1. Architecture Styles intermediate Multiple choice

    A browser-based design tool in Canva's mould lets users export a 40-page document to PDF, a 90-second animation to MP4 or a print-ready file. Export work takes anywhere from 3 seconds to 11 minutes, about 60000 a day, bursting around 09:00 in each region. All three run inside the synchronous web tier today and p99 export requests are killed by the load balancer at 60 seconds. Which architecture style should the export path use?

    3 min answer architecture-stylesasync-processingjob-queuemedia-rendering
  2. Architecture Styles intermediate Multiple choice

    A news organisation runs a normal publishing platform for most of the year and an entirely different traffic profile on election night. Which architecture style should the read path use, and how does that differ from the style appropriate to the newsroom's editing tools?

    2 min answer architecture-stylesread-pathcachingnew-york-times
  3. Artifact Management intermediate

    A platform distributes large artefacts to many consumers. What does artefact management need beyond storage?

    2 min answer artifactsimmutabilityretentionprovenance
  4. Artifact Management intermediate Multiple choice

    A team's registry holds every build artefact ever produced: 400,000 container images, 180 TB, growing 6 TB a month, and the storage bill is now material. Which retention policy should they adopt?

    3 min answer artifact-managementretentionrollbackaudit
  5. Audit Evidence intermediate

    An audit requires evidence that controls operated throughout the period. How should that evidence be produced?

    2 min answer chargebeeevidenceautomationsampling
  6. Audit Evidence intermediate

    Your organisation is preparing for its first SOC 2 audit. The security team is asking engineers for screenshots of configurations. What would you change, and what is the architectural argument?

    2 min answer complianceevidenceautomationcertification
  7. Availability Mathematics intermediate Multiple choice

    A service depends on four components, each independently 99.9% available, called in sequence on every request. What is the resulting availability, and what does this imply about architecture?

    2 min answer availabilitydependenciesredundancymath
  8. Availability Mathematics intermediate

    A stakeholder requires 99.99% availability. Your service depends on five internal services each offering 99.9%. What do you say?

    2 min answer availabilitydependenciesrequirements
  9. Partner & B2B Integration intermediate

    Partner integrations take four months from contract signature to production traffic. Engineering says the work is three days. Where does the time go and how do you cut it?

    2 min answer b2bonboardingdeveloper-experiencesandbox
  10. Backward Compatibility intermediate

    What happens if an enterprise software vendor adds a required field to a widely-integrated interface, believing it is a minor change?

    2 min answer backward-compatibilitybreaking-changeintegrationenterprise
  11. BFF for Experience intermediate Multiple choice

    Six product teams ship a web app and an iOS app against 23 domain services. A typical screen needs data from four to nine of them. Mobile releases take roughly three weeks to reach 90% of installs. Round-trip time on mobile networks is 60-150 ms. The platform team must pick one aggregation approach for the next two years. Which fits?

    2 min answer bffownershipapi-shapesversion-tail
  12. BFF for Experience intermediate

    Your mobile BFF now contains pricing logic, entitlement checks and order validation. What has gone wrong?

    2 min answer bffboundariesdrift