This AZ-104 practice question tests your understanding of manage azure identities and governance. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. A key principle to apply: azure resource locks prevent accidental deletion or modification of resources.. 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 prevent accidental deletion of a resource group while still allowing administrators to create and modify resources inside it. Which lock should you apply?
ReadOnly
Why wrong: A ReadOnly lock would also prevent administrators from modifying resources.
CanNotDelete
A CanNotDelete lock blocks deletion but still permits updates.
Delete lock
Why wrong: Delete lock is not the Azure lock name used in the platform.
No lock and a budget alert
Why wrong: A budget alert does not prevent accidental deletion.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
CanNotDelete
The CanNotDelete lock prevents the resource group from being deleted while still allowing all operations (including create and modify) on resources within it. This is the correct choice because the requirement is specifically to block deletion, not to restrict modifications or read access.
Key principle: Azure resource locks prevent accidental deletion or modification of resources.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
ReadOnly
Why it's wrong here
A ReadOnly lock would also prevent administrators from modifying resources.
CanNotDelete
Why this is correct
A CanNotDelete lock blocks deletion but still permits updates.
Related concept
Azure resource locks prevent accidental deletion or modification of resources.
Delete lock
Why it's wrong here
Delete lock is not the Azure lock name used in the platform.
No lock and a budget alert
Why it's wrong here
A budget alert does not prevent accidental deletion.
Common exam traps
The trap here is that candidates confuse the non-existent 'Delete lock' with the actual CanNotDelete lock, or assume a ReadOnly lock is needed when only deletion prevention is required.
Detailed technical explanation
Azure resource locks are applied at the subscription, resource group, or resource level and override any role-based access control (RBAC) permissions. The CanNotDelete lock uses Azure Resource Manager's lock mechanism to block DELETE operations via the REST API (e.g., `DELETE /subscriptions/{subscriptionId}/resourcegroups/{resourceGroupName}?api-version=2021-04-01`), while allowing all other HTTP methods like PUT, PATCH, and GET. In a real-world scenario, this lock is critical for protecting production resource groups from accidental deletion during maintenance or automation scripts.
Key takeaway
Azure resource locks prevent accidental deletion or modification of resources.
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.
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FAQ
Manage Azure Identities and Governance — This question tests Manage Azure Identities and Governance — Azure resource locks prevent accidental deletion or modification of resources..
The correct answer is: CanNotDelete — The CanNotDelete lock prevents the resource group from being deleted while still allowing all operations (including create and modify) on resources within it. This is the correct choice because the requirement is specifically to block deletion, not to restrict modifications or read access.
Review azure resource locks prevent accidental deletion or modification of resources., then practise related AZ-104 questions on the same topic to reinforce the concept.
Azure resource locks prevent accidental deletion or modification of resources.
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Last reviewed: Jun 11, 2026
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