Microsoft Azure Fundamentals AZ-900 Practice Exam 2025 – Complete Study Resource

Locking a resource group as read-only is true because when you apply a read-only lock to a resource group in Azure, it restricts any modifications to all resources contained within that group. This means that no actions that would alter the state of the resources, such as creating, updating, or deleting them, can be performed until the lock is removed.

This feature is particularly useful for ensuring that critical resources do not get inadvertently changed or deleted during operations, providing a layer of protection for valuable assets within the cloud environment. By implementing a read-only lock at the resource group level, you effectively safeguard the entire collection of resources associated with that group from any unauthorized or accidental modifications.

It's important to note that while the lock protects all the resources in the group, it does not prevent read operations, so users can still view and access the resources without issue, as long as they have the necessary permissions.