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Docker Exam DCA Topic 5 Question 105 Discussion

Actual exam question for Docker's DCA exam
Question #: 105
Topic #: 5
[All DCA Questions]

Seven managers are in a swarm cluster.

Is this how should they be distributed across three datacenters or availability zones?

Solution: 3-3-1

Show Suggested Answer Hide Answer
Suggested Answer: E

A Kubernetes node is allocated a /26 CIDR block (64 unique IPs) for its address space. This means that the node can assign up to 64 IP addresses to its resources, such as pods and containers. If every pod on this node has exactly two containers in it, then each pod will need two IP addresses, one for each container. Therefore, the node can support up to 32 pods, since 64 / 2 = 32. The other options are incorrect because they either exceed the available IP addresses or do not account for the number of containers per pod. Reference:

* CIDR Blocks and Container Engine for Kubernetes - Oracle

* How kubernetes assigns podCIDR for nodes? - Stack Overflow


by Rosendo at Jan 15, 2025, 04:16 AM

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Peggy
1 months ago
A 3-3-1 distribution? That's a lot of managers to keep track of. I hope they have a good head count system.
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Keshia
1 days ago
It does seem like a lot to manage, but having them distributed like that can help with redundancy.
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Lyda
3 days ago
User 3: No
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Cheryl
15 days ago
User 2: I agree, it does seem like a lot to manage
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Dottie
18 days ago
Yes
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Adelle
27 days ago
User 1: Yes
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Erasmo
1 months ago
The 3-3-1 solution seems logical, but I wonder if they're playing a game of 'musical chairs' with the managers.
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Antonio
2 months ago
3-3-1, huh? I guess they're trying to create the 'Three Musketeers' of data centers.
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Lenna
21 days ago
No
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Gladys
26 days ago
That's an interesting way to distribute them!
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Olive
29 days ago
Yes
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Candida
2 months ago
3-3-1 distribution across datacenters? Sounds like a magic trick - now you see them, now you don't!
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Madelyn
5 days ago
No
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Erick
19 days ago
Yes
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Sherell
20 days ago
No
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Mona
24 days ago
Yes
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Cristen
2 months ago
I disagree. I think having all managers in one datacenter would be more efficient for communication and management.
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Rodolfo
2 months ago
I agree with Lavina. Having 3-3-1 distribution makes sense for better fault tolerance.
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Lavina
2 months ago
I think the managers should be distributed evenly across the datacenters.
upvoted 0 times
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