Docker Docker Certified Associate DCA Questions & Answers

• Question 31:

  Seven managers are in a swarm cluster.

  Is this how should they be distributed across three datacenters or availability zones?

  Solution: 3-3-1

  A. Yes

  B. No

  Correct Answer: B

• Question 32:

  Will this command display a list of volumes for a specific container? Solution: docker volume logs nginx --containers'

  A. Yes

  B. No

  Correct Answer: B

• Question 33:

  Your organization has a centralized logging solution, such as Splunk.

  Will this configure a Docker container to export container logs to the logging solution?

  Solution: docker logs

  A. Yes

  B. No

  Correct Answer: B

• Question 34:

  What is the docker command to setup a swarm?

  A. docker swarm init

  B. docker swarm create

  C. docker init swarm

  D. docker create swarm

  Correct Answer: A

• Question 35:

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

  A. Set the value of log-driver to the name of the logging driver In the daemon.json In /etc/doc

  B. Use the -log-driver' flag when you run a container.

  C. At the command line, type: docker log driver set

  D. Install a logging agent on the Linux host.

  Correct Answer: D

• Question 36:

  Will this configuration achieve fault tolerance for managers in a swarm?

  Solution: an odd number of manager nodes, totaling more than two

  A. Yes

  B. No

  Correct Answer: A

• Question 37:

  The output of which command can be used to find the architecture and operating system an image is compatible with?

  A. docker image inspect --filter {{.Architecture}} {{.OS}} '

  B. docker image ls

  C. docker image inspect --format {{.Architecture}} {{.OS}} '

  D. docker image info

  Correct Answer: C

• Question 38:

  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. Yes

  B. No

  Correct Answer: A

• Question 39:

  The Kubernetes yaml shown below describes a networkPolicy.

  

  Will the networkPolicy BLOCK this traffic?

  Solution: a request issued from a pod bearing the tier: backend label, to a pod bearing the tier: frontend label

  A. Yes

  B. No

  Correct Answer: B

• Question 40:

  Will this command mount the host's '/data' directory to the ubuntu container in read-only mode? Solution: 'docker run --volume /data:/mydata:ro ubuntu'

  A. Yes

  B. No

  Correct Answer: B