Latest DCA Pass Guaranteed Exam Dumps with Accurate & Updated Questions [Q55-Q77]

Q55. Will this command ensure that overlay traffic between service tasks is encrypted?
Solution: docker network create -d overlay -o encrypted=true <network-name>

Q56. 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. Three failed health checks transition the container into “unhealthy” status.

Q57. 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: Provision a Docker config object for each environment.

Q58. The output of which command can be used to find the architecture and operating system an image is
compatible with?

Q59. When seven managers are in a swarm cluster how would they be distributed across three datacenters or availability zones?

Q60. Are these conditions sufficient for Kubernetes to dynamically provision a persistentVolume, assuming there are no limitations on the amount and type of available external storage?
Solution: A default provisioner is specified, and subsequently a persistentVolumeClaim is created.

Q61. Will this command ensure that overlay traffic between service tasks is encrypted?
Solution: docker service create –network –secure

Q62. Is this an advantage of multi-stage builds?
Solution: better caching when building Docker images

Q63. The following health check exists in a Dockerfile:
‘HEALTCHECK
CMD curl –fail http://localhost/health || exit 1′
Which of the following describes its purpose?

Q64. A Kubernetes node is allocated a /26 CIDR block (64 unique IPs) for its address space.
If every pod on this node has exactly two containers in it, how many pods can this address space support on this node?

Q65. A host machine has four CPUs available and two running containers. The sysadmin would like to assign two CPUs to each container.
Which of the following commands achieves this?

Q66. 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

Q67. Will this action upgrade Docker Engine CE to Docker Engine EE?
Solution: Uninstall ‘docker-ce’ package before installing ‘docker-ee’ package.

Q68. 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 image import <tarball> myorg/myimage:1.0

Q69. When using the Docker client to push an image to a registry, what environment variable is used to instruct the client to perform signing of the image?

Q70. Which of the following is NOT backed up when performing a Docker Trusted backup operation?

Q71. Which of the following constitutes a production-ready devicemapper configuration for the Docker engine?

Q72. Which one of the following commands will show a list of volumes for a specific container?

Q73. How do you change the default logging driver for the docker daemon in Linux?

Q74. You created a new service named ‘http’ and discover it is not registering as healthy. Will this command enable you to view the list of historical tasks for this service?
Solution: ‘docker service inspect http’

Q75. 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?

Q76. 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 describe deployment api

Q77. What is the difference between a resource limit and a resource reservation when scheduling services?