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MongoDB C100DBA Exam - Topic 1 Question 79 Discussion

Using an arbiter allows one to easily ensure an odd number of voters in replica sets. Why is this important?
A) To help in disaster recovery
B) To protect agains network partitions
C) To enable certain read preference settings
D) To add greather redundancy
E) For more efficient backup operations

MongoDB C100DBA Exam - Topic 1 Question 79 Discussion

Actual exam question for MongoDB's C100DBA exam
Question #: 79
Topic #: 1
[All C100DBA Questions]

Using an arbiter allows one to easily ensure an odd number of voters in replica sets. Why is this important?

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Suggested Answer: A

by Jolanda at Dec 25, 2023, 01:50 AM

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Queen
7 months ago
Helps with network partitions too, right?
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Virgie
8 months ago
Not sure about that, isn't redundancy more about data safety?
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Edmond
8 months ago
I thought it was just for redundancy, interesting!
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Marya
8 months ago
Totally agree, odd voters prevent ties.
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Madelyn
8 months ago
It's crucial for avoiding split votes!
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Myrtie
9 months ago
I vaguely remember something about read preferences, but I can't connect it to the importance of the arbiter right now.
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Lewis
9 months ago
I feel like it could also relate to redundancy, but I can't recall the specifics.
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Salina
9 months ago
I think it might be about protecting against network partitions, like we practiced in that last mock exam.
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Latrice
9 months ago
I remember discussing how having an odd number of voters helps prevent ties, but I'm not sure which option that relates to.
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Willis
9 months ago
I'm a bit lost on this one. I know the arbiter helps with the odd number of voters, but I'm not sure of the specific reasons why that's important. I'll have to review my notes and try to figure this out.
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Vivienne
9 months ago
Ah, I see. Having an odd number of voters means you can always reach a majority decision, which is crucial for things like failover and consistency. I feel good about answering this one.
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Junita
9 months ago
Okay, I think I got this. The key is that an odd number of voters ensures there can never be a tie when voting on the primary node. This prevents issues with network partitions and helps maintain availability.
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Kayleigh
9 months ago
Hmm, I'm a bit unsure about this one. I know having an odd number of voters is important, but I can't quite remember why. I'll have to think this through carefully.
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Kallie
9 months ago
This seems like a straightforward question about the importance of having an odd number of voters in a replica set. I'm pretty confident I can figure this out.
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Golda
9 months ago
This question is testing our understanding of the key inputs needed for a make-to-order production plan. I'm going to carefully consider each option and make sure I understand why D is the correct answer.
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Carmela
9 months ago
In the practice questions, we focused more on measuring shapes and profiles, which aligns with contours. I think I'll go with B too.
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Merri
10 months ago
Okay, I think I know the answer to this one. Log files typically contain information about system events, not specific virus details.
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Nan
10 months ago
I vaguely remember something about the zone names needing to match on both switches, but I can't recall the details.
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Michell
1 year ago
Using an arbiter? Pfft, I just flip a coin. Heads, I win. Tails, I still win. Gotta love that binary decision-making!
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Freeman
1 year ago
D) To add greater redundancy
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Roy
1 year ago
B) To protect against network partitions
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Ezekiel
1 year ago
A) To help in disaster recovery
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Jeanice
1 year ago
Disaster recovery, shmisaster recovery. Give me an arbiter and I'll show you how to survive any network partition. Option B for the win!
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Gerry
1 year ago
Option C seems tempting, but come on, who needs read preferences when you've got an odd number of voters? That's the real MVP right there.
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Jaime
1 year ago
C) To enable certain read preference settings
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Gianna
1 year ago
B) To protect against network partitions
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Verda
1 year ago
A) To help in disaster recovery
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Lorean
1 year ago
Ah, the age-old question of odd-numbered voters. It's like a game of 'Rock, Paper, Scissors, Arbiter' - the arbiter always wins!
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Tamar
1 year ago
Using an arbiter to ensure an odd number of voters in replica sets is important to avoid split-brain scenarios and achieve quorum during network partitions. I think option B is the correct answer.
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Nu
1 year ago
Definitely, it's a key factor in maintaining data integrity and availability.
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Margurite
1 year ago
Definitely, it's a key factor in maintaining data integrity and availability.
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Isaiah
1 year ago
Yes, it's crucial for reaching consensus and avoiding conflicts.
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Alesia
1 year ago
I agree, having an odd number of voters helps prevent tie-breaker situations.
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Tashia
1 year ago
Yes, it's crucial for reaching consensus and avoiding conflicts.
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Salena
1 year ago
I agree, having an odd number of voters helps prevent tie-breaker situations.
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Desirae
1 year ago
I believe it also helps in protecting against network partitions, making the system more resilient.
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Tasia
1 year ago
I agree with Roxanne, it helps in ensuring data consistency and availability in case of failures.
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Roxanne
1 year ago
I think having an odd number of voters is important for disaster recovery.
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Milly
1 year ago
Yes, having an arbiter ensures that there is always a majority for decision making in case of failures.
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Quentin
1 year ago
I agree, it helps in maintaining majority and avoiding split brain scenarios.
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Dorothy
1 year ago
I think having an odd number of voters is important for disaster recovery.
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