1. Data Governance & Semantics advanced Multiple choice

    A multi-tenant business application holds customer data for tens of thousands of organisations, each with its own compliance obligations. Which governance model actually works at that scale?

    1 min answer governancemulti-tenancypolicy-as-codedelegation
  2. Data Governance & Semantics advanced

    An interviewer says - our data governance programme is eighteen months old. We have a catalogue, a glossary, twelve part-time stewards and a monthly council. The CFO asked last week whether it is working and I could not answer. What would you measure, and what would you tell leadership if the numbers are bad?

    3 min answer governancemeasurementstewardshipenforcement
  3. Data Governance & Semantics advanced

    You inherit an enterprise data estate with no governance at all and a two-year mandate. What do you do first?

    1 min answer governancesequencingprioritisationpragmatism
  4. Data Mesh advanced

    A CDO proposes moving to a data mesh because the central data team is a bottleneck with a nine-month backlog. How do you assess the proposal?

    2 min answer data-meshgovernanceoperating-modelplatform
  5. Data Mesh advanced

    A large enterprise wants to move from a central data team to a decentralised model. What determines whether that succeeds, and what does it not fix?

    1 min answer data-meshdecentralisationplatformownership
  6. Data Mesh advanced

    An interviewer says "we are going federated across about 40 domains. Which governance policies do we put in the platform as code and which stay as written guidance? Talk me through how you decide, and what the code version costs us."

    3 min answer data meshfederated governancepolicy as codeexceptions
  7. Data Mesh advanced

    An organisation is considering data mesh. What problem does it actually solve, what does it require, and when is a central platform team the better answer?

    2 min answer data-meshownershipdomainsplatform
  8. Data Mesh advanced

    What must exist before decentralising data ownership makes things better rather than worse?

    2 min answer data-meshplatformownershipincentives
  9. Data Observability intermediate

    A dashboard has shown the same numbers for eleven days. The pipeline reports success every night. What monitoring was missing?

    2 min answer monitoringqualityfreshness
  10. Data Observability intermediate

    A dashboard was wrong for three weeks before anyone noticed. What monitoring would have caught it?

    2 min answer nykaadata-observabilityfreshnessanomaly
  11. Data Observability advanced

    A data platform has thousands of datasets and cannot write manual quality tests for all of them. What should the observability approach be?

    1 min answer data-observabilityanomaly-detectionalertinglineage
  12. Data Observability intermediate Multiple choice

    A grocery marketplace of the kind Instacart operates ingests retailer inventory feeds hourly and deduplicates on store id plus SKU. A retailer changes its SKU format and about 3% of distinct products now collide, so rows silently merge. Ingested row counts fall 3%, inside the 20% anomaly band. Schema tests pass and availability on the storefront quietly degrades. Which single check catches this?

    3 min answer instacartdata-observabilityreconciliationsilent-failure