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Exam Questions and Answers for DCA Study Guide Questions and Answers!

Docker Certified Associate (DCA) Exam Certification Sample Questions and Practice Exam

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NO.99 Which ‘docker run’ flag lifts cgroup limitations?

 
 
 
 

NO.100 A host machine has four CPUs available and two running containers. The sysadmin would like to assign two CPUs to each container.
Which of the following commands achieves this?

 
 
 
 

NO.101 In the context of a swarm mode cluster, does this describe a node?
Solution: a virtual machine participating in the swarm

 
 

NO.102 Will this command display a list of volumes for a specific container?
Solution: ‘docker container inspect nginx’

 
 

NO.103 You are troubleshooting a Kubernetes deployment called api, and want to see the events table for this object. Does this command display it?
Solution: kubectl describe deployment api

 
 

NO.104 The output of which command can be used to find the architecture and operating system an image is compatible with?

 
 
 
 

NO.105 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.

 
 

NO.106 Will this action upgrade Docker Engine CE to Docker Engine EE?
Solution: Delete ‘/var/lib/docker’ directory.

 
 

NO.107 Is this statement correct?
Solution: A Dockerfile provides instructions for building a Docker image

 
 

NO.108 The output of which command can be used to find the architecture and operating system an image is
compatible with?

 
 
 
 

NO.109 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: Add all the resources to the default namespace.

 
 

NO.110 Which command interactively monitors all container activity in the Docker engine?

 
 
 
 

NO.111 Will this command display a list of volumes for a specific container?
Solution: docker volume inspect nginx’

 
 

NO.112 Will this command ensure that overlay traffic between service tasks is encrypted?
Solution: docker network create -d overlay –secure

 
 

NO.113 You add a new user to the engineering organization in DTR.
Will this action grant them read/write access to the engineering/api repository?
Solution: Add them to a team in the engineering organization that has read/write access to the engineering/api repository.

 
 

NO.114 You want to create a container that is reachable from its host’s network. Does this action accomplish this?
Solution: Use either EXPOSE or –publish to access the containers on the bridge network

 
 

NO.115 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 unhealthy container is restarted.

 
 

NO.116 What behavior is expected when a service is created with the following command:
‘docker service create –publish 8000:80 nginx’

 
 
 
 

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