Docker DCAテストエンジン練習テスト問題、試験問題集
100%無料DCA日常練習試験には170問があります
質問 86
Is this a type of Linux kernel namespace that provides container isolation?
Solution: Storage
- A. Yes
- B. No
正解: B
質問 87
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
正解: B
質問 88
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
- A. No
- B. Yes
正解: B
質問 89
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
- A. No
- B. Yes
正解: B
質問 90
When an application being managed by UCP fails, you would like a summary of all requests made to the UCP API in the hours leading up to the failure.
What must be configured correctly beforehand for this to be possible?
- A. UCP logging levels must be set to the info' or debug' level.
- B. All engines in the cluster must have their log driver set to the metadata' or request' level.
- C. Set the logging level in theconfig object for the ucp-kube-api-server container to warning or higher.
- D. UCP audit logs must be set to the metadata' or request' level.
正解: D
質問 91
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.
- A. Yes
- B. No
正解: B
質問 92
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 inspect http'
- A. Yes
- B. No
正解: B
質問 93
You have deployed a service to swarm. Which command uses the Docker CLI to set the number of tasks of the services to 5? (choose 2)
- A. 'docker service replicas <service-id>=5'
- B. 'docker service update --replicas=5 <service-id>'
- C. 'docker service scale <service-id> = 5''
- D. 'docker update service <service-id>=5'
- E. 'docker replica update <service-id>=5'
正解: B,C
質問 94
You want to provide a configuration file to a container at runtime. Does this set of Kubernetes tools and steps accomplish this?
Solution: Turn the configuration file into a configMap object and mount it directly into the appropriate pod and container using the .spec.containers.configMounts key.
- A. Yes
- B. No
正解: B
質問 95
In the context of a swarm mode cluster, does this describe a node?
Solution: a physical machine participating in the swarm
- A. Yes
- B. No
正解: B
質問 96
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'
- A. No
- B. Yes
正解: B
質問 97
Is this an advantage of multi-stage builds?
Solution: optimizes Images by copying artifacts selectively from previous stages
- A. No
- B. Yes
正解: B
質問 98
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
- A. No
- B. Yes
正解: B
質問 99
Which of the following is supported by control groups?
- A. Limit CPU usage within a container
- B. Manage certificates
- C. Isolate processes in a container
- D. Collect net
正解: A
質問 100
Is this a type of Linux kernel namespace that provides container isolation?
Solution: Authentication
- A. No
- B. Yes
正解: B
質問 101
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 the user directly to the list of users with read/write access under the repository's Permissions tab.
- A. No
- B. Yes
正解: B
質問 102
You have just executed 'docker swarm leave' on a node. What command can be run on the same node to confirm it has left the cluster?
- A. docker system info
- B. docker system status
- C. docker node ls
- D. docker system status
正解: A
質問 103
When seven managers are in a swarm cluster how would they be distributed across three datacenters or availability zones?
- A. 5-1-1
- B. 4-2-1
- C. 3-2-2
- D. 3-3-1
正解: C
質問 104
Does this describe the role of Control Groups (cgroups) when used with a Docker container?
Solution: role-based access control to clustered resources
- A. Yes
- B. No
正解: B
質問 105
Which of the following is true about overlay networks?
- A. Overlay networks are created on all cluster nodes when you create the overlay network.
- B. Overlay networks are only created on the manager nodes.
- C. Overlay networks are first created on the manager nodes. Then they are created on the worker nodes once a task is scheduled on the specific worker node.
- D. Overlay networks are created only on the manager node that you created the overlay networking on
正解: A
解説:
Explanation
質問 106
What is the purpose of multi-stage builds?
- A. Faster image builds by allowing parallel execution of Docker builds
- B. Better caching when building Docker images
- C. Optimizing images by copying artifacts selectively from previous stages
- D. Better logical separation of Dockerfile instructions for better readability
正解: C
質問 107
Which of the following is required to install Docker EE from a package repository?
- A. License key obtained from Docker Store
- B. License key obtained from Docker Hub
- C. Repository URL obtained from Docker Hub
- D. Repository URL obtained from Docker Store
正解: D
質問 108
Can this set of commands identify the published port(s) for a container?
Solution: docker container inspect', 'docker port'
- A. No
- B. Yes
正解: B
質問 109
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 ps http'
- A. Yes
- B. No
正解: B
質問 110
Which of the following is NOT backed up when performing a Docker Trusted backup operation?
- A. Access control to repos and images
- B. DTR configurations
- C. Repository metadata
- D. Image blobs
正解: D
質問 111
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Docker DCA 認定試験の出題範囲：
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有効な問題最新版を試そうDCAテスト解釈DCA有効な試験ガイド：https://jp.fast2test.com/DCA-premium-file.html
DCA試験資料Docker学習ガイド：https://drive.google.com/open?id=1AaQgnmGtCs0nDky4HVa-5ec3KHnhsiR1