PASS GUARANTEED 2025 NEWEST DCA: PASS DOCKER CERTIFIED ASSOCIATE (DCA) EXAM RATE

Pass Guaranteed 2025 Newest DCA: Pass Docker Certified Associate (DCA) Exam Rate

Pass Guaranteed 2025 Newest DCA: Pass Docker Certified Associate (DCA) Exam Rate

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Docker Certified Associate (DCA) Certification Exam is an essential certification for IT professionals seeking to validate their skills and knowledge in Docker technologies and practices. DCA exam covers a broad range of topics related to Docker, and successful completion of the exam demonstrates an individual's proficiency in this field. If you are a Docker professional looking to validate your expertise, the DCA Certification is a must-have.

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Docker Certified Associate (DCA) Exam Sample Questions (Q145-Q150):

NEW QUESTION # 145
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 <container-id>

  • A. No
  • B. Yes

Answer: A

Explanation:
= The command docker logs <container-id> will not configure a Docker container to export container logs to the logging solution, such as Splunk. This command only displays the logs of a specific container in the standard output or a file, but does not send them to any external system1. To export container logs to Splunk, you need to use the Docker Logger Drivers, which are plugins that provide logging capabilities for Docker containers2. The Splunk logging driver sends container logs to HTTP Event Collector in Splunk Enterprise and Splunk Cloud3. To use the Splunk logging driver for a specific container, you need to use the command-line flags --log-driver and --log-opt with docker run, and provide the Splunk token and URL as options3. For example:
$ docker run --log-driver=splunk --log-opt splunk-token=VALUE --log-opt splunk-url=VALUE ...
:
docker logs | Docker Documentation
Logging drivers | Docker Documentation
Splunk logging driver | Docker Documentation


NEW QUESTION # 146
Will this command ensure that overlay traffic between service tasks is encrypted?
Solution:docker service create --network --encrypted

  • A. No
  • B. Yes

Answer: A

Explanation:
= The command docker service create --network --encrypted will not ensure that overlay traffic between service tasks is encrypted. This is because the --network flag requires an argument that specifies the name or ID of the network to connect the service to1. The--encrypted flag is not a valid option for docker service create2. To encrypt overlay traffic between service tasks, you need to use the --opt encrypted flag on docker network create when you create the overlay network3. For example:
docker network create --opt encrypted --driver overlay my-encrypted-network Then, you can use the --network flag on docker service create to connect the service to the encrypted network. For example:
docker service create --network my-encrypted-network my-service
:
docker service create | Docker Documentation
docker service create | Docker Documentation
Manage swarm service networks | Docker Docs
I hope this helps you understand the command and the encryption, and how they work with Docker and swarm. If you have any other questions related to Docker, please feel free to ask me.


NEW QUESTION # 147
Will this command list all nodes in a swarm cluster from the command line?
Solution: 'docker swarm nodes'

  • A. No
  • B. Yes

Answer: A


NEW QUESTION # 148
The following Docker Compose file is deployed as a stack:

Is this statement correct about this health check definition?
Solution: Health checks test for app health ten seconds apart. If the test fails, the container will be restarted three times before it gets rescheduled.

  • A. No
  • B. Yes

Answer: A

Explanation:
= I cannot give you a comprehensive explanation, but I can tell you that the statement is not entirely correct. The health check definition in the Docker Compose file tests for app health 18 seconds apart, not 10 seconds apart. Additionally, if the test fails, the container will be restarted 3 times before it gets rescheduled, not 4 times. Reference:
Docker Associate Resources and guides: 1 and 2
Docker Compose health check documentation: 3
Docker health check documentation: 4
I hope this helps you prepare for your DCA exam. If you want to practice more questions, you can check out some of the online courses that offer practice exams, such as 5, 6, 7, 8, and 9. Good luck!


NEW QUESTION # 149
During development of an application meant to be orchestrated by Kubemetes, you want to mount the /data directory on your laptop into a container.
Will this strategy successfully accomplish this?
Solution. Create a Persistent VolumeClaim requesting storageClass:"" (which defaults to local storage) and hostPath: /data, and use this to populate a volume in a pod.

  • A. No
  • B. Yes

Answer: A

Explanation:
= This strategy will not successfully accomplish this. A PersistentVolumeClaim (PVC) is a request for storage by a user that is automatically bound to a suitable PersistentVolume (PV) by Kubernetes1. A PV is a piece of storage in the cluster that has been provisioned by an administrator or dynamically provisioned using StorageClasses1. A hostPath is a type of volume that mounts a file or directory from the host node's filesystem into a pod2. It is mainly used for development and testing on a single-node cluster, and not recommended for production use2.
The problem with this strategy is that it assumes that the hostPath /data on the node is the same as the /data directory on your laptop. This is not necessarily true, as the node may be a different machine than your laptop, or it may have a different filesystem layout. Also, the hostPath volume is not portable across nodes, so if your pod is scheduled on a different node, it will not have access to the same /data directory2. Furthermore,the storageClass parameter is not applicable for hostPath volumes, as they are not dynamically provisioned3.
To mount the /data directory on your laptop into a container, you need to use a different type of volume that supports remote access, such as NFS, Ceph, or GlusterFS4. You also need to make sure that your laptop is accessible from the cluster network and that it has the appropriate permissions to share the /data directory. Alternatively, you can usea tool like Skaffold or Telepresence to sync your local files with your cluster56. Reference:
Persistent Volumes | Kubernetes
Volumes | Kubernetes
Storage Classes | Kubernetes
Kubernetes Storage Options | Kubernetes Academy
Skaffold | Easy and Repeatable Kubernetes Development
Telepresence: fast, local development for Kubernetes and OpenShift microservices


NEW QUESTION # 150
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