Q.1
What's the main goal for use to docker swarm or kor mesos or etc ?
  • high level of availability
  • container orchestration
  • manage multiple containers deployed
  • all of the above
Q.2
This command takes a snapshot of your current Docker container and puts it in a new image
  • docker pull
  • docker push
  • docker commit
  • docker tag
Q.3
List inactive and active containers
  • docker ps -a
  • docker ps
  • docker ps -l
  • docker ps -d
Q.4
What is the purpose of an image?
  • To provide a traditional process for an application.
  • To provide the network configuration for an application's network stack.
  • To provide the filesystem for an application.
  • To provide an isolated process for an application.
Q.5
Which of the following explains the relationship between a Docker image and Docker container?
  • A Docker container is used to start a Docker image.
  • A Docker container is a running instance of an image.
  • A Docker container is a collection of image layers.
  • A docker container is two or more images that share a common execution environment.
Q.6
What is a dangling image?
  • An intermediate part of the chain of image layer.
  • An image that's not associated with a tag.
  • An image that's not associated with a volume.
  • An image that's not associated with a running container.
Q.7
Which of the following docker commands will build a container image using instructions in a Dockerfile?
  • docker commit create
  • docker image create
  • docker image build
  • docker commit build
Q.8
Which of the following best describes a Docker Image?
  • A read-only template for starting one or more containers.
  • A data volume that can be mounted inside of a container.
  • A point-to-time snapshot of a container used for backups.
  • A read-write template for starting one or more containers.
Q.9
Which Docker CLI commands can be used in a sequence to create a Docker image?
  • docker container run, and docker container commit.
  • docker container run, and docker image commit.
  • docker container ls, and docker image commit.
  • docker container diff, and docker container commit.
Q.10
What format does Docker uses to export images?
  • Image
  • iso
  • zip
  • tar
  • dmg
Q.11
Which command allows you to access the live output of processes running inside a container?
  • docker exec
  • docker inspect
  • docker run
  • docker attach
Q.12
Which of the following correctly describes a Docker container?
  • A text file describing the dependencies of an application.
  • An online registry of Docker images.
  • An instance of an application created from a Docker image.
  • A package consisting of an application and all its dependencies.
Q.13
How does the dockerd expose the Docker API?
  • gRPC on a Unix socket.
  • As a versioned HTTP(S) REST interface.
Q.14
To delete all containers that have stopped using the command?
  • docker prune
  • docker rm -f
  • docker rmi
Q.15
What is the function of the CMD instruction if the ENTRYPOINT instruction is also used?
  • CMD instructions get ignored.
  • CMD instructions override ENTRYPOINT instructions.
  • CMD instructions get interpreted as arguments to ENTRYPOINT.
  • CMD instructions are used to create the environment in which ENTRYPOINT instructions run.
Q.16
Does Fargate on ECS support the bridge networking mode?
  • True
  • False
Q.17
Is Fargate on ECS ISOcompliant?
  • True
  • False
Q.18
What do you have to manage when running Fargate on ECS?
  • Tasks
  • Operating System
  • Updates
  • Docker Engine
Q.19
What Docker command shows running containers?
  • docker ps
  • docker images
  • docker show
  • docker list
Q.20
What Docker command do you use to create and run a container?
  • docker exec
  • docker run
  • docker pull
  • docker start
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