The correct answer is to apply a 'CanNotDelete' resource lock on the disk resource. This configuration prevents unauthorized snapshot creation because Azure Resource Locks operate at the management plane, blocking any operations that would modify or delete the resource, and creating a snapshot is technically a modification of the disk’s state. On the Microsoft Azure Security Engineer Associate AZ-500 exam, this concept tests your understanding of how resource locks differ from RBAC or Azure Policy—RBAC can still allow snapshot creation if a user has the correct permissions, and Azure Policy only audits or enforces compliance without blocking actions. A common trap is confusing backup policies with locks; Azure Backup does not prevent manual snapshots. Remember the mnemonic “Lock to Block”—if you need to stop any modification, including snapshots, a CanNotDelete lock is your go-to control.
AZ-500 Secure compute, storage, and databases Practice Question
This AZ-500 practice question tests your understanding of secure compute, storage, and databases. 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 need to protect Azure VM disks from unauthorized snapshot creation. Which configuration should you implement?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Apply a 'CanNotDelete' resource lock on the disk resource.
Azure Resource Locks prevent deletion or modification of resources, including snapshot creation. Option B is wrong because Azure Backup does not prevent snapshots. Option C is wrong because RBAC can allow snapshot creation if permissions are granted. Option D is wrong because Azure Policy can audit but not prevent.
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.
✗
Assign the 'Reader' role to all users on the disk.
Why it's wrong here
Reader role cannot create snapshots, but contributors could.
✓
Apply a 'CanNotDelete' resource lock on the disk resource.
Why this is correct
Resource locks prevent deletion and modification, including snapshot creation.
Related concept
Read the scenario before looking for a memorised answer.
✗
Configure Azure Backup for the VM.
Why it's wrong here
Backup creates snapshots, it doesn't prevent them.
✗
Use Azure Policy to audit snapshot creation.
Why it's wrong here
Auditing does not prevent creation.
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 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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-500 question in full detail.
Identify which AZ-500 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 compute, storage, and databases — This question tests Secure compute, storage, and databases — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Apply a 'CanNotDelete' resource lock on the disk resource. — Azure Resource Locks prevent deletion or modification of resources, including snapshot creation. Option B is wrong because Azure Backup does not prevent snapshots. Option C is wrong because RBAC can allow snapshot creation if permissions are granted. Option D is wrong because Azure Policy can audit but not prevent.
What should I do if I get this AZ-500 question wrong?
Identify which AZ-500 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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