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Docker Exam DCA Topic 4 Question 96 Discussion

Actual exam question for Docker's Docker Certified Associate Exam exam
Question #: 96
Topic #: 4
[All Docker Certified Associate Exam Questions]

A Kubernetes node is allocated a /26 CIDR block (64 unique IPs) for its

address space.

If every pod on this node has exactly two containers in it, how many pods can

this address space support on this node?

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 Alverta at Sep 10, 2024, 03:46 AM

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Alease
1 days ago
I think the answer is D) 64 for every service routing to pods on this node because each service can have multiple pods.
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Justine
3 days ago
Ah, I see what they're trying to do with the 'service routing' option, but that's not really relevant to the question. The answer is definitely 64 pods.
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Ardella
7 days ago
But if every pod has two containers, wouldn't that affect the number of pods that can be supported?
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Lyda
9 days ago
Hmm, I'm not sure about the 'every service routing to pods' part. Isn't the question just about the address space of the node itself?
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Kimberlie
10 days ago
I disagree, I believe the answer is C) 32 in every Kubernetes namespace.
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Lizbeth
17 days ago
Wait, are we supposed to consider the number of namespaces? I'm pretty sure the answer is just 64 pods, not 32 in every namespace.
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Ardella
19 days ago
I think the answer is B) 64.
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Beckie
20 days ago
The correct answer is B) 64. The /26 CIDR block provides 64 unique IP addresses, and since each pod has exactly two containers, the address space can support 64 pods.
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Freeman
7 days ago
B: Oh, I see. Thanks for clarifying!
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Desire
12 days ago
A: The answer is B) 64.
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