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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
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The Kubernetes yaml shown below describes a clusterIP service. Is this a correct statement about how this service routes requests? Solution: Traffic sent to the IP of this service on port 8080 will be routed to port 80 in a random pod with the label aPP: nginx.
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?
Will this command list all nodes in a swarm cluster from the command line? Solution. 'docker inspect nodes
A user's attempts to set the system time from inside a Docker container are unsuccessful. Could this be blocking this operation? Solution. SELinux
Will this command display a list of volumes for a specific container? Solution: docker volume inspect nginx'

Question 121 - DCA discussion

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You created a new service named 'http* and discover it is not registering as healthy. Will this command enable you to view the list of historical tasks for this service?

Solution. 'docker inspect http'

A.

Yes

Answers
A.

Yes

B.

No

Answers
B.

No

Suggested answer: B

Explanation:

The commanddocker inspect httpwill not enable you to view the list of historical tasks for the service.Thedocker inspectcommand returns low-level information on Docker objects, such as containers, images, networks, or volumes1.It does not work on services, which are higher-level objects that define the desired state of a set of tasks2.To view the list of historical tasks for a service, you need to use thedocker service pscommand, which shows the current and previous states of each task, as well as the node, error, and ports3.Reference:

docker inspect | Docker Docs

Services | Docker Docs

docker service ps | Docker Docs

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asked 08/11/2024
Maryna Zarytska
30 questions
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