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DevOps Fundamentals for Developers

DevOps Fundamentals for Developers

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Which file is used to define a Docker Compose application?

.dockerignore

.env

Dockerfile

docker-compose.yaml

What is Docker Compose used for?

To orchestrate multiple containers as a single application

✅

To build Docker images

❌

To deploy containers to production

❌

To create and manage Docker containers

❌

View this question

How do you list all running containers that were created based on running Docker Compose? Run the following command:

docker-compose ps

✅

docker-compose show all

docker-compose list

docker-compose -p

Which of the following statements is- the most correct?

Docker allows you to run and build containers.

❌

Docker allows you to run containers and build images.

✅

Docker allows you to run images and build containers.

❌

Docker allows you to run and build images.

❌

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What is key features containerization?

Isolation

Scalability

All of the above

Non-Efficiency

Portability

Which Docker command allows you to create new images from an existing Dockerfile from the current directory ?

docker create -t my-apache2 .

❌

docker run -t my-apache2 .

❌

docker build -t my-apache2 .

✅

docker build -t my-apache2 ./

❌

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Which Docker command allows you to show all the containers on your system ?

docker ps -a

docker list -a

docker ps

docker list

docker show

Which Docker engine command allows you run a container named <cont_name> on port 1234 from the httpd:latest image ?

docker run --name <cont_name> -t -i -p 80:1234 httpd:latest

❌

docker run <cont_name> -t -i -p 1234:80 httpd:latest

❌

docker run --name <cont_name> -t -i -p 1234:80 httpd:2.4.23

❌

docker start --name <cont_name> -t -i -p 1234:80 httpd:latest

❌

docker run --name <cont_name> -t -i -p 1234:80 httpd:latest

✅

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Which Docker engine command allows you run CLI shell in to Docker container ?

docker run -it <container name> bash

❌

docker exec

❌

docker exec -it <container name> bash

✅

docker start -it <container name> bash

❌

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Which Docker engine command allows you delete a docker images ?

docker kill

docker rm

docker reinstall

docker rmi

docker del

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