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[Hardware] DCA New Real Exam - DCA Certification Torrent

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【Hardware】 DCA New Real Exam - DCA Certification Torrent

Posted at 2 hour before      View：1 | Replies：0        Print      Only Author   [Copy Link] 1#
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Docker Certified Associate (DCA) certification exam is a challenging and rewarding certification that tests the knowledge and skills of professionals who work with Docker. Docker Certified Associate (DCA) Exam certification is recognized by leading technology companies and organizations, and provides a valuable credential for IT professionals looking to advance their careers in cloud computing, DevOps, and containerization.
Docker Certified Associate (DCA) Exam Sample Questions (Q47-Q52):NEW QUESTION # 47
Is this statement correct?
Solution: A Dockerfile provides instructions for building a Docker image
  • A. Yes
  • B. No
Answer: A
Explanation:
Explanation
A Dockerfile is a text file that contains all the commands a user could run on the command line to create an image1. A Dockerfile is composed of instructions that specify the parent image, the packages to install, the files to copy, the ports to expose, and the commands to run2. A Dockerfile can be used to build a Docker image with the docker build command3. References:
* Dockerfile reference | Docker Docs
* What is a Dockerfile? A Step-by-Step Guide [2023 Updated] - Simplilearn
* How to Build Docker Images with Dockerfile | Linuxize

NEW QUESTION # 48
Which of the following commands will create a swarm service which only listens on port 53 using the UDP protocol?
  • A. docker service create --name dns-cache -p 53:53 ..constraint
    networking.protocol.udp=true dns-cache
  • B. docker service create --name dns-cache -p 53:53 --service udp dns-cache
  • C. docker service create --name dns-cache -p 53:53 --udp dns-cache
  • D. docker service create --name dns-cache -p 53:53/udp dns-cache
Answer: D

NEW QUESTION # 49
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 inspect http"
  • A. No
  • B. Yes
Answer: A
Explanation:
The command docker inspect http will not enable you to view the list of historical tasks for the service. The docker inspect command returns low-level information on Docker objects, such as containers, images, networks, or volumes1. It does not work on services, which are higher-level objects that define the desired state of a set of tasks2. To view the list of historical tasks for a service, you need to use the docker service ps command, which shows the current and previous states of each task, as well as the node, error, and ports3. Reference:
docker inspect | Docker Docs
Services | Docker Docs
docker service ps | Docker Docs

NEW QUESTION # 50
Is this an advantage of multi-stage builds?
Solution. better logical separation of Dockerfile instructions for increased readability
  • A. No
  • B. Yes
Answer: A
Explanation:
Explanation
Better logical separation of Dockerfile instructions for increased readability is not an advantage of multi-stage builds. Multi-stage builds are a feature that allows you to use multiple FROM statements in your Dockerfile.
Each FROM statement begins a new stage of the build. You can selectively copy artifacts from one stage to another, leaving behind everything you don't want in the final image. The main advantage of multi-stage builds is that they allow you to reduce the size of your final image by only including the essential components and dependencies. Another advantage of multi-stage builds is that they allow you to optimize the build cache by grouping similar instructions in each stage. Better logical separation of Dockerfile instructions for increased readability is not an inherent advantage of multi-stage builds, as it depends on how you write and organize your Dockerfile. References: https://docs.docker.com/develop/develop-images/multistage-build/,
https://docs.docker.com/develop/ ... -multi-stage-builds

NEW QUESTION # 51
Is this the purpose of Docker Content Trust?
Solution: Verify and encrypt Docker registry TLS.
  • A. No
  • B. Yes
Answer: A
Explanation:
Explanation
Docker Content Trust (DCT) is a feature that allows users to verify the integrity and publisher of container images they pull or deploy from a registry server, signed on a Notary server12. DCT does not verify or encrypt the Docker registry TLS, which is a separate mechanism for securing the communication between the Docker client and the registry server. The purpose of DCT is to ensure that the images are not tampered with or maliciously modified by anyone other than the original publisher3. References:
* Content trust in Docker | Docker Docs
* Docker Content Trust: What It Is and How It Secures Container Images
* Automation with content trust | Docker Docs

NEW QUESTION # 52
......
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