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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
Does this command create a swarm service that only listens on port 53 using the UDP protocol? Solution. 'docker service create -name dns-cache -p 53:53 -constraint networking.protocol.udp=true dns-cache'
Is this a supported user authentication method for Universal Control Plane? Solution. x.500
Will this command display a list of volumes for a specific container? Solution. 'docker container logs nginx --volumes'
Is this a way to configure the Docker engine to use a registry without a trusted TLS certificate? Solution. Set INSECURE_REGISTRY in the' /etc/docker/default' configuration file.
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 14 - DCA discussion

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Will this sequence of steps completely delete an image from disk in the Docker Trusted Registry?

Solution: Delete the image and delete the image repository from Docker Trusted Registry

A.

Yes

Answers
A.

Yes

B.

No

Answers
B.

No

Suggested answer: B

Explanation:

Deleting the image and the image repository from Docker Trusted Registry will not completely delete the image from disk. This is because deleting a repository or a tag only removes the reference to the image, but not the image itself.The image is still stored as a blob on the disk, and can be accessed by its digest1.To completely delete the image from disk, you need to enable the deletion feature in the registry configuration, and then use the API to delete the image by its manifest2.Alternatively, you can manually delete the image files from the registry storage directory, but this is not recommended3.After deleting the image, you also need to run the garbage collector to reclaim the disk space4.Reference:

Docker Registry HTTP API V2

How to delete images from a private docker registry?

Remove docker image in registry by removing files/folders on server

Garbage collection

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asked 08/11/2024
metodija durtanoski
41 questions
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