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

Questions

As we conclude, here is a list of questions for you to test your knowledge regarding this chapter’s material. You will find the answers in the Assessments section of the Appendix:

  1. Which of the following stages are part of scheduling in Kubernetes (pick multiple)?
    1. Spreading
    2. Launching
    3. Filtering
    4. Scoring
  2. What happens if the Kubernetes scheduler cannot assign a pod to a node?
    1. It will be stuck in a CrashLoopBackOff state
    2. It will be stuck in a Pending state
    3. It will be stuck in a NotScheduled state
    4. It will be forcefully run on one of the control plane nodes
  3. Which of the following scheduler instructions will not prevent a pod from being scheduled if a condition cannot be satisfied (soft affinity or soft anti-affinity)?
    1. requiredDuringSchedulingIgnoredDuringExecution
    2. preferredDuringSchedulingIgnoredDuringExecution
    3. neededDuringSchedulingIgnoredDuringExecution
    4. softAffinity
  4. Which Kubernetes scheduler feature should be used to control how Pods are spread across different...