Spaced-repetition flashcards for developers

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From Kubernetes to Terraform — practical questions written by a developer, drilled with Gnoseed's spaced repetition so the concepts stick for good.

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CLUSTER ARCHITECTURE
1 / 4
Question 1

What is the primary function of the kube-scheduler?

ABCD 4 answers to choose from
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JavaScript · Question 1

What does typeof "hello" return?

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Browse by category

Pick a category, dive into the quizzes

2,944 questions across 23 categories. Each category holds a set of focused quizzes you can drill independently.

K8s5 quizzes

Kubernetes

Cluster architecture, workloads, networking, storage, config and security — plus ops and real-world scenarios.

424 questions Start
AI5 quizzes

AI & LLMs

How models work, prompt engineering, building apps, customizing and deploying LLMs in production.

411 questions Start
Lnx4 quizzes

Linux

Practical DevOps Linux, Bash & shell scripting, plus the full LPIC-1 101 & 102 exam objectives.

292 questions Start
GitNew2 quizzes

Git & GitHub

Version control with Git and collaboration on GitHub — branching, merging, remotes, pull requests, GitHub Actions, and repository governance.

183 questions Start
DSO1 quiz

DevSecOps

Shift-left culture, the software factory and CI/CD, containers and service mesh, zero trust, and cATO governance.

161 questions Start
TF2 quizzes

Terraform

HashiCorp Terraform Associate — fundamentals through advanced state and modules.

155 questions Start
HTTP2 quizzes

HTTP & Networking

Protocols, status codes, headers, TLS and the request lifecycle — plus the nginx web server and reverse proxy.

147 questions Start
AWSNew1 quiz

AWS Cloud Practitioner

Cloud fundamentals for the CLF-C02 exam — cloud concepts and economics, the shared responsibility model and IAM, core compute, storage, networking and database services, global infrastructure, and billing, pricing and support.

110 questions Start
MFE1 quiz

Micro-Frontends

Frontend architecture at scale — the landscape, principles, DDD, composition, communication and modern tooling.

101 questions Start
ArgoNew1 quiz

GitOps

Continuous delivery the GitOps way — the OpenGitOps principles, Argo CD and the Application model, repo patterns and sync strategies, and the Flux toolkit for multi-cluster.

90 questions Start
AnsNew1 quiz

Ansible

Agentless configuration management — inventory, modules and idempotency, playbooks with handlers and Jinja2 templates, roles and collections, plus Vault, loops and privilege escalation.

90 questions Start
H1 quiz

Helm

Charts, templating, releases, values and the Helm package workflow.

81 questions Start
Py1 quiz

Python

Types and data structures, control flow, functions, OOP and the gotchas every Pythonista should know.

80 questions Start
SQLNew1 quiz

SQL

Queries, joins, aggregation, window functions, data modeling and transactions — standard SQL for every engine.

80 questions Start
PG1 quiz

PostgreSQL

JSONB, index strategies, EXPLAIN, MVCC and vacuum, and the day-two operations of the world’s favorite open-source database.

80 questions Start
SM1 quiz

Service Mesh

Sidecars and ambient mode, traffic management, mTLS, resilience and mesh observability — Istio and Linkerd concepts.

80 questions Start
Prom1 quiz

Prometheus

Metrics, PromQL, exporters, alerting and observability fundamentals.

73 questions Start
Go1 quiz

Go

Syntax, goroutines, channels, interfaces and idiomatic Go patterns.

66 questions Start
D1 quiz

Docker

Images, layers, Dockerfiles, volumes, networks and container basics.

62 questions Start
Obs1 quiz

Observability

The three signals and RED/USE, structured logging and Loki, distributed tracing with spans and sampling, OpenTelemetry, and Grafana.

54 questions Start
Sec1 quiz

Secure Coding

Authentication, access control, input validation, crypto and safe logging — app-security fundamentals.

51 questions Start
SRE1 quiz

SRE

Reliability targets and error budgets, incident management, toil and automation, DORA metrics, and resilience practices.

50 questions Start
JS1 quiz

JavaScript

Types, scope, closures, async and the quirks every dev should know.

23 questions Start

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