Docker Certified Associate DCA Docker Exam Questions

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Docker Exam Questions

Question: 1
Which of the following commands wifi automatically create a volume when a container is started?
A. 'docker container run --name nginxtest --volumes=/app nginx'
B. 'docker container run --name nginxtest -v /app:mount nginx'
C. 'docker container run --name nginxtest --volumes myvol:/app:new nginx'
D. 'docker container run --name nginxtest -v myvol:/app nginx'
Answer: A

Question: 2
Which one of the following commands will show a list of volumes for a specific container?
A. 'docker container logs nginx --volumes'
B. 'docker container inspect nginx'
C. 'docker volume inspect nginx'
D. 'docker volume logs nginx --containers'
Answer: B

Question: 3
Which of the following constitutes a production-ready devicemapper configuration for the Docker
engine?
A. Create a volume group in devicemapper and utilize the '--dm.thinpooldev' Docker daemon
option, specifying the volume group
B. Format a partition with xfs and mount it at '/var/lib/docker'
C. Utilize the '--storage-opt dm.directlvm_device' Docker daemon option, specifying a block
device
D. Nothing, devicemapper comes ready for production usage out of the box
Answer: C

Question: 4
Which one of the following commands will result in the volume being removed automatically once
the container
has exited?
A. 'docker run --del -v /foo busybox'
B. 'docker run --read-only -v /foo busybox'
C. 'docker run --rm -v /foo busybox'
D. 'docker run --remove -v /foo busybox'
Answer: C

Question: 5
A container named "analytics" that stores results in a volume called "data" was created.
docker run -d --name=analytics -v data:/data app1
How are the results accessed in "data" with another container called "app2"?
A. docker run -d --name=reports --volume=data app2
B. docker run -d --name=reports --volumes-from=analytics app2
C. docker run -d --name=reports --volume=app1 app2
D. docker run -d --name=reports --mount=app1 app2
Answer: B