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Practice Exam 1: Delta Lake, Unity Catalog, Compute, and Ingestion Patterns
DataForge Series: Databricks Data Engineer Associate - Part 14 of 16
50 scenario-based questions. Written the way the real exam is written — every wrong answer is architecturally plausible and fails at least one stated requirement. Every explanation tells you not just what the correct answer is but why each wrong answer fails.
Work through all 50 before checking answers. Time yourself — 90 minutes for 45 questions is the real exam pace. These 50 should take you about 100 minutes if you’re reading carefully.
Answer key and explanations start after Question 50.
Questions 1–50
Q1. A data engineer is building a pipeline that writes to a Delta table. A concurrent read job is running against the same table. The write job is midway through committing 20 Parquet files when the read job executes a query. What does the read job see?
A. A partial result containing the files committed so far
B. The table state before the write started — all 20 files are invisible until the commit completes
C. An error indicating a concurrent modification conflict
D. The table state after the write completes, regardless of when the read started
