Microsoft Certified: Azure Fundamentals (AZ-900) Practice Exam

Which scenario would be appropriate to put a resource lock on?

1. An ExpressRoute circuit with connectivity back to your on-premises network.

2. A non-production virtual machine used to test occasional application builds.

3. A storage account used to temporarily store images processed in a development environment.

The correct answer is: An ExpressRoute circuit with connectivity back to your on-premises network.

Implementing a resource lock on an ExpressRoute circuit is appropriate as it is a critical resource that establishes a private connection between an organization's on-premises network and Azure. Resource locks help prevent accidental deletion or modifications to crucial resources, ensuring operational continuity and maintaining connectivity for business applications. Given that an ExpressRoute circuit can significantly impact network performance and availability, safeguarding it against unintended changes becomes vital for maintaining a stable infrastructure. In contrast, non-production virtual machines and storage accounts in development environments may not require the same level of protection. These resources are typically used for temporary testing or development purposes, where changes or deletions could be part of the standard workflow. Thus, locking them may hinder flexibility and speed in the development process, which is generally not a concern for more permanent and critical resources like an ExpressRoute circuit.