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MongoDB C100DBA Exam - Topic 1 Question 111 Discussion

You have a replicated cluster with 1 primary, 3 secondary, 1 arbiter. One of the secondary is hidden. What is the replication factor of this replicated cluster?
C) 04
A) 7
B) 03
D) 06

MongoDB C100DBA Exam - Topic 1 Question 111 Discussion

Actual exam question for MongoDB's C100DBA exam
Question #: 111
Topic #: 1
[All C100DBA Questions]

You have a replicated cluster with 1 primary, 3 secondary, 1 arbiter. One of the secondary is hidden. What is the replication factor of this replicated cluster?

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Suggested Answer: C

by Yvonne at May 01, 2025, 08:54 PM

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Magda
7 months ago
Wait, how is it 4? I thought it was 3.
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Terrilyn
7 months ago
Totally agree, it's 4!
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Stephaine
7 months ago
Don't forget the arbiter counts too!
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Claudio
7 months ago
Yep, 4 makes sense with 1 primary and 3 secondaries.
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Meaghan
8 months ago
The replication factor is 4.
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Kandis
8 months ago
If I remember correctly, the replication factor should be the number of primaries plus secondaries, but I’m confused about the arbiter's role here.
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Kallie
8 months ago
I feel like the hidden secondary might not count towards the replication factor, but I can't recall exactly how that works.
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Sheridan
8 months ago
I remember a practice question where we calculated the replication factor, and I think it was something like the total number of nodes minus the arbiter.
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Ligia
9 months ago
I think the replication factor is related to the number of nodes, but I'm not sure how the hidden secondary affects it.
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Brianne
9 months ago
Wait, I think the hidden secondary does count. So the total number of copies is 1 primary, 4 secondaries, and 1 arbiter, which makes the replication factor 6.
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Tamra
9 months ago
Okay, I got this. The replication factor is the total number of copies of the data, including the primary and all secondaries. So with 1 primary, 3 secondaries, and 1 arbiter, the replication factor is 5.
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Anissa
9 months ago
Hmm, I'm not sure about that. Doesn't the hidden secondary still count towards the replication factor? Let me think this through again.
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Kyoko
9 months ago
I think the replication factor is 6, since there's 1 primary, 3 secondaries, and 1 arbiter. The hidden secondary doesn't count, right?
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Shaquana
1 year ago
Wait, why is there an arbiter if there are only 3 secondaries? Must be a trick question. I'll go with D just to be safe.
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Reta
11 months ago
Let's go with D then.
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Youlanda
12 months ago
Yeah, it must be a trick question with the arbiter included.
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Mollie
12 months ago
I agree, I'll go with D as well.
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Yuonne
1 year ago
I think the replication factor is 6.
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Apolonia
1 year ago
Hmm, I was going to say C, but D makes more sense. Gotta love these tricky replication questions!
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Delisa
1 year ago
Yeah, it can be tricky to keep track of all the different configurations in a replicated cluster.
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Kallie
1 year ago
I agree, D) 06 makes sense with 1 primary, 3 secondary, and 1 arbiter.
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Leana
1 year ago
I think the replication factor is D) 06.
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Chuck
1 year ago
Yeah, D) 06 makes sense with the hidden secondary included.
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Julian
1 year ago
I think the replication factor is D) 06.
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Kenneth
1 year ago
D definitely seems right. The hidden secondary doesn't count towards the replication factor, so it's 6 nodes in total.
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Beata
1 year ago
So, the replication factor for this cluster is indeed 6. The hidden secondary doesn't contribute to the replication factor count.
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Mi
1 year ago
Yes, that's correct. The replication factor is calculated based on the number of visible nodes in the cluster.
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Vallie
1 year ago
D definitely seems right. The hidden secondary doesn't count towards the replication factor, so it's 6 nodes in total.
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Joana
1 year ago
I agree with Solange, the hidden secondary and arbiter are not part of the replication factor, so it should be 4.
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Ligia
1 year ago
I think the answer is D. The replication factor is 6 since there's 1 primary, 3 secondary, and 1 arbiter.
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Ilene
1 year ago
You're welcome!
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Roxane
1 year ago
Oh, I see. Thanks for clarifying!
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Nida
1 year ago
No, the correct answer is B. The replication factor is 3 because only the secondaries count towards replication factor.
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Aleta
1 year ago
I think the answer is D. The replication factor is 6 since there's 1 primary, 3 secondary, and 1 arbiter.
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Solange
1 year ago
I think the answer is C) 04, because the hidden secondary and arbiter do not count towards the replication factor.
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Linette
1 year ago
The replication factor is 4, because we count the primary and the visible secondaries.
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