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)
8: Sample test
Appendix B: Sample Test answers

Chapter 2: Cloud native architecture

Question 1, answer B
Resiliency is the ability for applications and infrastructure to self-heal.
Question 2, answer C
Applications and infrastructure can both be resilient. Kubernetes implements controllers, such as the deployment controller, to make applications resilient. Many cloud platforms allow you to build node pools that are resilient.
Question 3, answer A
Things fail all the time. Designing with failure in mind allows applications to continue working when things fail.
Question 4, answer C
Loose coupling means different components aren’t reliant on each other and can be less impacted when other components fail.
Question 5, answer D
Reconciliation is the process of synchronising observed state with desired state.
Question 6, answer A
/healthz is a common endpoint for application health checks and probes.
Question 7, answer D
Health checks are a good way to test whether an application is functioning...