Refer to the exhibit. You are assigned a policy that deploys the Log Analytics agent to Linux VMs. After assigning this policy to a subscription, you notice that existing Linux VMs are not getting the agent deployed, but newly created VMs receive the agent. What is the most likely reason?
DeployIfNotExists effect only deploys on new resources; existing resources need a remediation task.
Why this answer
Option A is correct because the policy uses 'deployIfNotExists' effect, which requires remediation tasks to be triggered on existing resources; the policy assignment does not automatically remediate existing VMs. Option B is wrong because the policy evaluates all VMs regardless of region. Option C is wrong because the policy does not require a managed identity for deployment; the 'deployIfNotExists' effect uses the system-assigned identity.
Option D is wrong because the workspace ID is a required parameter, and if not provided, the assignment would fail.