Microsoft AZ-104 Exam Dumps, Practice Test Questions

NIC recreation does not update the remote peering’s advertised address prefixes. The new VMs already communicate within the hub, so the failure is not their local NIC allocation.

Allow forwarded traffic controls transit of packets forwarded through appliances across peering. It does not refresh the peering configuration’s stale address-space list, which is the observable problem in this case.

Overlapping address spaces prevent valid subnet design and can break peering. Deleting the valid new nonoverlapping range avoids the symptom rather than updating the remote routing information needed by the spoke.

Delegation is service-specific. A subnet delegated to another resource provider is not interchangeable with the required Microsoft.Web/serverFarms integration subnet.

NSGs regulate traffic but cannot change which Azure PaaS resource provider can use a delegated subnet. The integration still fails delegation validation.

Route-all affects eligible outbound routing after VNet integration is established; it cannot override an incompatible subnet delegation. App Service regional VNet integration requires a suitable Microsoft.Web/serverFarms delegated subnet.

A smaller subnet could exclude live IP configurations, and Azure may reject an incompatible prefix. The operator must plan around already allocated addresses rather than assuming a narrower prefix is safe.

Overlapping address prefixes do not create independent usable subnets. The address plan must respect Azure subnet and VNet range constraints without collisions.

NIC readdressing can disrupt applications and still fail if the proposed subnet prefix is invalid. Capacity and compatibility should be verified before changing live addresses.

VNet peering is a private Azure-VNet-to-Azure-VNet connectivity feature and has nonoverlapping address-space requirements. Allow forwarded traffic permits appropriately routed appliance forwarding but neither establishes a cross-premises IPsec tunnel nor performs VPN NAT. It cannot translate the overlapping branch prefix in this site-to-site VPN scenario.

Azure NAT Gateway provides outbound source translation from Azure subnets to the public Internet; it is not the site-to-site VPN gateway NAT feature. Attaching it to an application subnet does not apply ingress and egress address mappings to packets travelling through a VPN Gateway connection. The overlap must be handled in the supported VPN Gateway configuration.

Microsoft documents Azure VPN Gateway NAT for route-based IPsec cross-premises connections; NAT is not supported on VNet-to-VNet or point-to-site VPN connections. Choosing an unsupported connection type would not solve the overlapping branch-to-VNet network design. Use supported site-to-site NAT rules with nonoverlapping external mapped address spaces.

A route describes forwarding to a destination and does not enlarge the address ranges from which a VNet can allocate subnet IPs. The subnet-creation validation would still fail.

NSGs authorize or deny packet flows after address planning. They cannot make an out-of-range subnet address valid or change which private addresses belong to the VNet.

A subnet is part of its VNet's address space regardless of resource-group organization. First expand the VNet with a valid nonoverlapping prefix, then create the /24 subnet within it.

The IPv4 CIDR width is independent of the IPv6 subnet rule. Increasing IPv4 address capacity cannot make an IPv6 /80 valid in Azure, and it can disrupt the existing IPv4 allocation plan.

A /127 has only a pair of IPv6 addresses and is not an accepted Azure VNet IPv6 subnet size. Azure requires a full /64, even when a workload presently uses very few IPv6 addresses.

Azure supports dual-stack VNets and subnets with both IPv4 and IPv6 prefixes. Deleting the subnet-level IPv6 allocation would defeat the requirement to address application endpoints with IPv6.

Azure identifies the special gateway subnet by the subnet name GatewaySubnet, not the virtual network name. Renaming the VNet would not provide the required dedicated subnet and may unnecessarily disrupt resource naming.

A public IP may be needed for a VPN gateway, but it cannot replace the gateway subnet where the managed gateway resources are deployed. The failure concerns the mandatory subnet identity and placement, not solely external addressing.

App Service integration delegation is unrelated to Azure VPN gateway deployment. Delegating a general subnet to Microsoft.Web/serverFarms would not make Azure treat it as the required GatewaySubnet, and might make the subnet unavailable for other purposes.

GatewaySubnet is a designated subnet for gateway resources; its design requirements are different. Ordinary subnet usable capacity still follows Azure's five-address reservation rule.

The five reserved addresses apply separately to each subnet, not merely to the overall VNet. Ignoring them can lead to provisioning failures near subnet exhaustion.

NSGs are filtering resources rather than IP-consuming endpoints. The Azure platform reservation is fixed by subnet design, not by the number of filtering rule resources.

NSGs attach to subnets or network interfaces, not the VNet address-space definition. That placement would not create independent rules for the two tiers.

Route tables select next hops by destination prefixes; they do not match TCP ports as traffic security rules. The requested tier filtering requires NSGs or suitable security controls.

Private DNS zones control name resolution, not packet filtering. Separate zones would not provide the required distinct inbound or outbound subnet rule sets.

The VM obtains custom DNS settings through the VNet's DHCP network configuration. Altering its public-IP allocation is not a substitute for restarting or otherwise refreshing guest network settings.

NSG rules govern network admission, not the DNS server addresses already cached from DHCP in the running guest. The guest network configuration must be refreshed.

A private DNS zone provides records to resolvers in linked VNets but does not refresh a VM's already configured upstream DNS IP addresses.

Traffic filtering does not override delegation-specific subnet eligibility. An unsupported resource deployment can fail even if a network security group would isolate it.

Routes influence packet forwarding, not which Azure resource types a delegation permits. Clearing routes would not establish general-purpose eligibility and could harm connectivity.

Whether a VM has a public IP does not change the delegated subnet's resource-type restrictions. Azure validates subnet placement independently of public reachability.