Docker DCA認定試験問題集には170練習テスト問題があります [Q52-Q76]

Docker DCA認定試験問題集には170練習テスト問題があります

最新DCA試験問題集には高得点で一発合格

DCA 認定を取得するには、Docker アーキテクチャ、Docker インストールおよび構成、Docker ネットワーキング、Docker イメージとリポジトリ、Docker セキュリティ、Docker オーケストレーションなど、広範なトピックをカバーする 55 問の多肢選択式試験に合格する必要があります。この試験は、候補者が単に事実や数字を記憶する能力ではなく、実践的な Docker の知識をテストするように設計されています。

Docker DCA 認定試験の出題範囲：

トピック	出題範囲
トピック 1	利害関係者からの問題レポートのトリアージと解決
トピック 2	一元化されたレジストリに保存された既存のイメージからコンテナー化されたアプリケーションを実行
トピック 3	クラスター全体にイメージを展開
トピック 4	従来のアプリケーションをコンテナに移行

質問 # 52
Will this Linux kernel facility limit a Docker container's access to host resources, such as CPU or memory?
Solution: seccomp

A. No
B. Yes

正解：A

質問 # 53
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.

A. Yes
B. No

正解：A

質問 # 54
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

A. No
B. Yes

正解：A

質問 # 55
Will this action upgrade Docker Engine CE to Docker Engine EE?
Solution: Manually download the 'docker-ee' package

A. Yes
B. No

正解：A

質問 # 56
What behavior is expected when a service is created with the following command:
'docker service create --publish 8000:80 nginx'

A. All nodes in the cluster will listen on port 80 and forward to port 8080 in the container.
B. Only a single node in the cluster will listen on port 80 and forward to port 8080 in the container.
C. Only a single node in the cluster will listen on port 8080 and forward to port 80 in the
container.
D. All nodes in the cluster will listen on port 8080 and forward to port 80 in the container.

正解：D

質問 # 57
What behavior is expected when a service is created with the following command:
'docker service create --publish 8000:80 nginx'

A. Only a single node in the cluster will listen on port 8080 and forward to port 80 in the container.
B. All nodes in the cluster will listen on port 80 and forward to port 8080 in the container.
C. Only a single node in the cluster will listen on port 80 and forward to port 8080 in the container.
D. All nodes in the cluster will listen on port 8080 and forward to port 80 in the container.

正解：D

質問 # 58
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 storageClass is specified, and subsequently a persistentVolumeClaim is created.

A. Yes
B. No

正解：A

質問 # 59
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

A. No
B. Yes

正解：A

質問 # 60
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 this service on port 8080 will be routed to port 80 in a random pod with the label aPP: nginx.

A. Yes
B. No

正解：A

質問 # 61
Is this a function of UCP?
Solution: image role-based access control

A. No
B. Yes

正解：A

質問 # 62
A server is running low on disk space. What command can be used to check the disk usage of images, containers, and volumes for Docker engine?

A. 'docker system prune'
B. 'docker system df'
C. 'docker system ps'
D. 'docker system free'

正解：B

質問 # 63
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

A. No
B. Yes

正解：A

質問 # 64
Is this a type of Linux kernel namespace that provides container isolation?
Solution: Storage

A. No
B. Yes

正解：A

質問 # 65
Will this command display a list of volumes for a specific container?
Solution: docker container logs nginx --volumes'

A. No
B. Yes

正解：A

質問 # 66
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. No
B. Yes

正解：A

質問 # 67
Will this command mount the host's '/data' directory to the ubuntu container in read-only mode?
Solution: 'docker run --add-volume /data /mydata -read-only ubuntu'

A. No
B. Yes

正解：A

質問 # 68
Does this command create a swarm service that only listens on port 53 using the UDP protocol?
Solution: 'docker service create --name dns-cache -p 53:53/udp dns-cache'

A. Yes
B. No

正解：A

質問 # 69
Is this an advantage of multi-stage builds?
Solution: optimizes Images by copying artifacts selectively from previous stages

A. Yes
B. No

正解：A

質問 # 70
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 unhealthy container is restarted.

A. No
B. Yes

正解：A

質問 # 71
Which of the following commands wifi automatically create a volume when a container is started?

A. 'docker container run --name nginxtest -v /app:mount nginx'
B. 'docker container run --name nginxtest --volumes=/app nginx'
C. 'docker container run --name nginxtest -v myvol:/app nginx'
D. 'docker container run --name nginxtest --volumes myvol:/app:new nginx'

正解：B

質問 # 72
The output of which command can be used to find the architecture and operating system an image is
compatible with?

A. docker image inspect --filter {{.Architecture}} {{.OS}} ' <image-id>
B. docker image info <image-id>
C. docker image ls <image-id>
D. docker image inspect --format {{.Architecture}} {{.OS}} ' <image-id>

正解：D

質問 # 73
Will this command display a list of volumes for a specific container?
Solution: docker volume logs nginx --containers'

A. No
B. Yes

正解：A

質問 # 74
Which of the following is true about using the '-P' option when creating a new container?

A. Docker binds each exposed container port with the same port on the host
B. Docker gives extended privileges to the container.
C. Docker binds each exposed container port to a random port on all the host's interface
D. Docker binds each exposed container port to a random port on a specified host interface

正解：C

質問 # 75
A users attempts to set the system time from inside a Docker container are unsuccessful. Could this be blocking this operation?
Solution: Linux capabilities