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  • Book Overview & Buying Docker Certified Associate (DCA): Exam Guide
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Docker Certified Associate (DCA): Exam Guide

Docker Certified Associate (DCA): Exam Guide

By : Francisco Javier Ramírez Urea
4.4 (5)
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Docker Certified Associate (DCA): Exam Guide

Docker Certified Associate (DCA): Exam Guide

4.4 (5)
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)
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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

Chapter 7

  1. a: Orchestrators will not know anything about your application logic. On the other hand, we have quickly reviewed the interfaces that use orchestration to ensure that containers get the appropriate volumes of data on distributed environments.
  2. c: Orchestrators will not manage application data, nor do they know anything about your application logic. The orchestrator will take care of the application components' health and will run a new instance if one of the required instances dies.
  3. a and b: Distributed environments will help us to deploy applications with high availability and improved performance. But on the other hand, we will have new challenges because we need to be able to distribute application logic and components' interactions on different nodes.
  1. a and b: Answers a and b are correct, while c is not, because application components can be managed one at a time. Therefore, upgrades will only impact one application component if the application logic knows how...

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