Book Image

Becoming KCNA Certified

By : Dmitry Galkin
Book Image

Becoming KCNA Certified

By: Dmitry Galkin

Overview of this book

The job market related to the cloud and cloud-native technologies is both growing and becoming increasingly competitive, making certifications like KCNA a great way to stand out from the crowd and learn about the latest advancements in cloud technologies. Becoming KCNA Certified doesn't just give you the practical skills needed to deploy and connect applications in Kubernetes, but it also prepares you to pass the Kubernetes and Cloud Native Associate (KCNA) exam on your first attempt. The book starts by introducing you to cloud-native computing, containers, and Kubernetes through practical examples, allowing you to test the theory out for yourself. You'll learn how to configure and provide storage for your Kubernetes-managed applications and explore the principles of modern cloud-native architecture and application delivery, giving you a well-rounded view of the subject. Once you've been through the theoretical and practical aspects of the book, you'll get the chance to test what you’ve learnt with two mock exams, with explanations of the answers, so you'll be well-prepared to appear for the KCNA exam. By the end of this Kubernetes book, you'll have everything you need to pass the KCNA exam and forge a career in Kubernetes and cloud-native computing.
Table of Contents (22 chapters)
1
Part 1: The Cloud Era
4
Part 2: Performing Container Orchestration
7
Part 3: Learning Kubernetes Fundamentals
12
Part 4: Exploring Cloud Native
16
Part 5: KCNA Exam and Next Steps

From Cloud to Cloud Native and Kubernetes

In this chapter, you’ll see how computing has evolved over the past 20 or so years, what the cloud is and how it appeared, and how IT landscapes have changed with the introduction of containers. You’ll learn about fundamentals such as Infrastructure-as-a-Service (IaaS), Platform-as-a-Service (PaaS), Software-as-a-Service (SaaS), and Function-as-a-Service (FaaS), as well as learning about the transition from monolithic to microservice architectures and getting a first glimpse at Kubernetes.

This chapter does not map directly to a specific KCNA exam objective, but these topics are crucial for anyone who’d like to tie their career to modern infrastructures. If you are already familiar with the basic terms, feel free to quickly verify your knowledge by going directly to the recap questions. If not, don’t be surprised that things are not covered in great detail, as this is an introductory chapter, and we’ll dive deeper into all of the topics in later chapters.

We’re going to cover the following topics in this chapter:  

  • The cloud and Before Cloud (B.C.)
  • Evolution of the cloud and cloud-native
  • Containers and container orchestration
  • Monolithic versus microservices applications
  • Kubernetes and its origins

Let’s get started!