Docker Certified Associate Certification Training Course - Docker Compose

The video tutorial explains Docker Compose, a tool for defining and running multi-container Docker applications. It covers its features, such as automation, integration with CI/CD pipelines, and scaling. The tutorial also provides a step-by-step guide on setting up Docker Compose, including installation instructions. Examples of Docker Compose files are shown, demonstrating how to define services, expose ports, and set environment variables. The video concludes with a discussion on scaling applications and deploying stacks using Docker Compose.

What is the primary purpose of Docker Compose in a microservice-based architecture?

• To create virtual machines

• To define and run multi-container applications

• To manage a single container application

• To replace Docker Engine

Which file format does Docker Compose use to configure applications and services?

• YAML

• INI

• XML

• JSON

What feature of Docker Compose allows you to run multiple isolated environments on a single host?

• Multiple isolated environments

• Environment variables

• Data persistence

• Continuous integration

How can Docker Compose help in preserving data across container restarts?

• By using volumes

• By using environment variables

• By using Docker logs

• By using Docker files

What is a prerequisite for installing Docker Compose on a Linux host?

• A Windows operating system

• A 32-bit processor

• A virtual machine

• Docker Engine must be installed

In a Docker Compose file, what is the purpose of defining environment variables?

• To expose ports

• To manage Docker Engine

• To customize application configurations

• To create virtual machines

Which command is used to scale applications in Docker Compose?

• docker-compose down

• docker-compose scale

• docker-compose build

• docker-compose up