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Docker Certified Associate (DCA) certification exam is designed for professionals who want to validate their Docker skills and knowledge. Docker Certified Associate (DCA) Exam certification is offered by Docker, one of the leading containerization platforms in the world. The DCA Exam assesses the candidate's ability to build, ship, and run Docker containers, as well as their understanding of the Docker ecosystem and its associated tools.

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Free PDF Quiz Latest DCA - Exam Docker Certified Associate (DCA) Exam Topics

These Docker DCA exam questions give you an idea about the final Docker DCA exam questions formats, exam question structures, and best possible answers, and you will also enhance your exam time management skills. Finally, at the end of DCA Exam Practice test you will be ready to pass the final DCA exam easily. Best of luck in Docker Certified Associate (DCA) Exam (DCA) exam and professional career!!!

Docker Certified Associate (DCA) Exam Sample Questions (Q177-Q182):

NEW QUESTION # 177
A company's security policy specifies that development and production containers must run on separate nodes in a given Swarm cluster.
Can this be used to schedule containers to meet the security policy requirements?
Solution: label contraints

Answer: B

Explanation:
Label constraints can be used to schedule containers to meet the security policy requirements. Label constraints allow you to specify which nodes a service can run on based on the labels assigned to the nodes1. For example, you can label the nodes that are intended for development with env=dev and the nodes that are intended for production with env=prod. Then, you can use the --constraint flag when creating a service to restrict it to run only on nodes with a certain label value. For example, docker service create --name dev-app --constraint 'node.labels.env == dev' ... will create a service that runs only on development nodes2. Similarly, docker service create --name prod-app --constraint 'node.labels.env == prod' ... will create a service that runsonly on production nodes3. This way, you can ensure that development and production containers are running on separate nodes in a given Swarm cluster. Reference:
Add labels to swarm nodes
Using placement constraints with Docker Swarm
Multiple label placement constraints in docker swarm


NEW QUESTION # 178
Is this the purpose of Docker Content Trust?
Solution. Sign and verify image tags.

Answer: B

Explanation:
Explanation
Signing and verifying image tags is the purpose of Docker Content Trust. Docker Content Trust (DCT) is a feature that allows you to use digital signatures for data sent to and received from remote Docker registries.
These signatures allow client-side or runtime verification of the integrity and publisher of specific image tags.
With DCT, image publishers can sign their images and image consumers can ensure that the images they pull are signed. References: https://docs.docker.com/engine/security/trust/


NEW QUESTION # 179
Will a DTR security scan detect this?
Solution. image configuration poor practices, such as exposed ports or inclusion of compilers in production images

Answer: B

Explanation:
A DTR security scan will not detect image configuration poor practices, such as exposed ports or inclusion of compilers in production images. A DTR security scan is designed to discover vulnerabilities in the images based on the MITRE CVE or NIST NVD databases1. It does not check the image configuration or best practices. To check the image configuration and best practices, you can use other tools, such as Dockerfile Linter) or Docker Bench for Security). References: Vulnerability scanning must be enabled for all repositories in the Docker Trusted Registry (DTR) component of Docker Enterprise), Dockerfile Linter), Docker Bench for Security)


NEW QUESTION # 180
Will this command display a list of volumes for a specific container?
Solution:docker volume inspect nginx'

Answer: B

Explanation:
= The command docker volume inspect nginx will not display a list of volumes for a specific container. This is because docker volume inspect expects one or more volume names as arguments, nota container name1. To display a list of volumes for a specific container, you can use the docker inspect command with the --format option and a template that extracts the volume information fromthe container JSON output2. For example, to display the source and destination of the volumes mounted by the container nginx, you can use the following command:
docker inspect --format=' { {range .Mounts}} { {.Source}}: { {.Destination}} { {end}}' nginx
:
docker volume inspect | Docker Docs
docker inspect | Docker Docs


NEW QUESTION # 181
Will this Linux kernel facility limit a Docker container's access to host resources, such as CPU or memory?
Solution. capabilities

Answer: B

Explanation:
Explanation
Capabilities are not a Linux kernel facility that limit a Docker container's access to host resources, such as CPU or memory. Capabilities are a Linux kernel feature that divide the privileges of the root user into distinct units, called capabilities, which can be independently enabled or disabled for each process. Capabilities allow fine-grained control over the operations that a process can perform on the system, such as binding to a privileged port, changing the system time, loading kernel modules, etc. Docker uses capabilities to restrict the default set of capabilities available to the root user inside a container, following the principle of least privilege.
However, capabilities do not affect how much CPU or memory a container can use on the host system.
References: https://docs.docker.com/engine/reference/run/#runtime-privilege-and-linux-capabilities,
https://man7.org/linux/man-pages/man7/capabilities.7.html


NEW QUESTION # 182
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