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NEW QUESTION 61
Will this action upgrade Docker Engine CE to Docker Engine EE?
Solution: Delete '/var/lib/docker' directory.
- A. Yes
- B. No
Answer: B
NEW QUESTION 62
Will this Linux kernel facility limit a Docker container's access to host resources, such as CPU or memory?
Solution: cgroups
- A. Yes
- B. No
Answer: A
NEW QUESTION 63
Which of the following is NOT backed up when performing a Docker Trusted backup operation?
- A. Repository metadata
- B. Access control to repos and images
- C. Image blobs
- D. DTR configurations
Answer: C
NEW QUESTION 64
The output of which command can be used to find the architecture and operating system an image is
compatible with?
- A. docker image ls <image-id>
- B. docker image inspect --format {{.Architecture}} {{.OS}} ' <image-id>
- C. docker image inspect --filter {{.Architecture}} {{.OS}} ' <image-id>
- D. docker image info <image-id>
Answer: B
NEW QUESTION 65
Will a DTR security scan detect this?
Solution: licenses for known third party binary components
- A. Yes
- B. No
Answer: B
NEW QUESTION 66
In the context of a swarm mode cluster, does this describe a node?
Solution: a virtual machine participating in the swarm
- A. Yes
- B. No
Answer: B
NEW QUESTION 67
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: Add all the resources to the default namespace.
- A. Yes
- B. No
Answer: B
NEW QUESTION 68
Is this a Linux kernel namespace that is disabled by default and must be enabled at Docker engine runtime to be used?
Solution: user
- A. Yes
- B. No
Answer: A
NEW QUESTION 69
From a DevOps process standpoint, it is best practice to keep changes to an application in version control. Which of the following will allow changes to a docker Image to be stored in a version control system?
- A. A dockerfile
- B. A docker-compose.yml file
- C. docker commit
- D. docker save
Answer: C
NEW QUESTION 70
Some Docker images take time to build through a Continuous Integration environment. You want to speed up builds and take advantage of build caching.
Where should the most frequently changed part of a Docker image be placed in a Dockerfile?
- A. at the top of the Dockerfile
- B. after the FROM directive
- C. in the ENTRYPOINT directive
- D. at the bottom of the Dockerfile
Answer: D
NEW QUESTION 71
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.
- A. Yes
- B. No
Answer: A
NEW QUESTION 72
A persistentVolumeClaim (PVC) is created with the specification storageClass: "", and size requirements that cannot be satisfied by any existing persistentVolume.
Is this an action Kubernetes takes in this situation?
Solution: The PVC remains unbound until a persistentVolume that matches all requirements of the PVC becomes available.
- A. Yes
- B. No
Answer: A
NEW QUESTION 73
Which of the following commands starts a Redis container and configures it to always restart unless it is explicitly stopped or Docker is restarted?
- A. 'docker run -d --restart-policy unless-stopped redis'
- B. 'docker run -d --failure omit-stopped redis'
- C. 'docker run -d --restart omit-stopped redis'
- D. 'docker run -d --restart unless-stopped redis'
Answer: A
NEW QUESTION 74
Which of the following commands starts a Redis container and configures it to always restart unless it is
explicitly stopped or Docker is restarted?
- A. 'docker run -d --failure omit-stopped redis'
- B. 'docker run -d --restart omit-stopped redis'
- C. 'docker run -d --restart-policy unless-stopped redis'
- D. 'docker run -d --restart unless-stopped redis'
Answer: D
NEW QUESTION 75
Is this a type of Linux kernel namespace that provides container isolation?
Solution: Network
- A. Yes
- B. No
Answer: B
NEW QUESTION 76
Which of the following constitutes a production-ready devicemapper configuration for the Docker engine?
- A. Create a volume group in devicemapper and utilize the '--dm.thinpooldev' Docker daemon option, specifying the volume group
- B. Nothing, devicemapper comes ready for production usage out of the box
- C. Format a partition with xfs and mount it at '/var/lib/docker'
- D. Utilize the '--storage-opt dm.directlvm_device' Docker daemon option, specifying a block device
Answer: D
Explanation:
Explanation
NEW QUESTION 77
Seven managers are in a swarm cluster.
Is this how should they be distributed across three datacenters or availability zones?
Solution: 3-2-2
- A. Yes
- B. No
Answer: A
NEW QUESTION 78
A user is having problems running Docker. Which of the following will start Docker in debug mode?
- A. Set the logging key to debug in the 'daemon.json' file.
- B. Start the 'dockerd' process manually with the '--logging' flag set to debug
- C. Set the debug key to true in the 'daemon.json' file.
- D. Start the 'dockerd' process manually with the '--raw-logs' flag set to debug
Answer: C
NEW QUESTION 79
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: resource reservation
- A. Yes
- B. No
Answer: B
NEW QUESTION 80
Wha is the purpose of Docker Content Trust?
- A. Signing and verification of image tags
- B. Indicating an image on Docker Hub is an official image
- C. Docker registry TLS verification and encryption
- D. Enabling mutual TLS between the Docker client and server
Answer: A
NEW QUESTION 81
You add a new user to the engineering organization in DTR.
Will this action grant them read/write access to the engineering/api repository?
Solution: Add them to a team in the engineering organization that has read/write access to the engineering/api repository.
- A. Yes
- B. No
Answer: B
NEW QUESTION 82
Which statement is true about DTR garbage collection?
- A. Garbage collection removes unreferenced image layers from DTR's backend storage.
- B. Garbage collection removes unused volumes from cluster nodes
- C. Garbage collection removes DTR images that are older than a configurable of days
- D. Garbage collection removes exited containers from cluster nodes.
Answer: A
NEW QUESTION 83
Will this command list all nodes in a swarm cluster from the command line?
Solution: 'docker swarm nodes'
- A. Yes
- B. No
Answer: B
NEW QUESTION 84
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