DC3 is a domain controller for the existing corp.fabrikam.com AD DS forest, deployed into Vnet1 in Azure. Domain controllers rely on AD-integrated DNS for locating other domain controllers, SRV records, and replication, so DC3 needs to host that zone itself, which requires installing the DNS Server role on DC3 and letting it host an AD-integrated copy of the corp.fabrikam.com zone. Azure ' s default virtual-network-provided DNS resolver has no awareness of AD DS records and cannot host or serve an AD-integrated zone, so every resource in Vnet1 that needs to locate the domain (including Azure VMs and DC3 ' s own replication partners) must be pointed at real DNS servers instead. That is accomplished by configuring the custom DNS Servers setting on Vnet1 to reference DC3 (and, once available, DC1 and DC2), which makes all Azure VMs in the virtual network resolve names through the AD-integrated DNS infrastructure rather than the platform resolver. An Azure DNS zone (public) or an Azure private DNS zone are separate, unrelated Azure-native DNS services that cannot host an AD-integrated zone and are not used for this scenario. Installing the DNS Server role on DC3 and pointing Vnet1 at it together satisfy the requirement.

Sync groups: 3. Storage Sync Services: 1.

In Azure File Sync, a sync group defines a single sync topology and can contain exactly one cloud endpoint (one Azure file share) but can contain multiple server endpoints (on-premises server locations) that all sync to that same file share. Fabrikam needs newyorkfiles to sync only to FS1, seattlefiles to sync only to FS2, and companyfiles to sync to both FS1 and FS2. Because each Azure file share can only belong to one sync group, newyorkfiles requires its own sync group with a single server endpoint on FS1, seattlefiles requires its own sync group with a single server endpoint on FS2, and companyfiles requires a third sync group whose one cloud endpoint (companyfiles) has two server endpoints, one on FS1 and one on FS2, which Azure File Sync fully supports within a single sync group. That gives a minimum of three sync groups. A Storage Sync Service is the top-level Azure resource that contains and manages sync groups, and there is no requirement here that forces the shares into separate Storage Sync Service instances (such as differing regions or subscriptions); a single Storage Sync Service can hold all three sync groups. Therefore only one Storage Sync Service is required.

Fabrikam ' s plan is to use Azure Policy to enforce configuration management policies across both its Azure and on-premises servers. Azure Policy ' s guest configuration capability, which evaluates and can remediate in-guest settings, only works against a server that is registered as an Azure resource. For an on-premises or non-Azure server, that registration is achieved by deploying the Azure Connected Machine agent, which onboards the machine as an Azure Arc-enabled server, gives it an Azure resource ID, and makes it a valid target for Azure Policy assignments, including guest configuration policies, in exactly the same way an Azure VM would be. Hybrid joining servers to Microsoft Entra ID affects identity and device management (such as Conditional Access) but does not make a server a valid Azure Policy target. A hybrid runbook worker lets Azure Automation runbooks execute on-premises but is unrelated to Azure Policy enforcement. The Azure Monitor agent collects telemetry into Log Analytics and Azure Monitor but does not register the server as an Arc resource or enable policy assignment on its own; it is typically deployed after Arc onboarding, not instead of it. Deploying the Azure Connected Machine agent is therefore the correct first step.