Quiz

2667 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 areas2667 Architecture Fundamentals81 Distributed Systems101 Data Architecture90 Cloud Architecture87 Networking86 API & Integration Architecture78 Reliability & Resilience88 Observability81 Performance & Capacity Engineering90 Security Architecture95 Cost Architecture & FinOps92 Business Architecture93 Architecture Communication91 Enterprise Architecture91 Legacy Modernization92 AI-Era Architecture86 Software Architecture & Engineering84 Architecture Patterns84 Architecture Decision-Making91 The Architect's Meta-Skills92 Delivery & Release Engineering93 Platform Engineering & Developer Experience92 Testing & Quality Architecture90 Data Platform Architecture88 Streaming & Real-Time Data93 Data Governance & Semantics81 Frontend & Experience Architecture91 Edge, Mobile & IoT88 Regulatory & Data Protection Architecture90 Assurance, Audit & Model Risk88

Difficulty Any beginner intermediate advanced

4 questions in Capacity Planning.

Quiz

A grocery delivery platform experiences a sudden multi-week increase in demand well beyond any forecast. Which capacity constraints bind first, and which cannot be solved with autoscaling?

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?

How should a platform with extreme scheduled peaks decide how much capacity headroom to hold, and what evidence should drive it?

Your platform runs across three availability zones. How would you determine whether it actually survives losing one?