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Quiz

2777 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 areas2777 Architecture Fundamentals81 Distributed Systems101 Data Architecture90 Cloud Architecture87 Networking86 API & Integration Architecture87 Reliability & Resilience99 Observability92 Performance & Capacity Engineering90 Security Architecture95 Cost Architecture & FinOps92 Business Architecture93 Architecture Communication91 Enterprise Architecture100 Legacy Modernization92 AI-Era Architecture96 Software Architecture & Engineering93 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 Architecture99 Assurance, Audit & Model Risk98
Difficulty Any beginner intermediate advanced

1029 questions.

  1. The Six Rs intermediate Multiple choice

    Of the six migration strategies, which is most often skipped and why does that matter?

    1 min answer six-rsretireportfoliorationalisation
  2. SLI, SLO & SLA intermediate Multiple choice

    A brokerage sets a single availability target of 99.9% for its whole platform. Why is that wrong, and what should replace it?

    2 min answer zerodhaslojourneysavailability
  3. SLO Monitoring intermediate Multiple choice

    A checkout API has a 99.9% availability SLO and the team must decide where the indicator is computed from. The candidates are load-balancer access logs, in-process server metrics, the mobile client's own reporting, and synthetic probes. Which should be the primary source?

    3 min answer sloslimeasurementavailability
  4. SLO Monitoring intermediate Multiple choice

    A food-delivery platform in Zomato's mould pushes order-status events to restaurant tablets and to customers through a queue-backed webhook fleet. The complaints are that status arrives late rather than that it never arrives. Which indicator should the SLO be written on?

    3 min answer slofreshnessasynchronouswebhooks
  5. Slowly Changing Dimensions intermediate

    A "customers by segment" dashboard tile reports 104,300 where the customer table holds 100,000 rows. Revenue on the same dashboard is also about 4% high. The join looks correct, the pipeline is green, and re-running changes nothing. What is happening?

    3 min answer scd2joinsfan-outdbt tests
  6. Slowly Changing Dimensions intermediate

    A customer's attribute changes. Which slowly-changing-dimension approach should be used, and what decides it?

    2 min answer scdhistorypoint-in-timereporting
  7. Slowly Changing Dimensions intermediate

    A retail platform's product attributes change over time, and historical reports must reflect the values as they were. What modelling approach handles this?

    2 min answer nykaascdhistorydimensional
  8. Slowly Changing Dimensions intermediate Multiple choice

    The business asks why the regional sales report changed for a period that closed six months ago. What happened, and what is the fix?

    2 min answer dimensional-modellinghistorycorrectness
  9. Soak Testing intermediate

    A platform passes every load test yet degrades after several days of continuous operation. What class of problem is this, and what testing finds it?

    2 min answer soak-testingmemory-leaksresource-exhaustionendurance
  10. Soak Testing intermediate

    A service is restarted nightly by a cron job and nobody remembers why. What do you suspect and how do you confirm it?

    2 min answer soak-testingmemory-leakresource-leaktrends
  11. Soak Testing intermediate

    A service performs well in load tests and degrades after several days in production. What class of problem is this, and how is it found before release?

    2 min answer credsoak-testingleaksfragmentation
  12. Soak Testing intermediate

    A team proposes replacing its weekly 48-hour soak with a 30-minute soak in every pipeline run. Review the proposal. What would you keep, what would you change, and what can a 30-minute run never find?

    3 min answer soak-testingdriftregression-gatememory