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MongoDB C100DBA Exam - Topic 1 Question 65 Discussion

The oplog (operations log) is a special capped collection that keeps a rolling record of all operations that modify the data stored in your databases. All the replica set members contain a copy of the oplog in the following collection:
A) <replicasetid>.oplog.rs
B) oplog.rs
C) <database>..oplog.rs
D) local.oplog.rs

MongoDB C100DBA Exam - Topic 1 Question 65 Discussion

Actual exam question for MongoDB's C100DBA exam
Question #: 65
Topic #: 1
[All C100DBA Questions]

The oplog (operations log) is a special capped collection that keeps a rolling record of all operations that modify the data stored in your databases. All the replica set members contain a copy of the oplog in the following collection:

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Suggested Answer: A

by Ryan at Feb 02, 2023, 09:49 AM

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Hershel
8 months ago
Wait, are you sure? I always thought it was something else!
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Carolann
8 months ago
Totally agree, it's local.oplog.rs. No doubt about it!
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Albina
9 months ago
Yeah, local.oplog.rs makes sense, but why "local"?
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Isaiah
9 months ago
I thought it was just called oplog.rs, but I guess not.
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Kanisha
9 months ago
It's definitely local.oplog.rs for replica sets!
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Adaline
9 months ago
I'm pretty confident that the oplog is in a collection called oplog.rs, but I can't remember if it's just that or if it has to include the database name.
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Titus
9 months ago
I feel like I saw something about the oplog being part of the database name, but that doesn't seem right for this question.
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Emile
9 months ago
I remember practicing a question about replica sets, and I think the correct answer was local.oplog.rs, but I could be mixing it up with something else.
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Avery
9 months ago
I think the oplog is stored in the local database, but I'm not entirely sure if it's specifically called local.oplog.rs.
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Sylvie
9 months ago
Assessing testers solely on how many failures they find? That seems like it could lead to some unhealthy behaviors. I'll keep that in mind.
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Norah
10 months ago
This seems like a straightforward question about managing risk assessment bias. I'd focus on evaluating and documenting the bias, then communicating it to management.
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Tonette
1 year ago
Wait, is the oplog stored in the 'local' database or the 'local.oplog.rs' collection? I'm so confused, time to phone a friend!
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Meghann
1 year ago
Option A seems right to me. The oplog has to be specific to each replica set, so it makes sense that it would have the replica set ID in the collection name.
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Jenise
1 year ago
Haha, I bet the correct answer is option C. Gotta love those sneaky database names with extra periods!
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Leonie
1 year ago
Marquetta: Thanks for the clarification!
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Marquetta
1 year ago
Stanton: Nope, it's definitely D) local.oplog.rs
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Stanton
1 year ago
User 2: Oh really? I thought it was option A) .oplog.rs
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Enola
1 year ago
User 1: Actually, the correct answer is option D) local.oplog.rs
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Sommer
1 year ago
I think it's option B. The oplog is a standalone collection named 'oplog.rs', not tied to a specific replica set ID or database.
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Glenn
1 year ago
I think it's option B. The oplog is a standalone collection named 'oplog.rs', not tied to a specific replica set ID or database.
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Tommy
1 year ago
D) local.oplog.rs
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Cammy
1 year ago
C) ..oplog.rs
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Cary
1 year ago
B) oplog.rs
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Helaine
1 year ago
A) .oplog.rs
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Jannette
1 year ago
I'm pretty sure it's option D. The oplog is stored in the local database, which is a special database that's not part of the normal data storage.
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Vicente
1 year ago
I agree, the oplog is stored in the local database
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Denna
1 year ago
B) oplog.rs
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Lavina
1 year ago
I think it's D) local.oplog.rs
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Corinne
1 year ago
A) .oplog.rs
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Dorthy
1 year ago
D) local.oplog.rs
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Tenesha
1 year ago
B) oplog.rs
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Sylvia
1 year ago
I think it's D) local.oplog.rs
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Alberto
1 year ago
A) .oplog.rs
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Wenona
1 year ago
I'm not sure, but I think it's A) .oplog.rs.
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Carey
1 year ago
I agree with Ahmed, because the oplog is stored in the local database.
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Ahmed
1 year ago
I think the answer is D) local.oplog.rs.
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