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Quiz

2868 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 areas2868 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 Communication102 Enterprise Architecture100 Legacy Modernization92 AI-Era Architecture96 Software Architecture & Engineering93 Architecture Patterns94 Architecture Decision-Making101 The Architect's Meta-Skills102 Delivery & Release Engineering103 Platform Engineering & Developer Experience92 Testing & Quality Architecture102 Data Platform Architecture98 Streaming & Real-Time Data103 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. Platform Tenancy advanced

    An internal platform hosts workloads from many teams. What isolation model should it use, and how are noisy neighbours handled?

    2 min answer multi-tenancyisolationkubernetesquotas
  2. Platform Tenancy advanced

    An internal platform serves many product teams with very different scale and criticality. How should isolation between them be designed?

    2 min answer razorpayplatform-tenancyisolationquotas
  3. Platform Tenancy advanced

    On 11 December 2024 OpenAI deployed a new telemetry service into its Kubernetes clusters. Its configuration caused every node to perform Kubernetes API operations whose cost scaled with the size of the cluster; API servers saturated and DNS-based service discovery failed across most large clusters, with services unavailable from 15:16 to 19:38 PST. The change had been tested in staging. What structurally failed, what could staging not test, and where would copying their response be a mistake?

    3 min answer openaikubernetescontrol-planemulti-tenancy
  4. Platform Tenancy advanced

    On a shared cluster serving twelve teams, one team's new operator creates a custom resource per user session, reaching about 50,000 objects in a day. Other teams start seeing slow deploys and intermittent API timeouts. What is happening inside the cluster?

    3 min answer kubernetesetcdmulti-tenancynoisy neighbour
  5. Platform Tenancy advanced Multiple choice

    Twelve teams, forty services. One shared Kubernetes cluster or a cluster per team? Justify.

    1 min answer kubernetestenancyisolation
  6. Self-Service Provisioning intermediate

    A platform offers self-service provisioning and teams still file tickets. Why, and what would change it?

    2 min answer delhiveryself-serviceprovisioningfriction
  7. Self-Service Provisioning advanced

    A self-service database provisioning workflow takes 40 minutes and fails about 15% of the time. The platform team says the cloud provider's API is unreliable. Retrying the whole workflow usually works. What is actually going on, and what would you change?

    3 min answer provisioningidempotencyeventual consistencyorphaned resources
  8. Self-Service Provisioning intermediate

    Design the self-service interface for provisioning a database, so that developers do not file tickets and security does not object.

    2 min answer platformguardrailssecurity
  9. Self-Service Provisioning beginner Multiple choice

    Provisioning a database on this platform takes about 4 engineer-hours of real work. The median request takes 6 working days end to end. The platform team of 5 is fully occupied. Why is the lead time roughly twelve times the work time and which change reduces it most?

    3 min answer self-servicequeueinglead timeticket ops
  10. Self-Service Provisioning intermediate Multiple choice

    Which platform operations should be self-service, and which should require review?

    1 min answer self-serviceguardrailsreviewboundaries
  11. Self-Service Provisioning advanced

    Your platform team is now a ticket queue — every environment, every permission, every new service goes through them. How do you get out of it?

    1 min answer platformself-servicebottleneckautomation
  12. Service Mesh Operations advanced

    A platform runs a service mesh. What are the operational realities teams underestimate?

    2 min answer service-meshoperationscontrol-planeupgrades