The answer is Azure Resource Locks, specifically a ReadOnly lock, which is the correct feature to prevent Azure resources from being moved to a different resource group. This works because moving a resource is technically considered a modification operation, and a ReadOnly lock blocks all modifications and deletions, effectively freezing the resource in place. On the Microsoft Azure Fundamentals AZ-900 exam, this concept tests your understanding of governance controls versus security controls; a common trap is confusing Resource Locks with Azure Policy or RBAC roles, but remember that locks are a simple on/off switch applied at the subscription, resource group, or resource level. A useful memory tip is to think of a ReadOnly lock as a “super glue” that stops any change, including relocation, while a CanNotDelete lock only prevents removal but still allows moves.
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.
Which Azure feature can be used to prevent Azure resources in a subscription from being moved to a different resource group?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Resource Locks (ReadOnly)
Azure Resource Locks can prevent resources from being modified or deleted. A CanNotDelete lock prevents deletion. A ReadOnly lock prevents both modification and deletion — including moving a resource to a different resource group (which is considered a modification operation). Locks are inherited by child resources.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
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 deny effect for resource moves
Why it's wrong here
Azure Policy can deny resource creation based on properties but managing moves is more granular than standard policy deny.
✓
Azure Resource Locks (ReadOnly)
Why this is correct
A ReadOnly Resource Lock prevents all modifications including moving resources to different resource groups.
Related concept
Standard ACLs match source addresses.
✗
Azure RBAC without 'move' permissions
Why it's wrong here
Removing move permissions from RBAC is more granular; Resource Locks are a simpler administrative control.
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
Standard ACLs match source addresses.
Extended ACLs can match source, destination, protocol and ports.
The first matching ACL entry is used.
There is usually an implicit deny at the end.
TExam Day Tips
→Check inbound versus outbound direction.
→Read the ACL from top to bottom.
→Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
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-900 question in full detail.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related AZ-900 ACL questions on filtering logic and placement.
Describe Azure management and governance — This question tests Describe Azure management and governance — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Azure Resource Locks (ReadOnly) — Azure Resource Locks can prevent resources from being modified or deleted. A CanNotDelete lock prevents deletion. A ReadOnly lock prevents both modification and deletion — including moving a resource to a different resource group (which is considered a modification operation). Locks are inherited by child resources.
What should I do if I get this AZ-900 question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related AZ-900 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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Question Discussion
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