Discuss Docker DCA Exam Topic 6 Question 94

The Kubernetes yaml shown below describes a networkPolicy.

Will the networkPolicy BLOCK this traffic?

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

AYes

BNo

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.

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29 comments · newest first

Nancey 11 months ago

The policy should allow traffic from other labels, right?

Solange 11 months ago

Wait, are you sure about that?

Linn 12 months ago

Definitely blocks it!

Oretha 12 months ago

I think it won't block it.

Coral 1 year ago

Yes, it will block that traffic.

Alberta 1 year ago

I feel like this is tricky; I need to double-check how ingress rules work in this context.

Ona 1 year ago

If the pod doesn't have the tier: api label, then it seems like it should be blocked, right?

Stefany 1 year ago

I'm not entirely sure, but I remember a practice question where a similar policy allowed traffic only from certain pods.

Ma 1 year ago

I think the networkPolicy is set to allow traffic only from specific labels, so it might block the request.

Emerson 1 year ago

I'm feeling pretty confident about this one. The networkPolicy is set up to block traffic from pods without the "tier: api" label to pods with the "tier: backend" label, so the answer should be "Yes, the traffic will be blocked."

Dorothy 1 year ago

Okay, let's break this down step-by-step. The networkPolicy is targeting pods with the "tier: backend" label, and the question is asking about a request from a pod without the "tier: api" label. I think the answer is going to be "Yes, the traffic will be blocked."

Pamella 1 year ago

Hmm, I'm a bit confused by the YAML. I'll need to review the Kubernetes networking concepts again to make sure I understand how networkPolicies work.

Narcisa 1 year ago

I think I can figure this out. The networkPolicy seems to be targeting pods with the "tier: backend" label, so I'll need to check if the request is coming from a pod without the "tier: api" label.

Valda 1 year ago

I'm not sure about this one. The YAML looks a bit complex, and I'm not totally familiar with how networkPolicies work in Kubernetes. I'll need to think it through carefully.

Kandis 1 year ago

This looks like a straightforward data step issue. I'll carefully review the error messages and the code to determine the best approach.

Wayne 2 years ago

Haha, this kind of question is like a 'gotcha' for Kubernetes newbies. Better study those networkPolicy docs!

Jolene 2 years ago

I think the answer is B) No, but I'm not 100% sure. I'll double-check the networkPolicy syntax just to be sure.

Ezekiel 1 year ago

↳ replying to Jolene

User 3: The networkPolicy will not block the traffic because it allows requests from pods with the tier: api label to pods with the tier: backend label.

Rosio 1 year ago

↳ replying to Jolene

User 2: I agree, let's double-check the networkPolicy syntax to be sure.

Weldon 1 year ago

↳ replying to Jolene

User 1: I believe the answer is B) No.

Youlanda 2 years ago

The question is a bit misleading. We need to look at the actual networkPolicy configuration, not just the question itself.

Jacklyn 1 year ago

↳ replying to Youlanda

I disagree, I believe it will not block the traffic.

Tamra 1 year ago

↳ replying to Youlanda

B) No

Bernardine 1 year ago

↳ replying to Youlanda

I think it will block the traffic.

Noe 1 year ago

↳ replying to Youlanda

A) Yes

Gerry 2 years ago

Hmm, this seems tricky. I'll have to carefully analyze the networkPolicy definition to determine if it will block the specified traffic.

Tawny 2 years ago

I'm not sure, but I think the networkPolicy will allow the traffic.

Milly 2 years ago

I agree with Domonique, because the request doesn't meet the criteria specified in the yaml.

Domonique 2 years ago

I think the networkPolicy will block the traffic.

Docker DCA Exam - Topic 6 Question 94 Discussion