BEST DCA VCE, DCA ONLINE TRAINING

Best DCA Vce, DCA Online Training

Best DCA Vce, DCA Online Training

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Docker DCA certification is a valuable credential for professionals who work with Docker. It demonstrates that the individual has a strong understanding of Docker and is capable of effectively using Docker to develop, deploy, and manage applications. Docker Certified Associate (DCA) Exam certification can be a valuable asset for individuals who are seeking new job opportunities or looking to advance their careers.

Docker Certified Associate (DCA) exam is a certification program offered by Docker that tests the skills and knowledge required to effectively use the Docker platform. DCA exam is designed to validate the competency of IT professionals in deploying, managing, and scaling applications using Docker containers. The DCA Certification is an industry-standard credential that is recognized globally, and it is highly sought after by IT professionals who work with Docker.

The DCA certification exam is intended for professionals who work with Docker on a daily basis, such as developers, system administrators, and DevOps engineers. It is also suitable for individuals who are interested in learning Docker and want to demonstrate their knowledge and skills to potential employers.

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Desktop-Based Docker DCA Practice Test

Another version of Docker Certified Associate (DCA) Exam (DCA) practice exams is also available at ExamPrepAway and that is web-based. It has all specifications we have discussed above in the section of the Docker DCA desktop practice test software. But the only difference is that this web-based DCA practice exam software works online and needs no software installation. Furthermore, this DCA Practice Exam is supported by both Windows and iOS, Android, Mac, and Linux. Since it is the web-based DCA practice exam, you can take it from Opera, Chrome, Safari, Firefox, or any other popular browser.

Docker Certified Associate (DCA) Exam Sample Questions (Q164-Q169):

NEW QUESTION # 164
You are running only Kubernetes workloads on a worker node that requires maintenance, such as installing patches or an OS upgrade.
Which command must be run on the node to gracefully terminate all pods on the node, while marking the node as unschedulable?

  • A. `kubectl cordon <node name>
  • B. `docker swarm leave'
  • C. `docker node update -availability drain <node name>
  • D. `kubectl drain <node name>'

Answer: D

Explanation:
The command kubectl drain <node name> is the correct one to run on the node to gracefully terminate all pods on the node, while marking the node as unschedulable. This command will safely evict all the pods from the node before you perform maintenance on the node, such as installing patches or an OS upgrade1. It will respect the PodDisruptionBudgets you have specified, if any, and allow the pod's containers to gracefully terminate1. It will also mark the node as unschedulable, so that no new pods can be scheduled on the node until it is ready1.
The other commands are not correct because:
*docker swarm leave will make the node leave the swarm cluster, but it will not affect the Kubernetes workloads on the node2.
*docker node update -availability drain <node name> will change the availability of the node to drain, which means that no new tasks can be assigned to the node, but it will not terminate the existing pods on the node3.
*kubectl cordon <node name> will mark the node as unschedulable, but it will not evict the pods on the node4.
References:
*Safely Drain a Node | Kubernetes
*[docker swarm leave | Docker Docs]
*[docker node update | Docker Docs]
*[kubectl cordon | Kubernetes Docs]


NEW QUESTION # 165
Is this a way to configure the Docker engine to use a registry without a trusted TLS certificate?
Solution. Set and export the IGNORE_TLS environment variable on the command line.

  • A. No
  • B. Yes

Answer: A

Explanation:
Explanation
Setting and exporting the IGNORE_TLS environment variable on the command line is not a way to configure the Docker engine to use a registry without a trusted TLS certificate. The IGNORE_TLS environment variable is not recognized by Docker and has no effect on its behavior. To configure the Docker engine to use a registry without a trusted TLS certificate, you need to either set INSECURE_REGISTRY in the /etc/docker/default configuration file or add --insecure-registry flag to the dockerd command. References:
https://docs.docker.com/registry/insecure/,
https://docs.docker.com/engine/reference/commandline/dockerd/#insecure-registries


NEW QUESTION # 166
An application image runs in multiple environments, with each environment using different certificates and ports.
Is this a way to provision configuration to containers at runtime?
Solution: Create images that contain the specific configuration for every environment.

  • A. No
  • B. Yes

Answer: A

Explanation:
= Creating images that contain the specific configuration for every environment is not a way to provision configuration to containers at runtime. This approach violates the principle of separating application code from configuration, and makes the images less portable and reusable across different environments1. It also increases the maintenance overhead and the risk of configuration drift, as any change in the configuration would require rebuilding and redeploying the images2. To provision configuration to containers at runtime, you should use a different mechanism, such as environment variables, command-line arguments, or config maps345. Reference:
Configuration management with Containers | Kubernetes
Environment variables in Compose | Docker Docs
Override the default command | Docker Docs
Configuration management with Containers | Kubernetes


NEW QUESTION # 167
During development of an application meant to be orchestrated by Kubernetes, you want to mount the /data directory on your laptop into a container.
Will this strategy successfully accomplish this?
Solution. Set containers. Mounts. hostBinding: /data in the container's specification.

  • A. No
  • B. Yes

Answer: A

Explanation:
The strategy will not successfully accomplish mounting the /data directory on your laptop into a container. The containers. Mounts. hostBinding: /data is not a valid syntax for specifying a bind mount in a Kubernetes container specification. According to the Kubernetes documentation), the correct way to mount a host directory into a container is to use a hostPath volume, which takes a path parameter that specifies the location on the host. For example, to mount the /data directory on your laptop into a container at /var/data, you can use the following YAML snippet:
spec:
containers:
-name:my-container
image:my-image
volumeMounts:
-name:data-volume
mountPath:/var/data
volumes:
-name:data-volume
hostPath:
path:/data
Volumes), Use bind mounts)


NEW QUESTION # 168
Is this a supported user authentication method for Universal Control Plane?
Solution.LDAP

  • A. No
  • B. Yes

Answer: B

Explanation:
= LDAP is a supported user authentication method for Universal Control Plane (UCP). UCP has its own built-in authentication mechanism and integrates with LDAP and Active Directory. It also supports Role Based Access Control (RBAC) and Docker Content Trust. UCP allows you to configure LDAP as an authentication method and connect it toyour LDAP server. You need to provide the LDAP URL, the base DN, the bind DN and password, and the user and group search settings12. Reference:
SAML | Docker Docs
Universal Control Plane overview | dockerlabs


NEW QUESTION # 169
......

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