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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

93 questions in Delivery & Release Engineering.

  1. Deployment Strategies advanced

    A deployment reaches seven of eight servers. The eighth runs old code that a reused flag activates. Losses accumulate for 45 minutes. What are the findings?

    2 min answer knight-capitaldeploymentflagsverification
  2. Deployment Strategies advanced Multiple choice

    A food-delivery platform in the mould of Zomato rolls out a pricing change in nine steps over 90 minutes with a 10-minute bake between steps. Error rate, latency and saturation stay flat the whole time. The defect is a wrong rounding rule that under-charges some orders, and it surfaces the next morning when finance reconciliation runs. Which change makes this class of rollout safe?

    3 min answer zomatoprogressive-deliveryinvariantsbake-time
  3. Deployment Strategies advanced

    A platform must deploy a service holding millions of long-lived connections. Which deployment strategy applies, and what capability makes it work?

    1 min answer deploymentstatefuldrainingresumption
  4. Deployment Strategies advanced

    Your organisation releases every two weeks on a train. Teams complain about lead time. Is the train the problem?

    2 min answer releasecouplingflow
  5. Environment Strategy intermediate

    An organisation has development, integration, staging, pre-production and production environments, and bugs still reach production. What should change?

    2 min answer freshworksenvironmentsparitytesting-in-production
  6. Environment Strategy intermediate

    An organisation maintains many long-lived environments and they have all drifted from production. What environment strategy works?

    2 min answer environmentsdriftephemeralparity
  7. Environment Strategy intermediate

    Six teams share one integration test environment. Bookings are made a week ahead and releases slip when someone overruns. How do you fix it?

    1 min answer environmentsdeliverytestingqueues
  8. Environment Strategy intermediate

    Six teams share one staging environment. Booking it is a bottleneck and it is permanently broken by whoever deployed last. Design a way out.

    2 min answer environmentsplatformflow
  9. Environment Strategy intermediate

    You have one quarter to delete the shared staging environment that eight teams deploy into. Sequence the work so each step is reversible, say where the point of no return actually is, and name what cannot move.

    3 min answer environment-strategycontract-testingdecommissionsequencing
  10. Flow Metrics intermediate

    A platform team reports deployment frequency of 12 per day, lead time for changes of 40 minutes, change failure rate of 2% and recovery time of 18 minutes - elite on every band. Incidents have risen 40% over two quarters. Review the measurement.

    3 min answer doraflow-metricsmeasurementgoodhart
  11. Flow Metrics intermediate

    A team's lead time from commit to production is three days. Which component is usually the largest, and how is it found?

    2 min answer linearlead-timeflowreview-latency
  12. Flow Metrics intermediate

    An engineering director tells you that team A has a change failure rate of 2% and team B's is 18%, and asks you to find out what team A is doing right so the practice can be spread. Walk me through how you would answer.

    3 min answer flow-metricschange-failure-rategoodhartmeasurement