Portfolio ↗

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. InnerSource intermediate

    An organisation wants shared internal libraries and services to be improvable by any team. What conditions make innersource work, and when does it fail?

    2 min answer innersourceownershipcontributionplatform
  2. InnerSource intermediate

    An organisation wants shared internal libraries maintained collaboratively across teams. What must be true for innersource to work, and when does it fail?

    2 min answer gustoinnersourceownershipcontribution
  3. InnerSource intermediate

    Team A is blocked for three weeks waiting on a small change from Team B. What are the options and what does each cost?

    2 min answer innersourcedependenciesbottleneckownership
  4. Integration Test Boundaries intermediate

    A grocery-delivery platform of the kind Instacart operates has 1,200 integration tests, all green, and an integration with the inventory service that has broken twice this quarter. The tests mock the inventory client. A developer proposes mocking less. Is that the fix?

    3 min answer integration testingmockstest boundariescontract testing
  5. Integration Test Boundaries intermediate

    A team replaces every in-process fake with the real dependency in a container, and defect escape rate falls. What have they bought and when does the bill arrive?

    2 min answer testcontainersintegration-testsci-costisolation
  6. Integration Test Boundaries intermediate

    For a service with a database, a message broker and two downstream HTTP dependencies, where do you draw the integration test boundary?

    2 min answer testingscopedesign
  7. Integration Test Boundaries intermediate

    Where should the boundary of an integration test sit, and what is the common mistake?

    2 min answer integration-testsboundariesstubsdeterminism
  8. Internal Developer Platform intermediate

    Review this. A 12-engineer startup with 6 services has built an internal developer platform - a React portal, a YAML DSL that generates Terraform, a bespoke secrets service backed by cloud KMS, a service catalogue and a maturity scorecard with 23 checks. Two of the twelve engineers work on it full time. Deploys take 14 minutes and the DSL covers about 60% of what teams need, with the rest hand-written Terraform merged by those two engineers. What would you remove, what would you change, and what would you leave alone?

    3 min answer internal developer platformpragmatismabstractionbuild-vs-buy
  9. Internal Developer Platform intermediate

    Your service catalogue says every service has an owner. Investigating an incident, you find the named owner left the company eight months ago. How do you prevent this class of problem?

    2 min answer catalogueownershipmetadata
  10. Internationalisation intermediate

    09:10 a release adds Portuguese for Angola. 09:40 support in Luanda reports prices shown in Brazilian reais with Brazilian tax wording. 10:05 one page shows English legal copy inside an otherwise Portuguese flow. No pricing or tax code changed in the release and every response is HTTP 200. What failed and which design decision allowed it?

    2 min answer i18nlocale-negotiationfallbackpricing
  11. Internationalisation intermediate

    A learning platform must support many languages including ones with different scripts and text directions. What must be architectural rather than cosmetic?

    2 min answer unacademysharechati18nrtl
  12. Internationalisation intermediate

    A release goes out and checkout fails for users in one market only - Turkey. The code path is identical for everyone and no market-specific logic was changed. The error is a failed comparison against a string constant. What happened?

    3 min answer internationalisationlocaleunicodedefects