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

Appendix B: Sample Test answers

This appendix contains the answers to the Sample Test.

Question 1, answers A, B, D
Self-healing in Kubernetes is based on controllers that operate in reconciliation loops ensuring observed state is always in sync with desired state.
Question 2, answers A, C
Seccomp and Capability dropping are Linux kernel-related technologies that can be used to secure the kinds of access namespaced containers have to the host’s kernel.
Question 3, answer C
Kubernetes has an internal DNS service it uses for service registration and service discovery.
Question 4, answers B, D
It’s always important the Kubernetes control plane is high performance and highly available.
Question 5, answer C
The Kubernetes cluster autoscaler (CA) integrates with underlying cloud platforms to dynamically add and remove worker nodes to deal with demand.
Question 6, answer C
Jaeger is a popular tool for storing and analysing trace data. It’s also...