LFC Medallion Architecture Layers 2

Question 1

Which Medallion layer is BEST suited for data scientists who need to explore raw, unmodified source data?

Accepted Answer

Bronze layer

Answer

The Bronze layer stores raw, unmodified data as ingested from source systems, making it ideal for exploration of original records.

Question 2

In a Medallion Architecture, what is the primary transformation applied when moving data from Bronze to Silver?

Accepted Answer

Deduplicating, cleansing, and conforming data

Answer

The Bronze-to-Silver step focuses on deduplication, null handling, type casting, and conforming schemas to produce trusted, clean records.

Question 3

A retail company wants a table of daily revenue by store for executive dashboards. Which Medallion layer should this table reside in?

Accepted Answer

Gold

Answer

Gold layer tables are business-level aggregations optimized for consumption by BI tools and executive reporting.

Question 4

What does 'multi-hop' mean in the context of Medallion Architecture?

Accepted Answer

Processing data through sequential refinement layers (Bronze→Silver→Gold)

Answer

Multi-hop refers to data moving through successive transformation stages, each adding quality and business context.

Question 5

Which of the following best describes a key advantage of keeping the Bronze layer immutable?

Accepted Answer

It enables full reprocessing and auditing from the original source data

Answer

An immutable Bronze layer acts as a system-of-record replay log, allowing pipelines to be rerun or corrected without re-ingesting from the source.

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