Docker Exam DCA Topic 5 Question 105 Discussion

Actual exam question for Docker's DCA exam

Question #: 105
Topic #: 5

[All DCA 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?

A-995

B64

C32 in every Kubernetes namespace

D64 for every service routing to pods on this node

E32

Show Suggested 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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Elouise

6 days ago

The answer is clearly B) 64. With a /26 CIDR block, there are 64 unique IPs, and since each pod has two containers, the maximum number of pods is 64.

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Yvonne

11 days ago

I think the answer is B) 64.

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