LFC Medallion Architecture Layers 3

Question 1

A pipeline ingests CDC (Change Data Capture) events from an OLTP database. Where should these raw CDC records land first?

Accepted Answer

Bronze layer without transformation

Answer

CDC events are raw source data and should be written to the Bronze layer exactly as received before any processing.

Question 2

Which scenario would most likely cause data to be routed to a 'quarantine' table rather than Silver?

Accepted Answer

Records that fail Silver-layer data quality checks

Answer

Records failing quality checks (invalid formats, business rule violations) are quarantined so clean data flows through while bad data is investigated.

Question 3

Why might a Gold layer table in Medallion Architecture be pre-aggregated rather than computed at query time?

Accepted Answer

To reduce query latency and compute cost for frequent BI workloads

Answer

Pre-aggregating in Gold shifts heavy compute to the pipeline, so dashboards and reports execute quickly without re-scanning large datasets.

Question 4

Which statement about schema enforcement is TRUE for the Bronze layer in a typical Medallion implementation?

Accepted Answer

Bronze uses schema-on-read, accepting data in its original form

Answer

Bronze typically uses schema-on-read or flexible schema to absorb diverse source formats without transformation.

Question 5

A data engineer needs to join customer data from two Silver tables and expose the result for a Tableau dashboard. What should they create?

Accepted Answer

A Gold layer table with the joined and aggregated business view

Answer

Joined, business-ready outputs for BI consumption belong in the Gold layer of the Medallion Architecture.

(LFC) Lakehouse Fundamentals Certification Practice Test

(LFC) Lakehouse Fundamentals Certification Practice Test

LFC Medallion Architecture Layers 3