Book Image

Docker Certified Associate (DCA): Exam Guide

By : Francisco Javier Ramírez Urea
Book Image

Docker Certified Associate (DCA): Exam Guide

By: Francisco Javier Ramírez Urea

Overview of this book

Developers have changed their deployment artifacts from application binaries to container images, and they now need to build container-based applications as containers are part of their new development workflow. This Docker book is designed to help you learn about the management and administrative tasks of the Containers as a Service (CaaS) platform. The book starts by getting you up and running with the key concepts of containers and microservices. You'll then cover different orchestration strategies and environments, along with exploring the Docker Enterprise platform. As you advance, the book will show you how to deploy secure, production-ready, container-based applications in Docker Enterprise environments. Later, you'll delve into each Docker Enterprise component and learn all about CaaS management. Throughout the book, you'll encounter important exam-specific topics, along with sample questions and detailed answers that will help you prepare effectively for the exam. By the end of this Docker containers book, you'll have learned how to efficiently deploy and manage container-based environments in production, and you will have the skills and knowledge you need to pass the DCA exam.
Table of Contents (22 chapters)
1
Section 1 - Key Container Concepts
8
Section 2 - Container Orchestration
12
Section 3 - Docker Enterprise
17
Section 4 - Preparing for the Docker Certified Associate Exam

Questions

  1. Which of these statements is not true?

a) Docker Compose can run multi-service applications distributed on different services.
b) Docker Compose can run multi-container applications on a Docker host.
c) Docker Compose is a software application that is not installed with standard Docker packages.
d) All of the above are true.

  1. What can we do with docker-compose?

a) We can build all application images.
b) We can pull and push application component images.
c) We can run all application components at once.
d) All of the above.

  1. What will happen if we execute docker-compose up with a docker-compose file in which we have defined the frontend, backend, and database services? (Choose all of the correct statements out of the following options.)

a) Docker Compose will look for all the services' defined images and will pull them if they are not present in the current host.
b) Docker Compose will execute only images with the start key defined.
c) Docker Compose will run all containers...