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100% Pass Quiz Docker - The Best Reliable DCA Exam Answers

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100% Pass Quiz Docker - The Best Reliable DCA Exam Answers

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Docker Certified Associate (DCA) certification exam is a vendor-neutral certification offered by Docker, Inc. Docker Certified Associate (DCA) Exam certification is designed to validate the knowledge and skills of the candidates in Docker container technology. Docker Certified Associate (DCA) Exam certification exam is intended for IT professionals who work with Docker container technology and want to validate their knowledge and skills in this field. Docker Certified Associate (DCA) Exam certification is also suitable for professionals who want to learn Docker container technology and want to validate their knowledge and skills in this field.
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Docker Certified Associate (DCA) Exam is a certification program designed for IT professionals who want to validate their skills and knowledge in using Docker technology. Docker has become an essential tool for building, shipping, and running applications across different environments. As such, the DCA Certification is highly valuable in today's job market, especially for IT professionals who want to work with containerized applications.
Docker Certified Associate (DCA) Exam Sample Questions (Q179-Q184):NEW QUESTION # 179
Is this statement correct?
Solution: A Dockerfile provides instructions for building a Docker image
  • A. Yes
  • B. No
Answer: B

NEW QUESTION # 180
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 immutable.
  • A. Yes
  • B. No
Answer: B
Explanation:
Explanation
This is not how a user can prevent an image from being overwritten by another user with push access to the repository, because making all tags in the repository immutable will also prevent the user from updating their own image tags. According to the official documentation, a better way to prevent an image from being overwritten is to use promotion policies that only allow certain users or teams to push images with specific tags.
References: https://docs.docker.com/ee/dtr/user/promotion-policies/overview/

NEW QUESTION # 181
Will this command ensure that overlay traffic between service tasks is encrypted?
Solution.docker network create -d overlay --secure <network-name>
  • A. Yes
  • B. No
Answer: B
Explanation:
= The command docker network create -d overlay --secure <network-name> will not ensure that overlay traffic between service tasks is encrypted. The --secure option is not a valid flag for the docker network create command1. To enable encryption for an overlay network, you need to use the --opt encrypted flag instead23. This will create IPSEC tunnels between the nodes where the service tasks are scheduled, using the AESalgorithm in GCM mode2. You can verify if an overlay network is encrypted by checking if the IPSEC tunnels were created using tools like netstat4. Reference:
1: docker network create | Docker Docs
2: Encrypt traffic on an overlay network | Docker Docs
3: Overlay network driver | Docker Docs
4: Docker: How to verify if an overlay network is encrypted - Stack Overflow

NEW QUESTION # 182
The following Docker Compose file is deployed as a stack:

Is this statement correct about this health check definition?
Solution. Health checks lest for app health ten seconds apart. Three failed health checks transition the container into "unhealthy" status.
  • A. Yes
  • B. No
Answer: A
Explanation:
The statement is correct. In the provided Docker Compose file, a health check is defined for the service "app".
It uses curl to perform a health check on the application every 10 seconds (as specified by the "interval" parameter). If it fails three times (as specified by the "retries" parameter), then the container is marked as unhealthy. A health check is a way of checking the health of a running container and applying actions based on the result1. It can be used to monitor the status of the service and restart the container if it becomes unhealthy2. References:
* Compose file version 3 reference | Docker Docs
* Docker Compose & Health Checks - Gabriel's World

NEW QUESTION # 183
A persistentVolumeClaim (PVC) is created with the specification storageClass: "".and size requirements that cannot be satisfied by any existing persistentVolume.
Is this an action Kubernetes takes in this situation?
Solution: Kubernetes returns an error indicating that the PVC could not be bound with the current resources.
  • A. Yes
  • B. No
Answer: A

NEW QUESTION # 184
......
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