Quick Answer
OneLake is the correct choice because it serves as the single, unified, lake-centric data foundation in Microsoft Fabric, automatically provisioned for every tenant to provide a multi-cloud, SaaS-based data lake. This eliminates data duplication by enabling collaborative and governed access to data stored in open formats like Delta Parquet, making it the core component for building a unified analytics platform. On the Microsoft Azure Data Fundamentals DP-900 exam, this concept tests your understanding of how Fabric’s architecture centralizes data management—a common trap is confusing OneLake with Azure Data Lake Storage, but remember that OneLake is the logical abstraction layer that sits on top of physical storage. A simple memory tip: think of OneLake as the “one lake” that unifies all your data, just as the name implies, so when you see a question about a lake-centric foundation in Fabric, always anchor on OneLake.
This DP-900 practice question tests your understanding of describe an analytics workload on azure. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Your company wants to use Microsoft Fabric to create a unified analytics platform. Which component in Microsoft Fabric provides a lake-centric, collaborative, and governed data foundation?
Power BI
Why wrong: Power BI is for business intelligence.
Data Factory
Why wrong: Data Factory is for orchestration and ETL.
OneLake
OneLake is the lake-centric data foundation in Fabric.
Synapse Data Engineering
Why wrong: This is a workload that uses OneLake.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
OneLake
OneLake is the correct answer because it is the single, unified, lake-centric data foundation in Microsoft Fabric. It provides a multi-cloud, SaaS-based data lake that is automatically provisioned for every Fabric tenant, enabling collaborative and governed access to data without data duplication, while supporting open formats like Delta Parquet.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Power BI
Why it's wrong here
Power BI is for business intelligence.
Data Factory
Why it's wrong here
Data Factory is for orchestration and ETL.
OneLake
Why this is correct
OneLake is the lake-centric data foundation in Fabric.
Related concept
Read the scenario before looking for a memorised answer.
Synapse Data Engineering
Why it's wrong here
This is a workload that uses OneLake.
Common exam traps
The trap here is that candidates confuse the tool that provides the data foundation (OneLake) with the workloads that operate on top of it (like Synapse Data Engineering or Data Factory), or mistake Power BI's role as a visualization layer for the underlying storage and governance layer.
Detailed technical explanation
OneLake is built on top of Azure Data Lake Storage (ADLS) Gen2 and uses a single-tenant, multi-instance architecture where each Fabric tenant gets a root OneLake container. It enforces governance through a unified security model (including row-level security and data masking) and supports shortcuts to reference external data sources without copying data, making it a true 'single copy of data' for the entire organization.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
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FAQ
Describe an analytics workload on Azure — This question tests Describe an analytics workload on Azure — Read the scenario before looking for a memorised answer..
The correct answer is: OneLake — OneLake is the correct answer because it is the single, unified, lake-centric data foundation in Microsoft Fabric. It provides a multi-cloud, SaaS-based data lake that is automatically provisioned for every Fabric tenant, enabling collaborative and governed access to data without data duplication, while supporting open formats like Delta Parquet.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This DP-900 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DP-900 exam.
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