MongoDB Exam C100DBA Topic 1 Question 92 Discussion

Actual exam question for MongoDB's C100DBA exam

Question #: 92
Topic #: 1

[All C100DBA Questions]

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

Show Suggested Answer

Suggested Answer: C

by Paz at Jul 09, 2024, 09:25 AM

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Shalon

9 months ago

I'm just glad the question didn't ask about the 'mongooprah' command. That one always trips me up!

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Blythe

9 months ago

Option B sounds right to me. Isn't that how MongoDB is designed to work, to read from the nearest member by default?

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Kenneth

9 months ago

Hmm, I don't know about option B. Isn't that just a default setting that can be changed? Maybe it's not always true.

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Bambi

8 months ago

I think it can be changed, so it may not always be true.

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Gladys

8 months ago

Option B is true, clients do read from the nearest member by default.

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Vivan

9 months ago

I think A and C are both true. The replica set members can replicate from each other, and the oplog is where the primary stores the operations.

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Clare

9 months ago

I'm pretty sure option C is correct. The oplog is where the primary records all operations, right?

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In

8 months ago

So, the correct options are A and C. Good job on identifying them!

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Shad

8 months ago

Option C is definitely true. The oplog is essential for replication in MongoDB.

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Jestine

8 months ago

You're right. Option A is also correct. Members can replicate data from any other data-bearing member by default.

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Jaime

8 months ago

That's right. The oplog is a capped collection that stores all the operations on the primary.

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Melissa

8 months ago

Yes, you are correct. Option C is true. The oplog is where all operations on the primary are recorded.

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Jenise

8 months ago

That's good to know. I think option A is also true. Members of a replica set may replicate data from any other data-bearing member.

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Refugia

9 months ago

Option C is definitely true. The oplog is essential for replication in MongoDB.

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Mollie

9 months ago

Yes, you are correct. Option C is true. The oplog is where the primary records all operations.

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Olen

9 months ago

That's right. The oplog is a capped collection that stores all the operations on the primary.

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Meghan

9 months ago

Yes, you are correct. Option C is true. The oplog is where the primary records all operations.

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Mendy

10 months ago

I'm not sure about B), but I think A) and C) are definitely true based on my understanding of MongoDB replication.

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Paulina

10 months ago

I agree with A), but I also think C) is true because operations on the primary are recorded in the oplog.

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Arthur

10 months ago

I think A) is true because members can replicate data from any other data-bearing member.

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