# k8wiz

> Free multiple-choice quizzes and in-depth articles on Kubernetes, Helm, Kustomize, Argo CD, Flux CD, Cilium, Kyverno, Istio and cert-manager, with an explanation for every answer.

k8wiz has 650 multiple-choice questions at three levels: Beginner (Easy), Advanced (Medium) and Expert (Hard). Every question has its own page at https://k8wiz.com/uquiz/<slug> with the correct answer and an explanation, and a markdown version at the same URL with .md added. Articles cover recent Kubernetes releases and changes in cloud native tools. Every page listed here is plain markdown.

## Question banks

- [Kubernetes questions with answers](https://k8wiz.com/kubernetes/questions.md): 77 questions on Pods, Deployments, Services, scheduling, storage, networking, security and kubectl. Interactive quiz: https://k8wiz.com/kubernetes/difficulty
- [Helm questions with answers](https://k8wiz.com/helm/questions.md): 118 questions on charts, templates, values, releases, hooks, repositories and Helm 4. Interactive quiz: https://k8wiz.com/helm/difficulty
- [Kustomize questions with answers](https://k8wiz.com/kustomize/questions.md): 60 questions on overlays, patches, generators, components, replacements and kubectl apply -k. Interactive quiz: https://k8wiz.com/kustomize/difficulty
- [Argo CD questions with answers](https://k8wiz.com/argocd/questions.md): 122 questions on GitOps, Applications, sync policies, RBAC, the CLI and the v3 migration. Interactive quiz: https://k8wiz.com/argocd/difficulty
- [Flux CD questions with answers](https://k8wiz.com/fluxcd/questions.md): 60 questions on GitOps with Kustomizations, HelmReleases, sources, image automation, notifications and multi-tenancy. Interactive quiz: https://k8wiz.com/fluxcd/difficulty
- [Cilium questions with answers](https://k8wiz.com/cilium/questions.md): 48 questions on eBPF networking, network policies, Hubble, ClusterMesh, encryption and kube-proxy replacement. Interactive quiz: https://k8wiz.com/cilium/difficulty
- [Kyverno questions with answers](https://k8wiz.com/kyverno/questions.md): 52 questions on policy as code with validate, mutate, generate, verifyImages and cleanup rules. Interactive quiz: https://k8wiz.com/kyverno/difficulty
- [Istio questions with answers](https://k8wiz.com/istio/questions.md): 50 questions on service mesh traffic management, mTLS, authorization policies and ambient mode. Interactive quiz: https://k8wiz.com/istio/difficulty
- [cert-manager questions with answers](https://k8wiz.com/cert-manager/questions.md): 63 questions on Certificates, Issuers, ACME challenges, renewal and trust distribution. Interactive quiz: https://k8wiz.com/cert-manager/difficulty

## Articles

- [Migrating from Argo CD to Flux CD without downtime](https://k8wiz.com/articles/migrating-from-argo-cd-to-flux-cd-without-downtime.md): How to move applications from Argo CD to Flux CD one at a time without restarting anything: how the concepts map, how to hand running resources over safely, how to adopt Helm releases, and the…
- [Kubernetes 1.35 Timbernetes: What Breaks, What's Deprecated, and How to Upgrade Without Surprises](https://k8wiz.com/articles/kubernetes-1-35-timbernetes-what-breaks-what-s-deprecated-how-to-upgrade-without-surprises.md): Kubernetes 1.35 shipped on December 17, 2025 with a hard removal that stops kubelets from starting, a runtime end-of-life warning, and an API cleanup that demands action before you touch the upgrade…
- [ArgoCD v2 to v3: Every Breaking Change, New Feature, and Migration Step You Need to Know](https://k8wiz.com/articles/argocd-v2-to-v3-every-breaking-change-new-feature-and-migration-step-you-need-to-know.md): ArgoCD v3 landed in May 2025 and the v3.x line has been moving fast since then. The maintainers called it 'small but mighty' — and they were right. Most breaking changes are deliberate cleanups of…
- [Kubernetes 1.36: What's New, What's Gone, and What You Should Care About](https://k8wiz.com/articles/kubernetes-1-36-whats-new-whats-gone-and-what-you-should-care-about.md): Kubernetes 1.36 is the first major release of 2026, and it comes with substance. The focus is clear: better hardware-aware scheduling for AI/ML workloads, deeper DRA integration, improved node-level…
- [cgroup v1 vs cgroup v2: real differences and concrete impacts on Kubernetes workloads](https://k8wiz.com/articles/cgroup-v1-vs-cgroup-v2-real-differences-and-concrete-impacts-on-kubernetes-workloads.md): "cgroup v2 is no longer “experimental”. Most modern Linux distributions and Kubernetes releases are moving to it by default.
- [Differences and Changes Between containerd v1.x and v2.0: Impacts on Running Containers in Kubernetes](https://k8wiz.com/articles/differences-and-changes-between-containerd-v1-x-and-v2-0-impacts-on-running-containers-in-kubernetes.md): As Kubernetes clusters evolve, upgrading the underlying container runtime like containerd becomes essential for accessing new features and maintaining security. Containerd 2.0, released in 2024,…
- [Migrating from Ingress to Gateway API in Kubernetes](https://k8wiz.com/articles/migrating-from-ingress-to-gateway-api-in-kubernetes.md): Kubernetes Ingress handles external HTTP/HTTPS access but lacks advanced features like traffic splitting. Gateway API is its successor, offering better portability, extensibility, and role…
- [The Deprecation of the Ingress-NGINX Controller in 2026: Motivations, Alternatives, and Migration to Gateway API](https://k8wiz.com/articles/deprecation-of-the-ingress-nginx-controller-in-2026.md): The Ingress-NGINX controller, a popular open-source implementation for Kubernetes Ingress resources, has been a cornerstone for managing external access to services in Kubernetes clusters since its…
- [Exploring Helm 4: New Features, Changes, and Implications for Kubernetes Users](https://k8wiz.com/articles/exploring-helm-4-new-features-changes-and-implications-for-kubernetes-users.md): This article dives into the key new features, architectural changes, breaking updates, and what they mean for users. Whether you're a DevOps engineer, developer, or Kubernetes administrator,…
- [Exploring the New Features in Kubernetes 1.35: Timbernetes - The World Tree Release](https://k8wiz.com/articles/exploring-the-new-features-in-kubernetes-1-35-timbernetes-the-world-tree-release.md): Kubernetes 1.35, dubbed "Timbernetes (The World Tree Release)," was released on December 17, 2025, marking another significant milestone in the evolution of the container orchestration platform.…
- [Kyverno 1.16: Revolutionizing Kubernetes Policy as Code](https://k8wiz.com/articles/kyverno-1-16-revolutionizing-kubernetes-policy-as-code.md): Kyverno, the popular Kubernetes-native policy engine, has released version 1.16, marking a significant leap in policy management capabilities. This update focuses on advancing policy-as-code…

## Optional

- [Everything in one file](https://k8wiz.com/llms-full.txt): all articles and all questions with answers
- [RSS feed](https://k8wiz.com/feed.xml): new articles
- [Sitemap](https://k8wiz.com/sitemap.xml): every HTML page