Question 6 of 1,031

Describe Azure management and governance →mediumMultiple ChoiceObjective-mapped

AZ-900 Describe Azure management and governance Practice Question

This AZ-900 practice question tests your understanding of describe azure management and governance. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.

A company has a critical resource group named 'Prod-Databases' that contains Azure SQL databases and virtual machines used by a production order-processing system. The database administrator wants to prevent any user, including administrators, from accidentally deleting or modifying resources in this resource group. The operations team needs a safeguard that requires an explicit action to be taken before any changes become possible, without affecting the ability to manage resources in other resource groups. Which Azure feature should the team implement?

Question 1mediummultiple choice

Full question →

A
Azure Policy with the Deny effect
Why wrong: Azure Policy with a Deny effect can prevent creation of non-compliant resources and block modifications that violate a policy rule, but it does not directly protect against deletion of existing resources by users with Owner or Contributor roles. Resource Locks are specifically designed for this purpose.
B
Azure RBAC role assignment (e.g., restrict to Reader role)
Why wrong: RBAC roles control who can perform actions, but a user with the Owner role can delete any resource. Changing roles for all users is not practical and does not prevent an Owner from removing the role assignment. Resource Locks are additive and require a lock removal step.
C
Azure Resource Lock (CanNotDelete)
Resource Locks (CanNotDelete or ReadOnly) prevent accidental deletion or modification of critical Azure resources. A user must first remove the lock, which provides a clear safeguard. This is the correct feature for the described scenario.
D
Azure management group
Why wrong: Management groups are used to organize subscriptions and apply governance at scale (e.g., policies, RBAC). They do not provide protection at the resource group level. Applying a management group is not a direct safeguard for a single resource group.

Full breakdown with real-world context →

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

Azure Resource Lock (CanNotDelete)

Option C is correct because Azure Resource Locks provide a safeguard that prevents accidental deletion or modification of critical resources at the subscription, resource group, or individual resource level. The CanNotDelete lock specifically blocks delete operations while allowing all read and update operations, and it requires an explicit unlock action before any changes can be made, even by administrators. This meets the requirement of protecting the 'Prod-Databases' resource group without affecting other resource groups.

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.

✗
Azure Policy with the Deny effect
Why it's wrong here
Azure Policy with a Deny effect can prevent creation of non-compliant resources and block modifications that violate a policy rule, but it does not directly protect against deletion of existing resources by users with Owner or Contributor roles. Resource Locks are specifically designed for this purpose.
✗
Azure RBAC role assignment (e.g., restrict to Reader role)
Why it's wrong here
RBAC roles control who can perform actions, but a user with the Owner role can delete any resource. Changing roles for all users is not practical and does not prevent an Owner from removing the role assignment. Resource Locks are additive and require a lock removal step.
✓
Azure Resource Lock (CanNotDelete)
Why this is correct
Resource Locks (CanNotDelete or ReadOnly) prevent accidental deletion or modification of critical Azure resources. A user must first remove the lock, which provides a clear safeguard. This is the correct feature for the described scenario.
Related concept
Read the scenario before looking for a memorised answer.
✗
Azure management group
Why it's wrong here
Management groups are used to organize subscriptions and apply governance at scale (e.g., policies, RBAC). They do not provide protection at the resource group level. Applying a management group is not a direct safeguard for a single resource group.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often confuse Azure Policy's Deny effect with a resource lock, thinking policy can provide a temporary safeguard, but policy is for compliance enforcement and lacks the explicit unlock mechanism that resource locks offer.

Detailed technical explanation

How to think about this question

Azure Resource Locks are applied as a management lock at the Azure Resource Manager (ARM) layer, overriding any RBAC permissions, including Owner roles, to enforce the lock. The CanNotDelete lock uses the ARM REST API's `Microsoft.Authorization/locks` resource type and prevents DELETE operations by returning a 403 Forbidden error, but allows PUT and PATCH operations for updates. A real-world scenario is protecting a production database resource group during a major deployment, where the lock is removed temporarily by an authorized user (e.g., via Azure CLI `az lock delete`) and then reapplied after changes are verified.

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.

TExam Day Tips

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.

What to study next

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this AZ-900 question test?

Describe Azure management and governance — This question tests Describe Azure management and governance — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Azure Resource Lock (CanNotDelete) — Option C is correct because Azure Resource Locks provide a safeguard that prevents accidental deletion or modification of critical resources at the subscription, resource group, or individual resource level. The CanNotDelete lock specifically blocks delete operations while allowing all read and update operations, and it requires an explicit unlock action before any changes can be made, even by administrators. This meets the requirement of protecting the 'Prod-Databases' resource group without affecting other resource groups.

What should I do if I get this AZ-900 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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