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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. Correlation IDs intermediate

    An API platform's requests trigger asynchronous work, webhook deliveries and retries, sometimes hours later. How should correlation identifiers be designed so a customer question can be answered end to end?

    2 min answer correlation-idscausalityasyncsupport
  2. Cost Allocation intermediate

    Forty percent of your cloud spend is untagged. What do you do?

    2 min answer taggingallocationgovernanceenforcement
  3. Cost & FinOps intermediate

    A platform's cloud spend grows faster than traffic for six quarters, with no single team responsible. Why do cost-reduction sprints fail to hold, and what is the reframing that works?

    2 min answer finopsunit-economicsattributiongovernance
  4. Cost & FinOps intermediate

    Finance wants to cut cloud spend by committing to one-year and three-year reservations. What do you commit to, and what could go wrong?

    2 min answer finopscommitmentsreservationscost
  5. Cost & FinOps intermediate

    The cloud bill has tripled in six months while traffic grew 40%. How do you find out why, and what do you expect to find?

    2 min answer finopscostdiagnosisegress
  6. Cost Governance intermediate

    A team adopts an elastic analytical platform and receives a surprising invoice. What controls should have existed, and why do they get added late?

    2 min answer snowflakeelasticitygovernancequotas
  7. Cost Governance intermediate

    The cloud bill has doubled year on year while revenue grew 20%. The CFO wants a plan. What is your approach?

    1 min answer finopscostgovernancecloud
  8. Architecture Cost Modelling intermediate

    An architecture review must estimate the cost of a proposed design before it is built. What should the model contain, and what makes such estimates useless?

    2 min answer cost-modellingarchitecture-reviewestimationdrivers
  9. Architecture Cost Modelling intermediate

    The cloud bill doubled over three months with no traffic growth. Where do you look?

    2 min answer finopsdiagnosiscost
  10. Cost per Request intermediate

    A communications platform of the kind Twilio operates bills its customers per message. Most of what it pays per message goes to carriers rather than to its own servers. The team commits to halving infrastructure cost per message this year. What does that buy, and what does it give up?

    3 min answer unit economicscost of goods soldroutingmargin
  11. Cost per Request intermediate Multiple choice

    A marketplace's infrastructure spend rises with growth. How should it distinguish healthy growth from deteriorating efficiency?

    2 min answer meeshounit-economicscostefficiency
  12. Cost per Request intermediate Multiple choice

    Your infrastructure bill rose 40% this quarter. What do you need to know before deciding whether that is a problem?

    2 min answer unit-economicscostefficiencymetrics