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DCA Passing Score Feedback - DCA Test Dumps

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Docker Certified Associate (DCA) Exam Sample Questions (Q109-Q114):

NEW QUESTION # 109
The following health check exists in a Dockerfile:
'HEALTCHECK CMD curl --fail http://localhost/health || exit 1'
Which of the following describes its purpose?

A. Defines the action taken when container health fails, which in this case will kill the container with exit status 1
B. Defines the health check for the containerized application so that the application health can be monitored by the Docker engine
C. Defines the health check endpoint on the localhost interface for external monitoring tools to monitor the health of the docker engine.
D. Defines the health check endpoint on the local host interface for containers to monitor the health of the docker engine.

Answer: A

NEW QUESTION # 110
You want to mount external storage to a particular filesystem path in a container in a Kubernetes pod.
What is the correct set of objects to use for this?

A. a storageClass in the pod's specification, populated with a volume which is bound to a provisioner defined by a persistentVolume
B. a volume in the pod specification, populated with a persistentVolumeClaim bound to a persistentVolume defined by a storageClass
C. a persistentVolume in the pod specification, populated with a persistentVolumeClaim which is bound to a volume defined by a storageClass
D. a volume in the pod specification, populated with a storageClass which is bound to a provisioner defined by a persistentVolume

Answer: B

Explanation:
Explanation
In Kubernetes, to mount external storage to a filesystem path in a container within a pod, you would use a volume in the pod specification. This volume is populated with a persistentVolumeClaim that is bound to an existing persistentVolume. The persistentVolume is defined and managed by the storageClass which provides dynamic or static provisioning of the volume and determines what type of storage will be provided1.
References:
*Dynamic Volume Provisioning | Kubernetes

NEW QUESTION # 111
Is this a supported user authentication method for Universal Control Plane?
Solution: PAM

A. No
B. Yes

Answer: A

NEW QUESTION # 112
Is this the purpose of Docker Content Trust?
Solution: Enable mutual TLS between the Docker client and server.

A. No
B. Yes

Answer: A

Explanation:
Explanation
Enabling mutual TLS between the Docker client and server is not the purpose of Docker Content Trust.
According to the official documentation, the purpose of Docker Content Trust is to verify the integrity and publisher of all data received from a registry over any channel.
References: https://docs.docker.com/engine/security/trust/content_trust/

NEW QUESTION # 113
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

A. No
B. Yes

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 # 114
......

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