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 features are included in DTR?

a) Repository load balancing
b) Repository mirroring
c) Repository signing
d) All of the above

  1. How many DTR replicas do we need in order to provide high availability for Docker images' layers?

a) We will need at least three DTR replicas to provide high availability.
b) DTR does not manage the high availability of data. We need to provide third-party solutions for DTR storage.
c) DTR manages volume synchronization when we deploy more than one replica.
d) All of the above statements are true.

  1. Which processes are part of DTR?

a) garant
b) jobrunner
c) notary-client
d) auth-store

  1. Which of these statements are true in terms of how to deploy DTR with high availability?

a) Configure a load balancer as a transparent reverse proxy. We will forward all requests for DTR's FQDN to any of the replicas.
b) Deploy shared storage to allow all DTR replicas to store an image's data and meta-information at the same location.
c) Deploy...