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Latest Docker DCA Exam Practice Questions and Answers

Is this the purpose of Docker Content Trust?
Solution: Enable mutual TLS between the Docker client and server.
A. Yes
B. No
Correct Answer: B


In Docker Trusted Registry, is this how a user can prevent an image, such as \\’nginx:latest\\’, from being overwritten by
another user with push access to the repository? Solution: Use the DTR web Ul to make all tags in the repository
A. Yes
B. No
Correct Answer: A


Which of the following modes can be used for service discovery of a Docker swarm service (Pick 2 correct answers)
A. Virtual IP (VIP) with –endpoint-mode vip
B. Overlay with –endpoint-mode overlay
C. DNS Round-Robin with –endpoint-mode dnsrr
D. Ingress with –endpoint-mode ingress
E. Network Address Translation(NAT) with –endpoint-mode nat
Correct Answer: AC


Which set of commands can identify the publishd port(s) for a container? (Choose 1.)
A. \\’docker port inspect\\’, \\’docker container inspect\\’
B. \\’docker container inspect\\’, docker port\\’
C. \\’docker info\\’,\\’docker network inspect\\’
D. \\’docker network inspect\\’,\\’docker port\\’
Correct Answer: B


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 provisioner is specified, and
subsequently a persistentVolumeClaim is created.
A. Yes
B. No
Correct Answer: B


Will this command list all nodes in a swarm cluster from the command line? Solution: `docker Is -a\\’
A. Yes
B. No
Correct Answer: A


A users attempts to set the system time from inside a Docker container are unsuccessful. Could this be blocking this
operation? Solution: Linux capabilities
A. Yes
B. No
Correct Answer: A


Which of these swarm manager configurations will cause the cluster to be in a lost quorum state?
A. 4 managers of which 2 are healthy
B. 1 manager of which 1 is healthy
C. 3 managers of which 2 are healthy
D. 5 managers of which 3 are healthy
Correct Answer: A


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.
A. Yes
B. No
Correct Answer: B


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\\’
Correct Answer: A


Which of the following is supported by control groups?
A. Manage certificates
B. Collect net
C. Limit CPU usage within a container
D. Isolate processes in a container
Correct Answer: C


Seven managers are in a swarm cluster.
Is this how should they be distributed across three datacenters or availability zones?
Solution: 5-1-1
A. Yes
B. No
Correct Answer: B


Will this command display a list of volumes for a specific container? Solution: \\’docker container inspect nginx\\’
A. Yes
B. No
Correct Answer: A

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