Docker New 2023 DCA Test Tutorial (Updated 170 Questions) [Q82-Q98]

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Docker New 2023 DCA Test Tutorial (Updated 170 Questions)

DCA Exam Questions Dumps, Selling Docker Products

NO.82 Two development teams in your organization use Kubernetes and want to deploy their applications while ensuring that Kubernetes-specific resources, such as secrets, are grouped together for each application.
Is this a way to accomplish this?
Solution: Create one pod and add all the resources needed for each application

Yes

NO.83 After creating a new service named ‘http’, you notice that the new service is not registering as healthy. How do you view the list of historical tasks for that service by using the command line?

‘docker inspect http’

‘docker service inspect http’

‘docker service ps http’

‘docker ps http’

NO.84 Two development teams in your organization use Kubernetes and want to deploy their applications while ensuring that Kubernetes-specific resources, such as secrets, are grouped together for each application.
Is this a way to accomplish this?
Solution: Create one namespace for each application and add all the resources to it.

Yes

NO.85 Which ‘docker run’ flag lifts cgroup limitations?

‘docker run –isolation’

‘docker run –cap-drop’

‘docker run –privileged’

‘docker run –cpu-period’

NO.86 Which statement is true about DTR garbage collection?

Garbage collection removes unreferenced image layers from DTR’s backend storage.

Garbage collection removes exited containers from cluster nodes.

Garbage collection removes DTR images that are older than a configurable of days

Garbage collection removes unused volumes from cluster nodes

NO.87 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.

NO.88 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 volume in the pod specification, populated with a perslstentVolumeClaim bound to a perslstentVolume defined by a storageClass

a storageClass In the pod’s specification, populated with a volume which Is bound to a provisioner defined by a persistentVolume

a volume in the pod specification, populated with a storageClass which is bound to a provisioner defined by a perslstentVolume

a perslstentVolume in the pod specification, populated with a persistentVolumeClaim which is bound to a volume defined by a storageClass

NO.89 Does this describe the role of Control Groups (cgroups) when used with a Docker container?
Solution: role-based access control to clustered resources

Yes

NO.90 Which one of the following commands will result in the volume being removed automatically once the container
has exited?

‘docker run –del -v /foo busybox’

‘docker run –read-only -v /foo busybox’

‘docker run –rm -v /foo busybox’

‘docker run –remove -v /foo busybox’

NO.91 Which of the following is required to install Docker EE from a package repository?

Repository URL obtained from Docker Store

License key obtained from Docker Store

Repository URL obtained from Docker Hub

License key obtained from Docker Hub

NO.92 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

NO.93 What is the difference between a resource limit and a resource reservation when scheduling services?

A resource limit and a resource reservation can be used interchangeably.

A resource limit is a soft limit for your service, while a reservation is hard limit and the docker engine will do its best to keep your service at the limit.

A resource limit is used to find a host with adequate resources for scheduling a hard limit for your service, while a reservation is hard limit for your service.

A resource limit is hard limit for your service, while a reservation is used to find a host with adequate resources for scheduling. Correct

NO.94 Is this a Linux kernel namespace that is disabled by default and must be enabled at Docker engine runtime to be used?
Solution: mnt

Yes

NO.95 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 controller managing the pod is autoscaled back to delete the unhealthy pod and alleviate load.

Yes

NO.96 The output of which command can be used to find the architecture and operating system an image is compatible with?

docker image inspect –filter {{.Architecture}} {{.OS}} ‘ <image-id>

docker image ls <image-id>

docker image inspect –format {{.Architecture}} {{.OS}} ‘ <image-id>

docker image info <image-id>

NO.97 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

NO.98 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

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