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. Choose all of the false statements from the following options:

a) Docker Swarm is the only orchestrator that can work with Docker.
b) Docker Swarm comes included out of the box with Docker Engine.
c) Docker Swarm will allow us to deploy applications on a pool of nodes working together, known as a cluster.
d) All of the preceding statements are false.

  1. Which of the following statements are false regarding what Swarm provides by default?

a) Service discovery
b) Internal load balancing
c) Overlay networking among distributed containers on cluster nodes
d) All of the preceding statements are false

  1. Which of the following statements are true in relation to managers?

a) We can't create replicated services with tasks running on managers.
b) There is just one leader node on each cluster that manages all Swarm cluster changes and object statuses.
c) If the leader node dies, all the changes will be frozen until the leader node is healthy again.
d) All of the preceding statements...