MongoDB C100DBA Exam - Topic 3 Question 115 Discussion

Actual exam question for MongoDB's C100DBA exam

Question #: 115
Topic #: 3

In order to ensure that you can maintain high availability in the face of server failure, you should implement which of the following?

ASharding

BProperly defined user roles

CReplication

DPut indexes on all of your documents

EThe proper storage engine

Show Suggested Answer

Suggested Answer: C

by Stephen at Jul 31, 2025, 06:51 PM

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Johana

5 months ago

Wait, can you really rely on replication alone?

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Ruth

5 months ago

Sharding doesn't really help with server failure.

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Brett

5 months ago

Replication is key for high availability!

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Colby

6 months ago

Proper storage engine matters too, but replication is a must!

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Myra

6 months ago

Totally agree, replication saves the day.

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Lovetta

6 months ago

I’m a bit confused about the role of indexes in this context. They seem more about performance than availability.

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Ashley

6 months ago

I feel like user roles and storage engines are important, but they don't directly relate to high availability like replication does.

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Brice

7 months ago

I remember practicing a question like this, and I think replication was the answer. It helps with failover, right?

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Lavelle

7 months ago

I think replication is the key here, but I'm not entirely sure if sharding could also play a role in high availability.

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Lettie

7 months ago

The storage engine could be important, but I think replication is the key thing to focus on for this question.

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Deane

7 months ago

Putting indexes on all documents? That doesn't sound like it would help with availability. I'll rule that one out.

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Arlene

7 months ago

I'm not sure about sharding - that's more for scaling, right? I'll have to double-check the differences between that and replication.

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Lashanda

8 months ago

Replication seems like the obvious choice here. That's the best way to ensure your data is still available if a server goes down.

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Dierdre

8 months ago

Hmm, this seems like a tricky one. I'll need to think carefully about the different options and how they relate to high availability.

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Kristeen

8 months ago

I would go with E) The proper storage engine, it's crucial for availability.

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Tess

9 months ago

Putting indexes on all documents? That's just gonna slow everything down. Replication is the way to go, no doubt.

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Mona

8 months ago

Properly defined user roles are important too, but replication is key for high availability.

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Dan

8 months ago

I agree, sharding can be complex and indexing everything might slow things down.

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Cammy

8 months ago

Replication is definitely the way to go.

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Rossana

9 months ago

I agree with Noemi, replication helps maintain high availability.

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Alverta

10 months ago

Properly defined user roles? That's more for security than availability. Gotta go with replication on this one.

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Alpha

10 months ago

Sharding is great for scaling, but it won't help with high availability. I'd go with replication for this one.

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Noemi

10 months ago

I think the answer is C) Replication.

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Lashaunda

10 months ago

Replication is definitely the way to go to ensure high availability. Servers can fail, but with replication, the data is always available.

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Ilene

9 months ago

I agree, replication is key for maintaining high availability in the face of server failure.

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Edmond

9 months ago

Replication is definitely the way to go to ensure high availability. Servers can fail, but with replication, the data is always available.

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