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MongoDB Exam C100DBA 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:

A<replicasetid>.oplog.rs

Boplog.rs

C<database>..oplog.rs

Dlocal.oplog.rs

Show Suggested Answer

Suggested Answer: A

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

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Tonette

2 months 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

2 months 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

2 months ago

Haha, I bet the correct answer is option C. Gotta love those sneaky database names with extra periods!

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Leonie

26 days ago

Marquetta: Thanks for the clarification!

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Marquetta

27 days ago

Stanton: Nope, it's definitely D) local.oplog.rs

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Stanton

30 days ago

User 2: Oh really? I thought it was option A) .oplog.rs

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Enola

1 months ago

User 1: Actually, the correct answer is option D) local.oplog.rs

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Sommer

2 months 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

18 days 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

19 days ago

D) local.oplog.rs

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Cammy

20 days ago

C) ..oplog.rs

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Cary

24 days ago

B) oplog.rs

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Helaine

27 days ago

A) .oplog.rs

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Jannette

3 months 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

24 days ago

I agree, the oplog is stored in the local database

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Denna

25 days ago

B) oplog.rs

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Lavina

26 days ago

I think it's D) local.oplog.rs

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Corinne

27 days ago

A) .oplog.rs

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Dorthy

28 days ago

D) local.oplog.rs

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Tenesha

29 days ago

B) oplog.rs

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Sylvia

1 months ago

I think it's D) local.oplog.rs

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Alberto

1 months ago

A) .oplog.rs

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Wenona

3 months ago

I'm not sure, but I think it's A) .oplog.rs.

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Carey

4 months ago

I agree with Ahmed, because the oplog is stored in the local database.

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Ahmed

4 months ago

I think the answer is D) local.oplog.rs.

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