AZ-800 Exam Dumps - Microsoft Certified: Windows Server Hybrid Administrator Associate Questions and Answers

The exam materials explain that to add a new domain controller to an existing AD DS forest in Azure, you deploy a Windows Server IaaS VM and then promote it: “To extend on-premises AD DS into Azure, provision a Windows Server VM in Azure and run AD DS to create an additional domain controller for the existing domain.” Conversely, Azure Active Directory Domain Services (Azure AD DS) provides a managed domain that is separate from and not writable by your on-premises administrators—you “do not get domain admin rights or access to DCs”—so it cannot be used to add a DC (dc3.corp.fabrikam.com) to the existing corp.fabrikam.com forest. Azure AD Application Proxy and Azure AD administrative units are unrelated to deploying DCs. Therefore, the correct implementation is to deploy an Azure virtual machine in Vnet1, install AD DS/DNS, and promote it to become DC3 in the existing domain.

In the Administering Windows Server Hybrid Core Infrastructure materials (hybrid security and IaaS management), Just-In-Time (JIT) VM access from Microsoft Defender for Cloud is the prescribed way to require approval-based, time-bound Remote Desktop access to Azure VMs. The guide explains that JIT “locks down inbound traffic to management ports (for example, TCP/3389) and opens them only on request, for a limited time and only from approved source IPs.” Administrators request access; upon approval, Defender for Cloud creates a temporary NSG rule that expires automatically—you specify the maximum allowed window (e.g., 2 hours) and the ports. This matches the requirement: “Ensure that server administrators request approval before they can establish a Remote Desktop connection to an Azure virtual machine. If the request is approved, the connection must be established within two hours.” Alternatives don’t meet this: PIM governs Azure roles, not VM RDP port exposure; Azure Bastion provides secure RDP/SSH over TLS without public IPs but doesn’t provide approval/time-boxed gating; the Remote Desktop extension is for classic Cloud Services and not for policy-driven approval windows. JIT is the least-privilege, policy-enforced solution aligned with the exam’s hybrid security objectives.

In the Administering Windows Server Hybrid Core Infrastructure materials (AZ-800), Microsoft explains that Group Managed Service Accounts (gMSAs) are designed for services running on multiple servers and “provide automatic password management, simplified SPN management, and the ability to delegate the management to other administrators.” The guidance further states that before you can create any gMSA, “the domain must have a KDS root key so that the Key Distribution Service can generate and rotate strong, unique passwords for gMSAs on a schedule.” After the KDS root key is created, “use New-ADServiceAccount to create the gMSA and grant the computers (e.g., web servers) permission to retrieve the account password.” For IIS, the course notes specify that a gMSA can be used for app pools: “Configure the IIS application pool identity to a custom account and specify the gMSA name (ending with ‘$’) without a password; the password is managed automatically by AD and rotates by policy (for example, every 30 days).”

Mapping these requirements to the scenario: Webapp1 runs on WEB1 and WEB2 and must use the same service account with an automatic 30-day password change. Therefore, the correct sequence is: create the KDS root key, create the gMSA, and then set the IIS application pool to run under that account. This fulfills the security requirement while allowing both web servers to share the same, automatically-rotated credentials.

The Administering Windows Server Hybrid Core Infrastructure materials explain that Azure AD Password Protection for on-premises AD uses two components: the DC agent and the proxy service. The DC agent is installed on every domain controller because it “intercepts password set/change operations locally on the DC and evaluates them against the forbidden-password policy.” The guidance further states that to ensure consistent enforcement “the DC agent should be deployed to all DCs in the forest, since password changes may occur on any DC.” The proxy service is installed on member servers (not necessarily DCs) and “relays policy downloads and telemetry to Azure AD on behalf of DCs,” which satisfies environments where “domain controllers must not directly contact Internet endpoints.” Finally, configuration of the global and custom banned password lists is performed in Azure AD, where administrators “define tenant-wide custom banned terms; DCs obtain the policy via the proxy and cache it for local enforcement.”

Given Fabrikam’s requirement to prevent DCs from accessing the Internet, the proxy must run on non-DC servers (VM1 and VM2). To guarantee enforcement wherever a password is changed, the DC agent must be on all domain controllers. The custom banned password list is configured in the Azure AD tenant and then distributed to on-premises DCs via the proxy.

