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The DCA certification exam consists of 55 multiple-choice questions that must be completed within 90 minutes. DCA exam is available in English and Japanese and can be taken online or at a testing center. DCA exam fee is $195 USD, and candidates must achieve a passing score of 65% or higher to earn the certification. The DCA certification is valid for two years, after which candidates must renew their certification by taking a recertification exam. The DCA Certification is recognized globally and is highly valued by organizations that use Docker technologies. Earning the DCA certification can help IT professionals advance their careers and demonstrate their expertise in Docker technologies.
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Docker Certified Associate exam covers a wide range of topics including Docker architecture, container creation and management, networking, security, storage, and orchestration. DCA exam is conducted online and consists of 55 multiple-choice questions that need to be completed within 90 minutes. It is a challenging exam that requires a thorough understanding of Docker concepts and hands-on experience with Docker tools and services. Passing the DCA exam demonstrates that an individual has the skills and knowledge required to work with Docker effectively, and can help them stand out in a highly competitive job market.
Docker Certified Associate (DCA) Certification Exam is a globally recognized certification exam designed to measure an individual's proficiency in Docker technologies and practices. DCA Exam is intended for IT professionals with a strong background in containerization and Docker who are seeking to validate their skills and knowledge in this field. Successful completion of the DCA exam will certify that an individual has a deep understanding of Docker technologies and can apply them effectively in real-world scenarios.
NEW QUESTION # 133
Which statement is true?
Answer: D
NEW QUESTION # 134
You configure a local Docker engine to enforce content trust by setting the environment variable DOCKER_CONTENT_TRUST=1.
If myorg/myimage: 1.0 is unsigned, does Docker block this command?
Solution: docker image import <tarball> myorg/myimage:1.0
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 server1. DCT is enabled by setting the environment variable DOCKER_CONTENT_TRUST=1 on the Docker client. When DCT is enabled, the Docker client will only pull, run, or build images that have valid signatures for a specific tag2. However, DCT does not apply to the docker image import command, which allows users to import an image or a tarball with a repository and tag from a file or STDIN3. Therefore, if myorg/myimage:1.0 is unsigned, Docker will not block the docker image import <tarball>myorg/myimage:1.0 command, even if DCT is enabled. This is because the docker image import command does not interact with a registry or a Notary server, and thus does not perform any signature verification. However, this also means that the imported image will not have any trust data associated with it, and it will not be possible to push it to a registry with DCT enabled, unless it is signed with a valid key. References:
* Content trust in Docker
* Automation with content trust
* [docker image import]
* [Content trust and image tags]
NEW QUESTION # 135
Does this command display all the pods in the cluster that are labeled as env; development'?
Solution. 'kubectl gel pods --all-namespaces -I 'env in (development)''
Answer: A
Explanation:
Explanation
This command does display all the pods in the cluster that are labeled as env: development. The kubectl get pods command shows information about all the pods in a cluster or a specific namespace. The
--all-namespaces flag tells kubectl to include pods from all namespaces in the output. The -l flag tells kubectl to filter the output by a label selector, which is an expression that matches labels to values. The label selector
'env in (development)' matches pods that have a label env with a value development. Therefore, this command displays all the pods in the cluster that are labeled as env: development. References:
https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands#get,
https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/#label-selectors
NEW QUESTION # 136
Will this action upgrade Docker Engine CE to Docker Engine EE?
Solution: Delete '/var/lib/docker' directory.
Answer: A
Explanation:
Deleting the /var/lib/docker directory will not upgrade Docker Engine CE to Docker Engine EE. It will only remove all the data stored by Docker, such as images, containers, volumes, and networks. This can cause data loss and disrupt the running services. To upgrade from Docker Engine CE to Docker Engine EE, you need to follow the official instructions from Docker, which involve uninstalling the CE package and installing the EE package. You also need to have a valid license to use Docker Engine EE. References:
* Upgrading Docker CE to EE for the Impatient - Part I
* Install Docker Engine
* Moving from docker ce to docker-EE - Stack Overflow
NEW QUESTION # 137
Does this command display all the pods in the cluster that are labeled as 'env: development'?
Solution: 'kubectl get pods -I env=development'
Answer: A
NEW QUESTION # 138
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