Discuss Docker DCA Exam Topic 6 Question 6

Two pods bear the same label, app: dev.

Will a label selector matching app: dev match both of these pods?

AYes, as long as all the containers in those pods are passing their livenessProbes and readinessProbes.

BYes, if both pods were pre-existing when the label selector was declared.

CYes, if the pods are in the same Kubernetes namespace as the object bearing the label selector

DYes, if the pods are in the same Kubernetes namespace as the object bearing the label selector and both pods were preexisting when the label selector was declared.

Suggested Answer: D

Get Premium DCA Questions as Interactive Web-Based Practice Test or PDF Real Exam Format Detailed Explanations Instant Access Get Your Practice Test

11 comments · newest first

Ryan 11 months ago

So if they have the same label, they match, right?

Gearldine 12 months ago

I think it’s more about the pods being there first.

Louvenia 12 months ago

Wait, does the namespace really matter?

Janet 12 months ago

Totally agree, it's all about the labels!

Hoa 1 year ago

Yes, label selectors match based on labels, not pod status.

Madelyn 1 year ago

I’m a bit confused about the readiness and liveness probes. Do they really affect whether the selector matches? I’m not sure about option A.

Amina 1 year ago

I practiced a similar question, and I think the key is that both pods need to exist when the selector is declared, which makes me consider option D.

Joaquin 1 year ago

I remember something about namespaces being important, but I’m not sure if that applies here. Maybe option C?

Malinda 1 year ago

I think the label selector will match both pods regardless of their state, so I’m leaning towards option A.

Tiara 1 year ago

Hmm, I'm not too sure about this one. I'll need to think it through a bit more. Maybe I should review the material on row-level security in Analytics.

Penney 1 year ago

Hmm, I'm a bit unsure about this one. I know queues, semaphores, and notifiers are all used for inter-process communication, but I can't remember if local variables fall into that category.

Docker DCA Exam - Topic 6 Question 6 Discussion