GET Real Docker DCA Exam Questions With 100% Refund Guarantee Dec 05, 2023 [Q15-Q36]

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GET Real Docker DCA Exam Questions With 100% Refund Guarantee Dec 05, 2023

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Docker Certified Associate (DCA) exam is a certification program designed for IT professionals who want to demonstrate their expertise in creating, deploying, and managing Docker applications. Docker Certified Associate (DCA) Exam certification is recognized globally and is highly valued by organizations that use Docker technology in their operations. The DCA exam assesses the candidate’s knowledge and skills in several areas, including Docker installation and configuration, Docker CLI commands, Docker Compose, Docker Swarm, and Docker security.

NEW QUESTION 15
Seven managers are in a swarm cluster.
Is this how should they be distributed across three datacenters or availability zones?
Solution: 3-3-1

Yes

NEW QUESTION 16
The following health check exists in a Dockerfile:
‘HEALTCHECK CMD curl –fail http://localhost/health || exit 1’
Which of the following describes its purpose?

Defines the action taken when container health fails, which in this case will kill the container with exit status 1

Defines the health check endpoint on the localhost interface for external monitoring tools to monitor the health of the docker engine.

Defines the health check endpoint on the local host interface for containers to monitor the health of the docker engine.

Defines the health check for the containerized application so that the application health can be monitored by the Docker engine

NEW QUESTION 17
You are troubleshooting a Kubernetes deployment called api, and want to see the events table for this object.
Does this command display it?
Solution: kubectl logs deployment api

Yes

NEW QUESTION 18
Will a DTR security scan detect this?
Solution. image configuration poor practices, such as exposed ports or inclusion of compilers in production images

Yes

NEW QUESTION 19
You are pulling images from a Docker Trusted Registry installation configured to use self-signed certificates, and this error appears:
‘x509: certificate signed by unknown authority’.
You already downloaded the Docker Trusted Registry certificate authority certificate from https://dtr.example.com/ca.
How do you trust it? (Select two.)

Place the certificate in ‘/etc/docker/dtr/dtr.example.com.crt’ and restart the Docker daemon on all cluster nodes.

Place the certificate in your OS certificate path, trust the certificate system-wide, and restart the Docker daemon across all cluster nodes.

Pass ‘-trust-certificate ca.crt’ to the Docker client.

Pass –insecure-registry to the Docker client.

Place the certificate in ‘/etc/docker/certs.d/dtr.example com/ca.crt’ on all cluster nodes.

NEW QUESTION 20
You want to create a container that is reachable from its host’s network.
Does this action accomplish this?
Solution. Use either EXPOSE or -publish to access the container on the bridge network.

Yes

NEW QUESTION 21
You want to provide a configuration file to a container at runtime. Does this set of Kubernetes tools and steps accomplish this?
Solution: Mount the configuration file directly into the appropriate pod and container using the
.spec.containers.configMounts key.

Yes

NEW QUESTION 22
A docker service ‘web’ is running with a scale factor of 1 (replicas = 1).
Bob intends to use the command ‘docker service update –replicas=3 web’.
Alice intends to use the command ‘docker service scale web=3’.
How do the outcomes oft these two commands differ?

Bob’s command results in an error. Alice’s command updates the number of replicas of the ‘web’ service to 3.

Bob’s command only updates the service definition, but no new replicas are started. Alice’s command
results in the actual scaling up of the ‘web’ service.

Bob’s command updates the number of replicas of the ‘web’ service to 3. Alice’s command results in an error.

Both Bob’s and Alice’s commands result in exactly the same outcome, which is 3 instances of the ‘web’ service.

NEW QUESTION 23
When seven managers are in a swarm cluster how would they be distributed across three datacenters or availability zones?

5-1-1

3-2-2

3-3-1

4-2-1

NEW QUESTION 24
One of several containers in a pod is marked as unhealthy after failing its livenessProbe many times. Is this the action taken by the orchestrator to fix the unhealthy container?
Solution: Kubernetes automatically triggers a user-defined script to attempt to fix the unhealthy container.

Yes

NEW QUESTION 25
Does this command display all the pods in the cluster that are labeled as ‘env: development’?
Solution: ‘kubectl get pods –all-namespaces -label env=development’

Yes

NEW QUESTION 26
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: Add a volume to the pod that sets hostPath.path: /data, and then mount this volume into the pod’s containers as desired.

Yes

NEW QUESTION 27
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

Yes

NEW QUESTION 28
Which statement is correct about cluster management in Docker Enterprise Edition 3.x?

Clusters can contain Windows 10 and Windows Server 2016 only.

Clusters can contain Linux, Windows Server 2016 and 2019, and Linux on IBM z Systems.

Clusters can contain Linux only.

Clusters can contain Linux and Windows Server 2008 R2 only.

NEW QUESTION 29
One of several containers in a pod is marked as unhealthy after failing its livenessProbe many times. Is this the action taken by the orchestrator to fix the unhealthy container?
Solution: The unhealthy container is restarted.

Yes

NEW QUESTION 30
Is this an advantage of multi-stage builds?
Solution: optimizes Images by copying artifacts selectively from previous stages

Yes

NEW QUESTION 31
Which of the following is true about using the ‘-P’ option when creating a new container?

Docker binds each exposed container port to a random port on all the host’s interface

Docker gives extended privileges to the container.

Docker binds each exposed container port to a random port on a specified host interface

Docker binds each exposed container port with the same port on the host

NEW QUESTION 32
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 service create myorg/myimage:1.0

Yes

NEW QUESTION 33
What is the recommended way to configure the daemon flags and environment variables for your Docker daemon in a platform independent way?

Set the configuration options using the ENV variable

Set the configuration options in ‘/etc/docker/daemon.json’

Set the configuration DOCKER_OPTS in ‘/etc/default/docker’

Using ‘docker config’ to set the configuration options.

NEW QUESTION 34
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: Create a PersistentVolume with storageciass: “” and hostPath: /data, and a persistentVolumeClaim requesting this PV. Then use that PVC to populate a volume in a pod

Yes

NEW QUESTION 35
The following Docker Compose file is deployed as a stack:

Is this statement correct about this health check definition?
Solution: Health checks test for app health ten seconds apart. If the test fails, the container will be restarted three times before it gets rescheduled.

Yes

NEW QUESTION 36
You have created a Docker bridge network on a host with three containers attached, how do you make this containers accessible outside of the host?

Use network attach to access the containers on the bridge network

Use either EXPOSE or –publish to access the containers on the bridge network

Use network connect to access the containers on the bridge network

Use –link to access the containers on the bridge network
Correct

The DCA certification is an excellent way for IT professionals to demonstrate their proficiency in containerization and Docker technology. It provides a competitive edge in the job market and opens up new career opportunities. Moreover, it ensures that organizations that use Docker technology can rely on certified professionals to design, deploy, and manage Docker containers and applications.

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GET Real Docker DCA Exam Questions With 100% Refund Guarantee Dec 05, 2023 [Q15-Q36]

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