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Quiz

2827 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 areas2827 Architecture Fundamentals91 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-Making101 The Architect's Meta-Skills92 Delivery & Release Engineering103 Platform Engineering & Developer Experience92 Testing & Quality Architecture102 Data Platform Architecture98 Streaming & Real-Time Data93 Data Governance & Semantics91 Frontend & Experience Architecture101 Edge, Mobile & IoT98 Regulatory & Data Protection Architecture99 Assurance, Audit & Model Risk98
Difficulty Any beginner intermediate advanced

92 questions in Platform Engineering.

  1. Container Image Strategy beginner Multiple choice

    An inference service's container image is 6.2 GB because the model weights sit in the final layer. Autoscaling adds twelve fresh nodes at peak; the new pods stay NotReady for several minutes and other pods scheduled onto the same nodes wait behind them. What is happening and which change helps most?

    3 min answer container imagesimage pullcold startautoscaling
  2. Container Image Strategy intermediate Multiple choice

    At 11:40 a node group scales from 40 to 120 nodes during a traffic spike. The new pods sit in ImagePullBackOff - the public registry is returning 429 for the unauthenticated pulls of base images that three of your images reference directly. Which change removes this failure mode?

    3 min answer container imagesregistryscale-outavailability
  3. Developer Environments intermediate

    A payments change passes its per-PR ephemeral environment and staging. Twenty minutes after the production deploy checkout p99 goes from 300 ms to 9 s and the database shows lock waits on one table. The ephemeral environment ran the same image and the same migration. What failed and which decision made the failure possible?

    3 min answer ephemeral environmentsparitylock contentiontest data
  4. Developer Environments intermediate

    A platform team proposes moving the inner loop into cloud development environments, so engineers edit locally and everything builds and runs remotely. What is gained, what is paid, and when does the bill arrive?

    2 min answer developer experiencecloud environmentscostlatency
  5. Developer Environments intermediate

    Developers spend significant time getting their local environment working and it frequently breaks. What should the platform provide?

    2 min answer developer-experienceenvironmentsinner-loopreproducibility
  6. Developer Environments intermediate

    Ephemeral preview environments were a success. The cloud bill has tripled. What went wrong?

    2 min answer finopsenvironmentsplatform
  7. Guardrails vs Gates intermediate

    A platform has a policy check that warns when a service lacks resource limits, readiness probes or an owner label. 140 of 200 services fail at least one check. The security team asks for it to become blocking next week. What happens if you do, and what would you do instead?

    2 min answer policyenforcementmigrationexemptions
  8. Guardrails vs Gates intermediate

    A platform team must ensure services meet security and observability requirements. Should that be a gate or a guardrail?

    2 min answer hasuraguardrailsgatesdefaults
  9. Guardrails vs Gates advanced

    An interviewer gives you this - "Every service has to propagate W3C trace context. You have 200 services across 6 languages and no authority to mandate anything. Get me to full coverage, and tell me how you would know you got there." Walk through it.

    3 min answer guardrailstracingadoptiondefaults
  10. Guardrails vs Gates advanced

    When should a platform prevent an action automatically, and when should it require a human decision?

    2 min answer guardrailsgatespreventionscale
  11. Guardrails vs Gates intermediate

    Your architecture review board is a three-week queue. Half the submissions are checking things like region, encryption and tagging. Redesign the process.

    2 min answer governanceautomationreview
  12. Inner Loop & Outer Loop intermediate

    Developers cannot run the system locally — one service needs twelve dependencies. The inner loop is now "push and wait eight minutes". How do you fix it?

    2 min answer developer-experiencetestingarchitecture