DEVOPS · KUBERNETES · CLOUD · AI · SECURITY
Free online flashcards for developers.
Pick a topic, answer a few questions, find out what you actually know. Every card links the doc it came from, and multiple-choice cards explain why each wrong answer is wrong.
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- 67
- Decks
- 6,076
- Cards
- 21
- Certifications covered
- 2
- Learning algorithms
After a rollout every Pod has a new IP. What does a Service add?
Plant and grow your knowledge.
Four reasons people open Gnoseed. Pick the one that sounds like you.
EXAM
“I have a certification exam coming up.”
Pick the exam you are sitting. Its deck is split into the same domains as the official exam guide, so you always know which domain you are weak in — and you keep drilling it until you are not.
INTERVIEW
“I have interviews lined up.”
The question appears alone. You answer, then compare against a model answer and the points an interviewer is listening for.
ON THE JOB
“I want to stop googling the same things.”
No syllabus, nothing to configure. Open it, answer a few, close it. Cards you fumble come back sooner.
KEEPING UP
“I am behind on the new stuff.”
The decks that didn't exist two years ago. Fifteen minutes a day is enough to stop reading about them and start knowing them.
Decks picked for people who ship things.
Not a catalogue of everything — the layers you actually need to build, run and secure an application, in the order they stack up.
Foundations
The layer everything above quietly assumes you already know.
- Linux: Practical / DevOps
- Networking Fundamentals
- HTTP & Networking
- Web Performance & CDN Delivery
- Git & GitHub
Containers & orchestration
The spine of the job, and where most incidents start.
Start with Kubernetes Basics →Infrastructure as code
The part everyone writes and almost nobody debugs confidently.
- Terraform Associate: Fundamentals
- Ansible & Configuration Management
- GitOps with Argo CD & Flux
- CI/CD with GitHub Actions
Cloud & serverless
One cloud in depth beats three at surface level — the vocabulary is the exam.
Start with AWS Cloud Practitioner →Security
Where being roughly right is the same as being wrong.
- K8s Security: Cluster Hardening
- Kyverno — Kubernetes Policy Engine
- Software Supply Chain Security
- Secrets Management
- Web Security
- MITRE ATT&CK
AI engineering
Two years old, already load-bearing. Nobody has the fundamentals yet.
Start with AI & LLM Fundamentals →Get ready for your certification.
Certification decks are split along the published exam domains. As cards mature, the domain fills in. You stop guessing whether you're ready and start seeing which twenty percent you've been avoiding.
Powered by SM-2 and FSRS — the proven algorithms behind spaced repetition. Study less, remember longer, keep what you learn.
Preparing for a DevOps interview?
Recognising the right answer and producing it out loud with someone watching are not the same skill. So interview cards work differently: the question appears alone, you answer, then you compare.
Every card also names the trap — the plausible answer that quietly costs you the round.
DevOps Interview Questions and Answers →Free and open.
Walk me through how you'd run a production incident. Who does what?
Written and maintained by one developer.
Just shipped.
Secrets Management
The newest deck on Gnoseed — 113 cards across 7 modules, each one sourced to the doc it came from.
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