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Docker DCA Practice Test - Questions Answers, Page 19

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List of questions

Question 181

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Will this action upgrade Docker Engine CE to Docker Engine EE?

Solution. Disable the Docker service via 'chkconfig' or 'systemctl'.

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Question 182

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Will this action upgrade Docker Engine CE to Docker Engine EE?

Solution. Run docker engine activate.

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Question 183

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Does this command display all the pods in the cluster that are labeled as env; development'?

Solution. 'kubectl gel pods --all-namespaces -I 'env in (development)''

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Question 184

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What is the difference between the ADD and COPY Dockerfile instructions? (Select two.)

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Question 185

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You set up an automatic pruning policy on a DTR repository to prune all images using Apache licenses.

What effect does this have on images in this repository?

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Question 186

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When an application being managed by UCP fails, you would like a summary of all requests made to the UCP API in the hours leading up to the failure.

What must be configured correctly beforehand for this to be possible?

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Question 187

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Two pods bear the same label, app: dev.

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

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Question 188

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Which statement is correct about cluster management in Docker Enterprise Edition 3.x?

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Question 189

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How do you change the default logging driver for the docker daemon in Linux?

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Question 190

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Some Docker images take time to build through a Continuous Integration environment. You want to speed up builds and take advantage of build caching.

Where should the most frequently changed part of a Docker image be placed in a Dockerfile?

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Total 190 questions
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Related questions

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.
Will this command display a list of volumes for a specific container? Solution. 'docker container logs nginx --volumes'
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
Will this command list all nodes in a swarm cluster from the command line? Solution. 'docker inspect nodes
Is this a supported user authentication method for Universal Control Plane? Solution. x.500
One of several containers in a pod is marked as unhealthy after failing its livenessProbe many times. Is this the action taken by the orchestrator to fix the unhealthy container? Solution: The controller managing the pod is autoscaled back to delete the unhealthy pod and alleviate load.
A user's attempts to set the system time from inside a Docker container are unsuccessful. Could this be blocking this operation? Solution. SELinux
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?
Is this a function of UCP? Solution: enforces the deployment of signed images to the cluster