DCAのPDF試験材料2024年最新の実際に出るDCA問題集 [Q63-Q87]

63、Will this configuration achieve fault tolerance for managers in a swarm?
Solution: only two managers, one active and one passive.

64、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 containers on the bridge network

65、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 events deployment api

66、The Kubernetes yaml shown below describes a clusterIP service.

Is this a correct statement about how this service routes requests?
Solution: Traffic sent to the IP of any pod with the label app: nginx on port 8080 will be forwarded to port 80 in that pod.

67、Will this action upgrade Docker Engine CE to Docker Engine EE?
Solution: Uninstall ‘docker-ce’ package before installing ‘docker-ee’ package.

68、Your organization has a centralized logging solution, such as Splunk.
Will this configure a Docker container to export container logs to the logging solution?
Solution: docker system events –filter splunk

69、Is this a type of Linux kernel namespace that provides container isolation?
Solution.Host

70、Which of the following is NOT backed up when performing a Docker Trusted backup operation?

71、Is this a type of Linux kernel namespace that provides container isolation?
Solution: Storage

72、Will This command list all nodes in a swarm cluster from the command line?
Solution. ‘docker swarm nodes’

73、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?

74、Will this sequence of steps completely delete an image from disk in the Docker Trusted Registry?
Solution: Delete the image and run garbage collection on the Docker Trusted Registry.

75、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?

76、Is this an advantage of multi-stage builds?
Solution: better caching when building Docker images

77、Is this an advantage of multi-stage builds?
Solution. better logical separation of Dockerfile instructions for increased readability

78、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

79、In the context of a swarm mode cluster, does this describe a node?
Solution. an instance of the Docker CLI connected to the swarm

80、Will this action upgrade Docker Engine CE to Docker Engine EE?
Solution: Uninstall ‘docker-ce’ package before installing ‘docker-ee’ package.

81、Will this command list all nodes in a swarm cluster from the command line?
Solution: ‘docker swarm nodes’

82、The Kubernetes yaml shown below describes a networkPolicy.

Will the networkPolicy BLOCK this traffic?
Solution: a request issued from a pod bearing the tier: backend label, to a pod bearing the tier: frontend label

83、Is this a supported user authentication method for Universal Control Plane?
Solution.SAML

84、The Kubernetes yaml shown below describes a clusterIP service.

Is this a correct statement about how this service routes requests?
Solution: Traffic sent to the IP of any pod with the label app: nginx on port 8080 will be forwarded to port 80 in that pod.

85、The Kubernetes yaml shown below describes a networkPolicy.

Will the networkPolicy BLOCK this trafftc?
Solution. a request issued from a pod bearing the tier: api label, to a pod bearing the tier: backend label

86、Is this statement correct?
Solution: A Dockerfile provides instructions for building a Docker image

87、Will this sequence of steps completely delete an image from disk in the Docker Trusted Registry?
Solution. Delete the image and delete the image repository from Docker Trusted Registry.