The exam materials for Administering Windows Server Hybrid Core Infrastructure explain that when replacing private WAN links with Azure, Azure Virtual WAN (vWAN) can be used to centralize connectivity. For private connectivity, ExpressRoute integrates directly with a vWAN hub by deploying an ExpressRoute gateway in the hub. The gateway is the Azure resource that terminates ExpressRoute and enables hub-and-spoke routing to connected VNets (such as Vnet1). The guides emphasize: “In a Virtual WAN hub, use the ExpressRoute gateway to connect ExpressRoute circuits and propagate routes across the hub to your virtual networks.”

On-premises, each site (New York and Seattle) requires an ExpressRoute circuit connection provisioned via a connectivity provider. The circuit is the dedicated private connection from the customer edge to Microsoft’s edge and is what the office sites actually use; it’s then linked to the vWAN hub’s ExpressRoute gateway. The same materials note that Site-to-Site VPN is an alternative transport but is not required when ExpressRoute is mandated. Likewise, Application Gateway is a Layer-7 load balancer for HTTP/S traffic, and on-premises data gateway relates to Power BI/Power Platform hybrid connectivity, neither of which establishes network transport between offices and Azure.

Therefore, to meet the requirement “connect both on-premises offices to Vnet1 by using ExpressRoute,” configure an ExpressRoute gateway on the vWAN hub and ExpressRoute circuit connections in the offices.

The domain services security section describes the RODC Filtered Attribute Set (FAS), which prevents selected attributes from replicating to Read-Only Domain Controllers. The curriculum explains: “Attributes that must not be exposed on RODCs are added to the RODC filtered attribute set. This setting is defined in the schema partition; once an attribute is flagged as CONFIDENTIAL and added to FAS, it is not replicated to any RODC.” Because the attacker may have compromised RODC1’s computer account, protection requires ensuring sensitive attributes (e.g., employeeNumber) are never present on that RODC. Changes for FAS membership and the confidential bit are schema-level operations and apply forest-wide. Modifying the domain or configuration partitions will not change which attributes replicate to RODCs, and the global catalog is not a writable partition; it aggregates a subset of attributes but honors the schema’s FAS configuration. Therefore, to ensure Employee-Number cannot be viewed if RODC1 is compromised, you modify the schema to place the attribute in the RODC filtered attribute set (and, if required, mark it confidential).

In the Administering Windows Server Hybrid Core Infrastructure guidance for extending AD DS into Azure, Microsoft states that when you place a domain controller in an Azure virtual network you must run DNS on that domain controller and point the VNet to that DNS server: “Domain controllers in Azure IaaS should host the AD-integrated DNS zone, and the virtual network’s DNS server setting must reference those DC/DNS IPs so Azure VMs use AD DNS rather than the Azure-provided resolver.” The materials also emphasize that Azure’s default DNS cannot host or manage AD DS zones, so custom DNS is required for domain-joined workloads. Therefore, to meet the requirement you (1) install the DNS Server role on DC3 so it can host the corp.fabrikam.com AD-integrated zone (F), and (2) configure the DNS Servers setting on Vnet1 to the IP of DC3 (and any additional DCs), ensuring all Azure VMs in Vnet1 resolve the domain via AD DNS (D). Creating a public Azure DNS zone or a Private DNS zone with the same AD name is not appropriate for AD-integrated name resolution. This design also supports the security requirement of preventing domain controllers from relying on Internet-facing resolvers.

In Administering Windows Server Hybrid Core Infrastructure, Microsoft states that high availability for DHCP on Windows Server is achieved by using DHCP failover rather than the legacy split-scope (80/20) model. The guidance explains that DHCP failover “synchronizes lease data between two DHCP servers and can be configured in Load Balance or Hot Standby mode on a per-scope basis,” and that you enable it on each DHCP scope to create a partner relationship that automatically replicates scope configuration and active leases. This meets the requirement to keep address assignment available if one DHCP server is down.

The same materials further note that DHCP broadcasts do not traverse routers; therefore, when the partner server is reachable across a routed boundary (another site/subnet), you must configure the router as a DHCP relay (IP helper) to forward DHCPDISCOVER messages to the remote DHCP server(s). The text emphasizes: “When clients and DHCP servers are on different subnets, configure a relay agent on the router to forward requests to the DHCP server IP addresses.”

Applying this to Fabrikam: create DHCP failover between DHCP1 (Scope1) and DHCP2 (Scope2) (E) and configure the routers in New York and Seattle as DHCP relays that forward to both DHCP servers (B). You do not use Failover Clustering for DHCP here, and you do not create extra 25% scopes; those are split-scope practices superseded by DHCP failover.