write concern — the minimum number of replicas that must acknowledge an operation for it to be considered successful
D.Write concern — a setting controlling how many copies must confirm a save before the client gets an acknowledgement
Answer + AI explanation with Pro
13. What is Read preference?
Senior
A.a group of nodes holding copies of the same data for redundancy and failover in MongoDB
B.a topology where one node accepts writes and propagates them to read-only copies
C.the minimum number of replicas that must acknowledge an operation for it to be considered successful
D.a rule directing whether queries go to the primary or to secondary copies
Answer + AI explanation with Pro
14. Which term means: "a rule directing whether queries go to the primary or to secondary copies"?
Senior
A.Leader-follower
B.Quorum
C.Read preference
D.Replica set
Answer + AI explanation with Pro
15. Which statement is correct?
Senior
A.Read preference — a rule directing whether queries go to the primary or to secondary copies
B.Read preference — a group of nodes holding copies of the same data for redundancy and failover in MongoDB
C.Read preference — a setting controlling how many copies must confirm a save before the client gets an acknowledgement
D.Read preference — the minimum number of replicas that must acknowledge an operation for it to be considered successful
Answer + AI explanation with Pro
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