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NEW QUESTION 1
What is the difference between the ADD and COPY dockerfile instructions? (choosen 2)
- A. ADD supports compression format handling while COPY does not.
- B. COPY supports regular expression handling while ADD does not.
- C. COPY supports compression format handling while ADD does not.
- D. ADD support remote URL handling while COPY does not.
- E. ADD supports regular expression handling while COPY does not.
NEW QUESTION 2
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 --restart omit-stopped redis'
- C. 'docker run -d --restart unless-stopped redis'
- D. 'docker run -d --failure omit-stopped redis'
NEW QUESTION 3
Which of the following statements is true about secrets?
- A. Secrets can be created from any node in the cluster.
- B. Secrets can be modified after they are created.
- C. Secret are stored unencrypted on manager nodes.
- D. Secrets can be created using standard input (STDIN) and a file.
NEW QUESTION 4
Which of the following is required to install Docker EE from a package repository?
- A. Repository URL obtained from Docker Store
- B. License key obtained from Docker Store
- C. Repository URL obtained from Docker Hub
- D. License key obtained from Docker Hub
NEW QUESTION 5
Following the principle of least privilege, which of the following methods can be used to securely grnt access to the specific user to communicate to a Docker engine? (Choose two.)
- A. Utilize the '--host 0.0.0.0:2375' option to the Docker daemon to listen on port 2375 over TCP on all interfaces
- B. Utilize openssl to create TLS client and server certificates, configuring the Docker engine to use with mutual TLS over TCP.
- C. Utilize the '--host 127.0.0.1:2375' option to the Docker daemon to listen on port 2375 over TCP on localhost
- D. Give the user root access to the server to allow them to run Docker commands as root.
- E. Add the user to the 'docker' group on the server or specify the grouè with the '--group' Docker daemon option.
NEW QUESTION 6
In Docker Trusted Registry, how would a user prevent an image, for example 'nginx:latest' from being overwritten by another user with push access to the repository?
- A. Tag the image with 'nginx:immutable'
- B. Remove push access from all other users.
- C. Use the DTR web UI to make the tag immutable.
- D. Keep a backup copy of the image on another repository.
NEW QUESTION 7
Wha is the purpose of Docker Content Trust?
- A. Signing and verification of image tags
- B. Enabling mutual TLS between the Docker client and server
- C. Docker registry TLS verification and encryption
- D. Indicating an image on Docker Hub is an official image
NEW QUESTION 8
A container named "analytics" that stores results in a volume called "data" was created. docker run -d --name=analytics -v data:/data app1
How are the results accessed in "data" with another container called "app2"?
- A. docker run -d --name=reports --volume=data app2
- B. docker run -d --name=reports --volumes-from=analytics app2
- C. docker run -d --name=reports --volume=app1 app2
- D. docker run -d --name=reports --mount=app1 app2
NEW QUESTION 9
How do you configure Docker engine to use a registry that is not configured with TLS certificates from a trusted CA?
- A. Set IGNORE_TLS in the 'daemon.json' configuration file.
- B. Set and export the IGNORE_TLS environment variable on the command line
- C. Set INSECURE_REGISTRY in the '/etc/docker/default' configuration file
- D. Pass the '--insecure.-registry' flag to the daemon at run time
NEW QUESTION 10
What service mode is used to deploy a single task of a service to each node?
- A. replicated
- B. spread
- C. universal
- D. distributed
- E. global
NEW QUESTION 11
Which one of the following commands will result in the volume being removed automatically once the container
- A. 'docker run --del -v /foo busybox'
- B. 'docker run --read-only -v /foo busybox'
- C. 'docker run --rm -v /foo busybox'
- D. 'docker run --remove -v /foo busybox'
NEW QUESTION 12
What is the docker command to find the current logging driver for a running container?
- A. docker stats
- B. docker info
- C. docker config
- D. docker inspect
NEW QUESTION 13
What is the docker command to setup a swarm?
- A. docker swarm init
- B. docker swarm create
- C. docker init swarm
- D. docker create swarm
NEW QUESTION 14
Which command interactively monitors all container activity in the Docker engine?
- A. docker system logs
- B. docker system events
- C. docker container events
- D. docker container logs
NEW QUESTION 15
What is used by the kernel to Isolate resources when running Docker containers?
- A. Namespaces
- B. Overlay networks
- C. Volumes
- D. Control groups (also know as cgroups)
NEW QUESTION 16
Which of these swarm manager configurations will cause the cluster to be in a lost quorum state?
- A. 4 managers of which 2 are healthy
- B. 1 manager of which 1 is healthy
- C. 3 managers of which 2 are healthy
- D. 5 managers of which 3 are healthy
NEW QUESTION 17
Which of the following modes can be used for service discovery of a Docker swarm service (Pick 2 correct answers)
- A. Virtual IP (VIP) with --endpoint-mode vip
- B. Overlay with --endpoint-mode overlay
- C. DNS Round-Robin with --endpoint-mode dnsrr
- D. Ingress with --endpoint-mode ingress
- E. Network Address Translation(NAT) with --endpoint-mode nat
NEW QUESTION 18
A service 'wordpress' is running using a password string to connect to a non-Dockerized database service. The password string is passed into the 'wordpress' service as a Docker secret. Per security policy, the password on the database was changed. Identity the correct sequence of steps to rotate the secret from the old password to the new password.
- A. Create a new docker secret with the new passwor
- B. Trigger a rolling secret update by using the 'docker secret update' command
- C. Trigger an update to the service by using 'docker service update --secret=<new password>'
- D. Create a new docker secret with the new passwor
- E. Remove the existing service using 'docker service rm'. Start a new service with the new secret using "--secret=<new password>"
- F. Create a new docker secret with a new passwor
- G. Trigger a rolling update of the "wordpress" service, by using "--secret-rm" & "--secret-add" to remove the old secret and add the updated secret.
NEW QUESTION 19
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 update --replicas=5 <service-id>'
- B. 'docker replica update <service-id>=5'
- C. 'docker update service <service-id>=5'
- D. 'docker service replicas <service-id>=5'
- E. 'docker service scale <service-id> = 5''
NEW QUESTION 20
Which one of the following commands will show a list of volumes for a specific container?
- A. 'docker container logs nginx --volumes'
- B. 'docker container inspect nginx'
- C. 'docker volume inspect nginx'
- D. 'docker volume logs nginx --containers'
NEW QUESTION 21
What is one way of directly transferring a Docker Image from one Docker host in another?
- A. 'docker push' the image to the IP address of the target host.
- B. 'docker commit' to save the image outside of the Docker filesyste
- C. Then transfer the file over to the target host and 'docker start' to start the container again.
- D. There is no way of directly transferring Docker images between host
- E. A Docker Registry must be used ad an intermediary.
- F. 'docker save' the image to save it as TAR file and copy it over to the target hos
- G. Then use 'docker load' to un-TAR the image back as a Docker image.
NEW QUESTION 22
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