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Docker Exam DCA Topic 5 Question 108 Discussion

Actual exam question for Docker's DCA exam
Question #: 108
Topic #: 5
[All DCA Questions]

The Kubernetes yaml shown below describes a networkPolicy.

Will the networkPolicy BLOCK this trafftc?

Solution. a request issued from a pod bearing the tier: api label, to a pod bearing the tier: backend label

Show Suggested Answer Hide Answer
Suggested Answer: B

The provided Kubernetes NetworkPolicy YAML configuration indicates that the policy applies to pods with the label tier: backend in the default namespace1. The ingress rule allows traffic from pods with the label tier: api1. Therefore, a request issued from a pod bearing the tier: api label to a pod bearing the tier: backend label will not be blocked by this networkPolicy1. This is because the networkPolicy explicitly allows ingress from pods with the tier: api label1. For more information on Kubernetes Network


by Maryanne at Mar 08, 2025, 11:58 AM

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Chaya
Haha, the Kubernetes folks sure love to make things complicated, don't they? I'm going with B) No, just to keep things simple.
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Sharika
1 days ago
Wait, what? This question is making my head spin. I need to take a break and get some coffee before I tackle this one.
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Linwood
2 days ago
I think the answer is B) No. The networkPolicy doesn't seem to have any rules that would block traffic from the 'api' pods to the 'backend' pods.
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Claribel
7 days ago
Hmm, I see your point. Maybe I misunderstood the yaml configuration.
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Yvette
11 days ago
I agree with Audria, the networkPolicy seems to be configured to block the traffic.
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Audria
13 days ago
But the solution mentions that it will block traffic between pods with specific labels.
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Dell
19 days ago
Hmm, this looks like a trick question. The networkPolicy description doesn't specify the direction of the traffic, so I'm not sure if it will block the traffic or not.
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Antione
3 days ago
I agree, it's not clear from the description. It could go either way.
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Phuong
4 days ago
B) No
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Elin
7 days ago
A) Yes
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Claribel
19 days ago
I disagree, I believe the networkPolicy will not block the traffic.
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Audria
29 days ago
I think the networkPolicy will block the traffic.
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