The answer is to enable double encryption with a customer-managed key in Azure Disk Encryption. This is correct because Azure Databricks managed disks, such as the Standard_LRS disk in your cluster, support customer-managed key encryption at the infrastructure level through Azure Disk Encryption, which uses Azure Key Vault to control the keys. Double encryption adds a second layer of protection by encrypting both the OS and data disks with a platform-managed key and then again with your customer-managed key. On the DP-203 exam, this scenario tests your understanding of how Azure Databricks integrates with Azure Disk Encryption for data at rest, often appearing as a trap where you might confuse it with Azure Storage Service Encryption, which applies only to storage accounts, not managed disks. A common memory tip is to remember that "disks need Disk Encryption"—if the question mentions managed disks, always look for Azure Disk Encryption, not SSE or TDE.
DP-203 Practice Question: Secure, monitor, and optimize data storage and data processing
This DP-203 practice question tests your understanding of secure, monitor, and optimize data storage and data processing. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
You have an Azure Databricks workspace with a cluster that uses a Standard_LRS managed disk. You need to ensure that data at rest is encrypted using a customer-managed key (CMK). What should you configure?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable double encryption with a customer-managed key in Azure Disk Encryption
Option A is correct because Azure Databricks supports CMK encryption via Azure Disk Encryption or by using a key vault key for the managed disk. Option B (Azure Storage Service Encryption) is for storage accounts, not managed disks. Option C (Azure SQL Database TDE) is irrelevant. Option D (Azure Purview) is for data governance, not encryption.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Configure Azure Storage Service Encryption with a customer-managed key
Why it's wrong here
SSE is for Azure Blob/Data Lake storage, not managed disks.
✓
Enable double encryption with a customer-managed key in Azure Disk Encryption
Why this is correct
Azure Databricks clusters can use Azure Disk Encryption with CMK.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable Transparent Data Encryption (TDE) in Azure SQL Database
Why it's wrong here
TDE is for SQL databases, not Databricks.
✗
Use Azure Purview to classify and encrypt data
Why it's wrong here
Purview does not provide encryption.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this DP-203 question in full detail.
Identify which DP-203 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Secure, monitor, and optimize data storage and data processing — This question tests Secure, monitor, and optimize data storage and data processing — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable double encryption with a customer-managed key in Azure Disk Encryption — Option A is correct because Azure Databricks supports CMK encryption via Azure Disk Encryption or by using a key vault key for the managed disk. Option B (Azure Storage Service Encryption) is for storage accounts, not managed disks. Option C (Azure SQL Database TDE) is irrelevant. Option D (Azure Purview) is for data governance, not encryption.
What should I do if I get this DP-203 question wrong?
Identify which DP-203 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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