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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

993 questions.

  1. Writing Decision Records intermediate Multiple choice

    Which section is missing from most architecture decision records, and why does it matter?

    2 min answer adrrevisit-conditionsdecisionsevolution
  2. Decommissioning intermediate

    A migration is complete and the old system is still running a year later. Why does decommissioning fail, and what makes it happen?

    2 min answer nykaadecommissioningcostrisk
  3. Decommissioning intermediate

    A replaced system is still running two years after its replacement went live. Why does decommissioning fail, and what makes it happen?

    2 min answer decommissioningunknown-consumersevidenceownership
  4. Delivery & Release Engineering intermediate

    A platform's pipeline is reliable but slow, and developers batch changes to avoid it. What is the real cost, and what should be measured?

    2 min answer pipelinefeedbackbatchingmetrics
  5. Delivery & Release Engineering intermediate Multiple choice

    Your pipeline takes 45 minutes and fails randomly twice a week. Which do you fix first and why?

    2 min answer pipelineflakinesstrustfeedback
  6. Delivery vs Maintainability intermediate

    A quick-commerce grocery operator running dark stores needs substitution handling for out-of-stock items. Option A is a rule table inside the existing order service: three weeks and it will need rework. Option B is a separate availability-and-substitution service with its own store: eleven weeks. The business does 45000 orders a day, cancels about 6% of them for stock reasons, expects the feature to recover roughly a third of those, and earns about 1.10 dollars of contribution per order. Roughly what is the cost of delay, and what rework budget does it justify?

    3 min answer cost-of-delaytechnical-debtsubstitutionsestimation
  7. Delivery vs Maintainability intermediate

    A team must ship a major capability quickly and the design that ships fastest is not the one that is easiest to maintain. How should the trade-off be made?

    1 min answer deliverymaintainabilityreversibilitydebt
  8. Deployment Diagrams intermediate Multiple choice

    An auditor asks what happens to your service if a single availability zone fails. Which diagram answers the question directly?

    3 min answer deploymentavailability zonesquorumresilience
  9. Deployment Diagrams intermediate

    What does a deployment diagram communicate that a container diagram cannot, and what is most often missing from it?

    2 min answer deployment-diagramtopologyfailure-domainscloudflare
  10. Deployment Diagrams intermediate Multiple choice

    What does a deployment diagram show that a container diagram cannot?

    2 min answer deploymentfailure-domainsredundancyblast-radius
  11. Deployment Diagrams intermediate

    Your deployment diagram shows three availability zones with every service replicated into each and a mesh spreading calls evenly across zones. Finance asks why network charges are $14k of a $90k monthly cloud bill. Estimate the cross-zone traffic implied by that number and say what you would annotate on the diagram.

    3 min answer deployment-diagramcross-zonecostannotation
  12. Deployment Gates intermediate

    A pipeline has accumulated a dozen approval gates and lead time has doubled. Which gates are worth keeping?

    2 min answer browserstackgateslead-timeautomation