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Quiz

2707 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 areas2707 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 Architecture96 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 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

44 questions in Delivery & Release Engineering.

  1. Continuous Integration Discipline intermediate

    Your CI retries a failed test up to three times before reporting a stage red. Trunk has been green for eleven straight weeks. Twice this quarter a bug reached production that an existing test had in fact failed on, and p50 pipeline duration is unchanged. Where do you look, and what is the diagnosis?

    3 min answer flaky-testsretriesquarantinesignal-loss
  2. Database Migration Under CD intermediate

    A release must rename a heavily used database column and ships tonight. The team proposes doing the rename in the deployment. What is wrong, and what do you propose?

    2 min answer migrationrollbackschemacontinuous-delivery
  3. Database Migration Under CD intermediate Multiple choice

    A superapp in the mould of Grab renames a column using expand and contract. The rolling deploy of the 240-pod service takes 11 minutes. A batch consumer reads a cached schema descriptor with a 1-hour TTL. A worker fleet is draining a 6-hour backlog of jobs serialised against the old shape. Mobile clients hold the old field name until users update. Roughly how long must both shapes stay correct before the contract step is safe?

    3 min answer grabexpand-and-contractschema-migrationmobile-clients
  4. Database Migration Under CD intermediate

    A team deploys several times a day and needs to change a database schema. What sequence prevents downtime, and which step is skipped?

    2 min answer chargebeemigrationexpand-contractbackfill
  5. Delivery & Release Engineering intermediate

    A platform's pipeline is reliable but slow, and developers batch changes to avoid it. What is the real cost, and what should be measured?

    2 min answer pipelinefeedbackbatchingmetrics
  6. Delivery & Release Engineering intermediate Multiple choice

    Your pipeline takes 45 minutes and fails randomly twice a week. Which do you fix first and why?

    2 min answer pipelineflakinesstrustfeedback
  7. Deployment Gates intermediate

    A pipeline has accumulated a dozen approval gates and lead time has doubled. Which gates are worth keeping?

    2 min answer browserstackgateslead-timeautomation
  8. Deployment Gates intermediate

    An enterprise's deployment gates have accumulated until releases take weeks. Which gates should remain automated, which manual, and which removed?

    2 min answer gatesautomationapprovalsrisk
  9. Deployment Gates intermediate

    During an outage, an engineer wants to bypass the pipeline and patch production directly. It would save 25 minutes. What is your position?

    2 min answer incidentgovernancecontrols
  10. 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
  11. 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
  12. 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