Book Image

The KCNA Book

By : Nigel Poulton
Book Image

The KCNA Book

By: Nigel Poulton

Overview of this book

There is a huge benefit in building small, specialized, single-purpose apps that can self-heal, auto scale, and update regularly without needing downtime. Kubernetes and cloud-native technologies come in handy in building such apps. Possessing the knowledge and skills to leverage Kubernetes can positively enhance possibilities in favor of architects who specialize in cloud-native microservices applications. ‘The KCNA Book’ is designed to help those working in technology with a passion to become certified in the Kubernetes and Cloud-Native Associate Exam. You will learn about containerization, microservices, and cloud-native architecture. You will learn about Kubernetes fundamentals and container orchestration. The book also sheds light on cloud-native application delivery and observability. It focuses on the KCNA exam domains and competencies, which can be applied to the sample test included in the book. Put your knowledge to the test and enhance your skills with the all-encompassing topic coverage. Upon completion, you will begin your journey to get the best roles, projects, and organizations with this exam-oriented book.
Table of Contents (12 chapters)
9
8: Sample test
Appendix B: Sample Test answers

Chapter 3: Container orchestration

Question 1, answers A, D
Containers are similar to virtual machines. However, they share the host’s kernel making them more lightweight than virtual machines. You normally run one small, single-purpose application per container.
Question 2, answer A
Containers are smaller and more lightweight than virtual and physical machines. This means you can run more apps if you use containers.
Question 3, answer A
Containers are smaller and more lightweight than virtual machines, making them easier to package and share. Containers also package application source code and all dependencies meaning they will work the same in production as they do on a developer’s laptop – this also makes them better for sharing.
Question 4, answer B
Kubernetes and containers don’t care what languages your applications are written in.
Question 5, answer D
A container image holds application code and all dependencies.
Question 6, answer...