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NEW QUESTION # 28
Is this a type of Linux kernel namespace that provides container isolation?
Solution: Network
- A. Yes
- B. No
Answer: B
NEW QUESTION # 29
Is this a Linux kernel namespace that is disabled by default and must be enabled at Docker engine runtime to be used?
Solution: net
- A. Yes
- B. No
Answer: B
NEW QUESTION # 30
What is one way of directly transferring a Docker Image from one Docker host in another?
- A. There is no way of directly transferring Docker images between hosts. A Docker Registry must be used ad an intermediary.
- B. 'docker push' the image to the IP address of the target host.
- C. 'docker save' the image to save it as TAR file and copy it over to the target host. Then use 'docker load' to un-TAR the image back as a Docker image.
- D. 'docker commit' to save the image outside of the Docker filesystem. Then transfer the file over to the target host and 'docker start' to start the container again.
Answer: C
NEW QUESTION # 31
Which of the following commands starts a Redis container and configures it to always restart unless it is
explicitly stopped or Docker is restarted?
- A. 'docker run -d --failure omit-stopped redis'
- B. 'docker run -d --restart-policy unless-stopped redis'
- C. 'docker run -d --restart omit-stopped redis'
- D. 'docker run -d --restart unless-stopped redis'
Answer: D
NEW QUESTION # 32
You created a new service named 'http' and discover it is not registering as healthy. Will this command enable you to view the list of historical tasks for this service?
Solution: 'docker service ps http'
- A. Yes
- B. No
Answer: B
NEW QUESTION # 33
Will this command ensure that overlay traffic between service tasks is encrypted?
Solution: docker network create -d overlay --secure
- A. Yes
- B. No
Answer: B
NEW QUESTION # 34
Which of the following is true about overlay networks?
- A. Overlay networks are created only on the manager node that you created the overlay
networking on - B. Overlay networks are created on all cluster nodes when you create the overlay network.
- C. Overlay networks are first created on the manager nodes. Then they are created on the
worker nodes once a task is scheduled on the specific worker node. - D. Overlay networks are only created on the manager nodes.
Answer: B
NEW QUESTION # 35
Is this a supported user authentication method for Universal Control Plane?
Solution: PAM
- A. Yes
- B. No
Answer: B
NEW QUESTION # 36
During development of an application meant to be orchestrated by Kubernetes, you want to mount the /data directory on your laptop into a container.
Will this strategy successfully accomplish this?
Solution: Add a volume to the pod that sets hostPath.path: /data, and then mount this volume into the pod's containers as desired.
- A. Yes
- B. No
Answer: B
NEW QUESTION # 37
Will this command mount the host's '/data' directory to the ubuntu container in read-only mode?
Solution: 'docker run --add-volume /data /mydata -read-only ubuntu'
- A. Yes
- B. No
Answer: B
NEW QUESTION # 38
During development of an application meant to be orchestrated by Kubernetes, you want to mount the /data directory on your laptop into a container.
Will this strategy successfully accomplish this?
Solution: Create a PersistentVolume with storageciass: "" and hostPath: /data, and a persistentVolumeClaim requesting this PV. Then use that PVC to populate a volume in a pod
- A. No
- B. Yes
Answer: B
NEW QUESTION # 39
A server is running low on disk space. What command can be used to check the disk usage of images, containers, and volumes for Docker engine?
- A. 'docker system df'
- B. 'docker system free'
- C. 'docker system prune'
- D. 'docker system ps'
Answer: A
NEW QUESTION # 40
You want to create a container that is reachable from its host's network. Does this action accomplish this?
Solution: Use network attach to access the containers on the bridge network
- A. Yes
- B. No
Answer: B
NEW QUESTION # 41
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
Answer: B
NEW QUESTION # 42
Will this command ensure that overlay traffic between service tasks is encrypted?
Solution: docker service create --network --encrypted
- A. Yes
- B. No
Answer: B
NEW QUESTION # 43
In the context of a swarm mode cluster, does this describe a node?
Solution: a virtual machine participating in the swarm
- A. Yes
- B. No
Answer: B
NEW QUESTION # 44
What behavior is expected when a service is created with the following command:
'docker service create --publish 8000:80 nginx'
- A. Only a single node in the cluster will listen on port 8080 and forward to port 80 in the
container. - B. All nodes in the cluster will listen on port 8080 and forward to port 80 in the container.
- C. All nodes in the cluster will listen on port 80 and forward to port 8080 in the container.
- D. Only a single node in the cluster will listen on port 80 and forward to port 8080 in the container.
Answer: B
NEW QUESTION # 45
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The DCA certification exam is an objective, online-based exam that tests an individual's knowledge and practical skills in various Docker areas. The exam consists of 55 multiple choice and multiple select questions with a time limit of 90 minutes to complete. The exam is designed to be challenging and requires significant preparation before taking it. Candidates must score a minimum of 65% to pass the exam and earn the DCA certification. This certification is valid for two years and then must be renewed.
Pass Your Docker Certified Associate DCA Exam on Jul 15, 2023 with 170 Questions: https://www.exam-killer.com/DCA-valid-questions.html
Latest Docker DCA PDF and Dumps (2023) Free Exam Questions Answers: https://drive.google.com/open?id=1Fw7Q5MPFM9CsB_II2ZvRYe6wDoSqhftZ
