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 features is not included in Kubernetes by default?

a) An internal key-value store.
b) Network communication between containers distributed on different Docker hosts.
c) Controllers for deploying workload updates without service interruptions.
d) None of these features are included.

  1. Which of these statements is true about pods?

a) Pods always run in pairs to provide an application with high availability.
b) Pods are the minimum unit of deployment on Kubernetes.
c) We can deploy more than one container per pod.
d) We need to choose which containers in a pod should be replicated when pods are scaled.

  1. Which of these statements is true about pods?

a) All pod containers run using a unique network namespace.
b) All containers within a pod can share volumes.
c) All pods running on Docker Engine are accessible from the host using their IP addresses.
d) All of these statements are true.

  1. Kubernetes provides different controllers to deploy application workloads. Which...