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Docker Exam DCA Topic 7 Question 91 Discussion

Actual exam question for Docker's Docker Certified Associate Exam exam
Question #: 91
Topic #: 7
[All Docker Certified Associate Exam Questions]

Will this configuration achieve fault tolerance for managers in a swarm?

Solution: one manager node for two worker nodes

Show Suggested Answer Hide Answer
Suggested Answer: B

Docker Swarm requires more than one manager node to achieve fault tolerance12. A single manager node is not fault tolerant because if it goes down, the entire cluster goes down3. For a swarm to be fault-tolerant, it needs to have an odd number of manager nodes2. For example, a three-manager swarm tolerates a maximum loss of one manager2. Therefore, a configuration with one manager node for two worker nodes will not achieve fault tolerance for managers in a swarm12.


by Brent at Jun 30, 2024, 08:31 PM

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Barbra
20 days ago
Haha, this question is like asking if a single parachute can support an entire skydiving team. No way, Jose! B is the only sane answer here.
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Delbert
22 days ago
This is a classic case of 'too many cooks in the kitchen'. You need a balance, not just throwing more managers at the problem. B is the way to go.
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Franklyn
29 days ago
B all the way. Gotta have more managers to spread the load and keep things running smoothly. One's just asking for trouble.
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Gail
7 days ago
B all the way. Gotta have more managers to spread the load and keep things running smoothly. One's just asking for trouble.
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Ernest
8 days ago
B
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Carman
16 days ago
A
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Ronny
1 months ago
Hmm, I don't know. Doesn't sound very robust to me. I'd want at least three manager nodes to handle failures properly.
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Avery
23 days ago
I agree, having only one manager node for two worker nodes doesn't seem very reliable.
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Fidelia
1 months ago
I agree with Huey. Having one manager node for two worker nodes can provide fault tolerance by spreading the workload and reducing the chances of failure.
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Huey
1 months ago
I think it could work. Having multiple worker nodes can help distribute the load and reduce the risk of a single point of failure.
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Belen
1 months ago
One manager node for two workers? That's like having one traffic cop for a whole highway intersection. Definitely a big no-no for fault tolerance!
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Jolanda
15 days ago
One manager node for two workers? That's like having one traffic cop for a whole highway intersection. Definitely a big no-no for fault tolerance!
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Audra
18 days ago
B) No
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Miriam
29 days ago
A) Yes
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Pearline
1 months ago
I'm not sure. It might depend on the workload and the specific setup.
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Donette
2 months ago
Do you think one manager node for two worker nodes will achieve fault tolerance?
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