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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.

  1. Explaining Trade-offs intermediate

    An executive asks why the new system "feels slower" when your dashboards show average response time improved. How do you explain it?

    1 min answer communicationperformancepercentiles
  2. Explaining Trade-offs intermediate

    You must explain the same decision — moving from a monolith to services for one domain — to a CFO, an engineering manager and an engineer. What changes?

    2 min answer communicationinfluenceaudiences
  3. Facilitation intermediate

    A cross-team design session for a shared capability produces no decision after ninety minutes. What went wrong in the facilitation?

    2 min answer browserstackfacilitationdesign-sessiondecision
  4. Facilitation intermediate

    A design session with twelve participants produces no decisions and everyone leaves frustrated. What should the facilitator have done differently?

    2 min answer facilitationdecision-makingmeetingsstructure
  5. Failure Thinking intermediate

    A major platform launch is three months away. How would you run a pre-mortem, and why bother?

    2 min answer riskfacilitationmeta-skills
  6. Fault Isolation intermediate

    A design platform's synchronous editing experience and its asynchronous export rendering share a compute cluster. Exports occasionally saturate it and the editor becomes unusable. What would you change?

    2 min answer fault-isolationbulkheadsworkload-separationcanva
  7. Fault Isolation intermediate Multiple choice

    Fastly's June 2021 incident saw a valid customer configuration trigger a latent bug from a May deployment, returning errors across most of its network for under an hour. You run a multi-tenant API where one tenant's input can reach a latent defect in shared code. Which isolation approach limits the damage?

    4 min answer fastlycellsshuffle shardingblast radius
  8. Feature Flags intermediate

    A codebase has accumulated hundreds of feature flags, many years old. What went wrong, and what discipline prevents it?

    2 min answer sentryfeature-flagslifecyclecomplexity
  9. Feature Flags intermediate

    A platform has accumulated hundreds of feature flags and nobody knows which are safe to remove. What went wrong, and what practice prevents it?

    2 min answer feature-flagsdebtlifecyclecomplexity
  10. Feature Flags intermediate

    A team adopts feature flags enthusiastically and two years later the codebase is full of them. What went wrong, and how should flags be managed as a lifecycle?

    3 min answer feature-flagstechnical-debttestinglifecycle
  11. Feature Flags intermediate

    Your feature flag service becomes unavailable. What happens to the fleet, and what should happen?

    2 min answer flagscontrol-planefallbackavailability
  12. File Formats & Compaction intermediate

    A lakehouse team raises its compaction target file size from 128 MB to 1 GB and switches the write codec from Snappy to Zstandard. Query cost falls. What did they give up, and when does that bill arrive?

    2 min answer datadogcompactionparquetzstd