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 sentences is not true?

a) Docker Content Trust is based on TUF.
b) TUF was developed to ensure software updating processes.
c) It is not possible to validate new software releases.
d) All of the preceding statements are false.

  1. Which of the following names represent Docker Content Trust keys used to validate image content?

a) Targets
b) Users
c) Groups
d) Timestamp

  1. How can we ensure that the busybox:latest release is, in fact, the latest one?

a) We cannot ensure the freshness of images.
b) busybox:latest indicates that this image is the latest one created.
c) Content Trust will validate the freshness of images; therefore, we can ensure that the host really executes the busybox:latest image, although we cannot ensure that it is the latest one.
d) All of the preceding statements are false.

  1. Why will we obtain a denied: requested access to the resource is denied error when trying to sign busybox:trusted?

a) This image does not exist.
b) We are not allowed to...