Quiz

2741 questions of the kind that actually get asked — in interviews, in architecture review boards, and by the person who has to run the thing at 3 AM. Every answer states the trade-off rather than the slogan, and says when the obvious choice is the wrong one.

All areas2741 Architecture Fundamentals81 Distributed Systems101 Data Architecture90 Cloud Architecture87 Networking86 API & Integration Architecture78 Reliability & Resilience99 Observability92 Performance & Capacity Engineering90 Security Architecture95 Cost Architecture & FinOps92 Business Architecture93 Architecture Communication91 Enterprise Architecture91 Legacy Modernization92 AI-Era Architecture96 Software Architecture & Engineering84 Architecture Patterns84 Architecture Decision-Making91 The Architect's Meta-Skills92 Delivery & Release Engineering93 Platform Engineering & Developer Experience92 Testing & Quality Architecture102 Data Platform Architecture98 Streaming & Real-Time Data93 Data Governance & Semantics91 Frontend & Experience Architecture91 Edge, Mobile & IoT88 Regulatory & Data Protection Architecture90 Assurance, Audit & Model Risk98

Difficulty Any beginner intermediate advanced

1018 questions.

Quiz

A team proposes storing the customer's address on every order row "so order history is accurate". Is that denormalisation or a modelling error?

A team wants to store a product's variable attributes as a JSON column rather than modelling them as tables. When is that right and what is given up?

A service runs across three availability zones at 70% CPU during peak. The team wants to survive losing one zone at peak with no user impact. Roughly what does that require, and what does the same arithmetic say about running across two zones?

An organisation adopts blameless postmortems but engineers still avoid admitting mistakes and incidents are under-reported. What is missing beyond the stated policy?

A team is launching a new service and asks what its SLO should be. How do you help them decide, and why is "99.99%" usually the wrong first answer?

The business asks for "100% uptime" for a new customer portal. Walk me through the conversation that ends in an agreed SLO.

A marketing site is a client-rendered single-page application. Organic traffic is poor and the team blames the search engine. What is your assessment?

A team must choose between static generation, incremental regeneration, server rendering and client rendering for different parts of a product. What decides each, and what is the common mistake?

A marketplace replatforms a service from a self-managed database to a managed one. What benefits are real, what constraints appear, and what must be verified first?

A marketplace seller edits a listing and is immediately shown the old version, because the read went to a replica. What are the options, and how should the choice be made?

An analytics platform's database is write-bound rather than read-bound. The team adds read replicas and nothing improves. Why, and what should be done instead?