MongoDB Exam C100DBA Topic 1 Question 86 Discussion

Actual exam question for MongoDB's C100DBA exam

Question #: 86
Topic #: 1

Which of the following is true of the mechanics of replication in MongoDB? Check all that apply.

AMembers of a replica set may replicate data from any other data-bearing member of the set by default

BClients read from the nearest member of a replica ser by default

COperations on the primary are recorded in a capped collection called the oplog

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Suggested Answer: C

by Elvera at Apr 29, 2024, 03:07 PM

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6 months ago

I'm leaning towards A and C too. The mechanics of replication can be confusing.

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6 months ago

A and C make sense to me. B doesn't seem quite right.

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6 months ago

I agree with C. Operations on the primary must be recorded somewhere.

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7 months ago

I feel uncertain about this question. But, I remember reading something about the oplog. So C must be right.

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7 months ago

Really? I'm pretty sure B is correct too. Clients read from the nearest member.

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7 months ago

This question is tricky. I think answer A is correct.

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