VMware 3V0-25.25 Practice Test 73
Question 720
An architect proposes the following step: align the NSX VLAN segment tag with the physical trunk allowed VLANs. The context is: A VLAN-backed Edge uplink cannot ARP its directly attached router despite correct IP addresses. What is the strongest technical reason for that decision?
- An expired or untrusted management certificate blocks TLS clients independently of network IP reachability.
- VCF 9 VPC routes may depend on the explicit TGW static redistribution class.
- Modern NSX supports stateful services on eligible active-active Tier-0 designs, subject to documented feature limitations.
- A VLAN mismatch prevents local neighbor discovery before routing protocols can operate.
Explanation
Correct Answer
D:A VLAN mismatch prevents local neighbor discovery before routing protocols can operate. This explains the proposed decision in the current fabric vlan mismatch situation. The intended outcome is to restore Layer-2 adjacency on the correct external uplink VLAN, and verification would show: The Edge and leaf exchange neighbor traffic after the trunk/VLAN alignment.
Incorrect Answers
A:This statement can describe a certificate expiration fault problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to repair management-plane trust without disabling authentication protections; here the relevant requirement is to restore Layer-2 adjacency on the correct external uplink VLAN.
B:This statement can describe a transit gateway route missing problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to advertise Transit Gateway routes required for VPC external access; here the relevant requirement is to restore Layer-2 adjacency on the correct external uplink VLAN.
C:This statement can describe a stateful active-active support problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to select a valid HA architecture for required stateful services; here the relevant requirement is to restore Layer-2 adjacency on the correct external uplink VLAN.
Question 721
A development VPC subnet should reach internal services but not accept direct inbound corporate routing. The engineering team needs to apply the approved private subnet and connectivity design. What action best addresses the immediate requirement?
- use a private VPC subnet with appropriate project connectivity policy
- verify Edge virtual NIC and VLAN uplink mapping independently of the management NIC
- include the route's network in an allowed External IP Block and matching connection profile
- use scoped identity and validated API permissions for the tenant policy operation
Explanation
Correct Answer
A:Private and public subnet choices differ in how they are exposed through external connections. The selected action, use a private VPC subnet with appropriate project connectivity policy, directly supports the specified goal to apply the approved private subnet and connectivity design. A useful confirmation is: Approved outbound requests work while the private subnet is not advertised for direct inbound reachability.
Incorrect Answers
B:Verify Edge virtual NIC and VLAN uplink mapping independently of the management NIC would address the separate case of edge interface mapping, where the objective is to connect gateway uplinks to the intended physical switching path. Management reachability does not establish external dataplane interface readiness. Here the requirement is instead to apply the approved private subnet and connectivity design; that step does not directly satisfy it.
C:Include the route's network in an allowed External IP Block and matching connection profile would address the separate case of vpc external ip block policy, where the objective is to permit the intended VPC external network through the provider's outbound advertisement controls. Outbound advertisement filters can suppress routes not covered by an approved External IP Block. Here the requirement is instead to apply the approved private subnet and connectivity design; that step does not directly satisfy it.
D:Use scoped identity and validated API permissions for the tenant policy operation would address the separate case of network policy api scope, where the objective is to restrict automated NSX changes to the intended object boundary. Automation credentials must follow least privilege and supported policy resource paths. Here the requirement is instead to apply the approved private subnet and connectivity design; that step does not directly satisfy it.
Question 722
An architect proposes the following step: verify supported session ownership and redirection behavior on the gateway. The context is: A response enters a different Edge node from the one that processed a stateful outbound flow. What is the strongest technical reason for that decision?
- NSX transport-node telemetry directly describes local tunnel readiness and realization errors.
- A stateful HA service may direct a response to the Edge that owns its connection state.
- Logical HA cannot survive the failure of a single shared physical dependency.
- An Edge can reach physical peers through uplinks while its separate overlay tunnel interfaces are misconfigured.
Explanation
Correct Answer
B:A stateful HA service may direct a response to the Edge that owns its connection state. This explains the proposed decision in the current stateful return-path ownership situation. The intended outcome is to preserve stateful flow correctness under multiple Edge routes, and verification would show: The response reaches the owning flow-state handler and the session remains established.
Incorrect Answers
A:This statement can describe a transport health diagnostics problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to inspect the host's NSX transport configuration and runtime state; here the relevant requirement is to preserve stateful flow correctness under multiple Edge routes.
C:This statement can describe a ha fault-domain design problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to maintain gateway availability after a host hardware failure; here the relevant requirement is to preserve stateful flow correctness under multiple Edge routes.
D:This statement can describe a edge tep vlan inconsistency problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to bring Edge transport traffic onto the intended tunnel network; here the relevant requirement is to preserve stateful flow correctness under multiple Edge routes.
Question 723
An architect proposes the following step: enable appropriate Tier-1 route advertisement and Tier-0 redistribution. The context is: The Tier-0 has a valid BGP neighbor, but workload networks behind a Tier-1 are absent upstream. What is the strongest technical reason for that decision?
- An Edge appliance must be prepared as a transport node before it can provide intended gateway data-plane services.
- Audit records should attribute changes to their initiators and affected objects.
- Routes must be advertised from the Tier-1 and exported from the Tier-0 to reach physical peers.
- Centralized gateway services depend on eligible Edge nodes rather than distributed routing alone.
