Docker Certified Associate (DCA) - DCA Exam Practice Test
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
Solution: Delete the image and delete the image repository from Docker Trusted Registry
Correct Answer: A
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Does this describe the role of Control Groups (cgroups) when used with a Docker container?
Solution: accounting and limiting of resources
Solution: accounting and limiting of resources
Correct Answer: B
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A company's security policy specifies that development and production containers must run on separate nodes in a given Swarm cluster.
Can this be used to schedule containers to meet the security policy requirements?
Solution: node affinities
Can this be used to schedule containers to meet the security policy requirements?
Solution: node affinities
Correct Answer: B
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Seven managers are in a swarm cluster.
Is this how should they be distributed across three datacenters or availability zones?
Solution: 3-3-1
Is this how should they be distributed across three datacenters or availability zones?
Solution: 3-3-1
Correct Answer: A
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Are these conditions sufficient for Kubernetes to dynamically provision a persistentVolume, assuming there are no limitations on the amount and type of available external storage?
Solution: A default storageClass is specified, and subsequently a persistentVolumeClaim is created.
Solution: A default storageClass is specified, and subsequently a persistentVolumeClaim is created.
Correct Answer: B
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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?
What must be configured correctly beforehand for this to be possible?
Correct Answer: D
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Two development teams in your organization use Kubernetes and want to deploy their applications while ensuring that Kubernetes-specific resources, such as secrets, are grouped together for each application.
Is this a way to accomplish this?
Solution. Create a collection for for each application.
Is this a way to accomplish this?
Solution. Create a collection for for each application.
Correct Answer: A
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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?
What must be configured correctly beforehand for this to be possible?
Correct Answer: D
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The following Docker Compose file is deployed as a stack:
Is this statement correct about this health check definition?
Solution: Health checks test for app health ten seconds apart. If the test fails, the container will be restarted three times before it gets rescheduled.
Is this statement correct about this health check definition?
Solution: Health checks test for app health ten seconds apart. If the test fails, the container will be restarted three times before it gets rescheduled.
Correct Answer: A
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You want to create a container that is reachable from its host's network. Does this action accomplish this?
Solution: Use --link to access the container on the bridge network.
Solution: Use --link to access the container on the bridge network.
Correct Answer: A
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Will this command mount the host's '/data1directory to the ubuntu container in read-only mode?
Solution. 'docker run -v /data:/mydata -mode readonly ubuntu'
Solution. 'docker run -v /data:/mydata -mode readonly ubuntu'
Correct Answer: A
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Will a DTR security scan detect this?
Solution.image configuration poor practices, such as exposed ports or inclusion of compilers in production images
Solution.image configuration poor practices, such as exposed ports or inclusion of compilers in production images
Correct Answer: A
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Will this action upgrade Docker Engine CE to Docker Engine EE?
Solution: Delete '/var/lib/docker' directory.
Solution: Delete '/var/lib/docker' directory.
Correct Answer: A
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The following Docker Compose file is deployed as a stack:
Is this statement correct about this health check definition?
Solution: Health checks test for app health five seconds apart. If the test fails, the container will be restarted three times before it gets rescheduled.
Is this statement correct about this health check definition?
Solution: Health checks test for app health five seconds apart. If the test fails, the container will be restarted three times before it gets rescheduled.
Correct Answer: A
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