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Docker Exam DCA Topic 4 Question 85 Discussion

Actual exam question for Docker's DCA exam
Question #: 85
Topic #: 4
[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 only the tier: frontend label, to a pod bearing the tier: backend label

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Suggested Answer: A

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 only the tier: frontend label to a pod bearing the tier: backend label will be blocked by this networkPolicy1. This is because the networkPolicy does not have a rule allowing ingress from pods with the tier: frontend label1. For more information on Kubernetes NetworkPolicies, you can refer to the Kubernetes Documentation on Network Policies.


by Lenna at Apr 20, 2024, 11:20 PM

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Mari
6 months ago
The networkPolicy specifies that only pods with 'tier: backend' label can receive traffic from pods with 'tier: frontend' label, so I think it will BLOCK the traffic.
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Stefany
6 months ago
I'm not sure, can someone explain why they think it will BLOCK or not?
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Jovita
6 months ago
I disagree, I believe the networkPolicy will not BLOCK the traffic.
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Mari
6 months ago
I think the networkPolicy will BLOCK the traffic.
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Gracia
7 months ago
No
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Marleen
7 months ago
A) Yes
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Yasuko
7 months ago
Will the networkPolicy BLOCK this traffic?
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