Browse quizzes

A practical Amazon Web Services fundamentals quiz covering AWS global infrastructure, accounts and governance, IAM, VPC networking, compute, storage, databases, serverless and messaging, containers, observability, security, reliability, cost management, and infrastructure automation. Designed for developers, platform engineers, DevOps practitioners, and learners building a durable foundation for real AWS workloads.

A practical Terraform quiz covering HCL, providers, resources, dependency graphs, modules, state, backends, lifecycle behavior, imports and refactoring, testing, automation, security, drift, and production troubleshooting. Designed for developers, platform engineers, DevOps engineers, and cloud practitioners using Terraform to manage infrastructure safely.

A practical Kubernetes quiz for developers, platform engineers, and DevOps engineers covering the API model, Pods, workload controllers, networking, storage, configuration, scheduling, resource management, security, availability, autoscaling, observability, troubleshooting, cluster operations, and extensibility. Focused on understanding behavior, making sound production choices, and diagnosing real failure scenarios.

A comprehensive Java assessment for experienced developers covering the language, type system, object model, generics, collections, functional programming, concurrency, the Java Memory Model, JVM internals, garbage collection, I/O, reflection, modules, modern Java features, performance, diagnostics, and common production pitfalls. Focused on Java, the JDK, and the JVM rather than Spring, Hibernate, Jakarta EE, or build tools.

A practical Docker quiz for developers and DevOps engineers covering images, containers, Dockerfiles, BuildKit, storage, networking, Docker Compose, security, resource management, debugging, and production failure scenarios.

A practical, scenario-based assessment of entrepreneurial skills for founders, freelancers, small-business owners, employees, and anyone who wants to turn ideas and opportunities into value. This quiz is based on EntreComp — the European Entrepreneurship Competence Framework developed by the European Commission's Joint Research Centre. EntreComp defines entrepreneurship broadly as acting upon opportunities and ideas and transforming them into financial, cultural, or social value for others. It organizes entrepreneurial competence into three interconnected areas — Ideas & Opportunities, Resources, and Into Action — comprising 15 competencies. This quiz adapts those competencies into realistic decisions, trade-offs, calculations, and business situations rather than testing memorization of framework terminology. Official framework: https://joint-research-centre.ec.europa.eu/entrecomp-entrepreneurship-competence-framework_en

A practical quiz for dog owners in Germany covering canine behavior, training, health, nutrition, everyday care, puppies, safety, emergencies, and responsible ownership. Most of the knowledge in this quiz applies to dog owners anywhere; only some questions focus specifically on German laws, regulations, and local practices.

A senior-level Kafka quiz for backend engineers, focused on application architecture, producers and consumers, partitioning and ordering, delivery guarantees, consumer groups and rebalancing, transactions and idempotency, schema evolution, retries and DLQs, observability, scaling, and production failure modes. Broker administration is included only where backend engineers need it.

A practical PostgreSQL quiz for backend developers, covering SQL semantics, indexes, transactions and MVCC, query planning, locking, JSONB, schema design, and production operations.

A friendly introduction to supply chain management for engineers and tech folks. No formal training required — just curiosity about how the world's goods actually move from A to B (and sometimes C, D, and back to A).

Vanished ships, unexplained phenomena, strange historical events, and mysteries that have never been solved. How much do you know about the world's greatest enigmas?

From the Eiffel Tower to Machu Picchu — test your knowledge of the world's most iconic cities, landmarks, and the stories behind them.