Explanation
Correct Answer
C:Routes must be advertised from the Tier-1 and exported from the Tier-0 to reach physical peers. This explains the proposed decision in the current tier-1 route advertisement situation. The intended outcome is to expose the intended Tier-1 segment routes northbound, and verification would show: Upstream routing learns the intended workload subnet after both advertisement stages.
Incorrect Answers
A:This statement can describe a edge transport preparation problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to complete the NSX transport-node realization of the Edge; here the relevant requirement is to expose the intended Tier-1 segment routes northbound.
B:This statement can describe a project audit ownership problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to retain accountable change records across tenant scopes; here the relevant requirement is to expose the intended Tier-1 segment routes northbound.
D:This statement can describe a service router allocation problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to make a service-capable Tier-1 instance operational; here the relevant requirement is to expose the intended Tier-1 segment routes northbound.
Question 724
A change review examines the following situation: High-volume external traffic must use several equal-cost next hops rather than a single saturated gateway path. Which practice would most directly undermine the requirement to distribute eligible north-south flows across redundant paths?
- assuming an east-west DFW rule automatically represents all gateway service policies
- treating every discovered NSX Manager as one shared undifferentiated instance
- comparing unrelated peak-hour and quiet-hour traffic without normalizing load
- assuming ECMP splits individual TCP packets evenly across all paths
Explanation
Correct Answer
D:The anti-pattern, assuming ECMP splits individual TCP packets evenly across all paths, directly conflicts with the requirement to distribute eligible north-south flows across redundant paths. ECMP selects among equal-cost routes, typically per flow, improving aggregate path capacity and redundancy. The safer action is to configure supported Tier-0 active-active ECMP with matching upstream routing.
Incorrect Answers
A:That practice primarily harms the distinct gateway firewall placement activity, in which the goal is to filter traffic at the centralized gateway boundary. Its failure mechanism is less direct for this specific ecmp load spread review. Here the key requirement is to distribute eligible north-south flows across redundant paths.
B:That practice primarily harms the distinct fleet inventory clarity activity, in which the goal is to map networking control components to their owning VCF instances. Its failure mechanism is less direct for this specific ecmp load spread review. Here the key requirement is to distribute eligible north-south flows across redundant paths.
C:That practice primarily harms the distinct reproducible optimization activity, in which the goal is to validate a performance change using controlled measurements. Its failure mechanism is less direct for this specific ecmp load spread review. Here the key requirement is to distribute eligible north-south flows across redundant paths.
Question 725
A reviewer must validate the intended NSX outcome. Situation: A private subnet uses SNAT for outbound partner access and receives a reply to the translated address. Which result most directly demonstrates that the team can explain the stateful source and return address transformations?
- Captures show the translated address outside and the correct original workload destination inside.
- The failed next hop is withdrawn and traffic resumes through a healthy peer.
- Managers show synchronized time and related authentication errors disappear.
- A path trace shows the host dataplane forwarding directly between the relevant vNIC ports.
Explanation
Correct Answer
A:Captures show the translated address outside and the correct original workload destination inside. This observation validates the specified nat egress and return walk outcome. SNAT maps source addresses outbound, and the corresponding state restores the internal destination on replies.
Incorrect Answers
B:This would validate peer loss convergence rather than the needed nat egress and return walk result. Fast liveness detection and route recomputation determine how quickly traffic leaves a failed path. For the present case, the evidence must show that the team can explain the stateful source and return address transformations.
C:This would validate clock skew management fault rather than the needed nat egress and return walk result. Large clock offsets can disrupt certificate or token validation and complicate troubleshooting timelines. For the present case, the evidence must show that the team can explain the stateful source and return address transformations.
D:This would validate same-host same-segment packet walk rather than the needed nat egress and return walk result. Same-segment local unicast switching need not traverse Tier-1, Tier-0 or an Edge service router. For the present case, the evidence must show that the team can explain the stateful source and return address transformations.
Question 726
An architect proposes the following step: apply a validated transport-node profile with the correct switch, TEP and zones. The context is: A vSphere cluster will have twelve NSX-enabled hosts and must use uniform uplink settings. What is the strongest technical reason for that decision?
- Compute-manager integration supplies vSphere inventory context needed by associated NSX workflows.
- Profiles reduce per-host drift by applying common transport-node settings.
- Declarative or scripted API provisioning reduces manual drift when changes are reviewed and tested.
- Mixed versions can be supported only within documented lifecycle boundaries.
Explanation
Correct Answer
B:Profiles reduce per-host drift by applying common transport-node settings. This explains the proposed decision in the current host transport-node profile situation. The intended outcome is to prepare NSX transport consistently across a managed cluster, and verification would show: All intended hosts show successful preparation and matching uplink/zone configuration.
Incorrect Answers
A:This statement can describe a compute manager integration problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to make vSphere compute resources visible for integrated NSX operations; here the relevant requirement is to prepare NSX transport consistently across a managed cluster.
C:This statement can describe a infrastructure as code problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to define NSX networking changes as reviewable version-controlled configuration; here the relevant requirement is to prepare NSX transport consistently across a managed cluster.
D:This statement can describe a upgrade compatibility precheck problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to keep NSX and VCF component releases in supported combinations; here the relevant requirement is to prepare NSX transport consistently across a managed cluster.
Question 727
A payment network inside NSX must exchange subnet routes with the campus physical fabric. The engineering team needs to design a clear north-south routing demarcation. What action best addresses the immediate requirement?
- compare intended policy and realized configuration across locations
- test application traffic, gateway reachability, and policy after a controlled Federation site-failover scenario
- connect a Tier-0 service router over appropriate VLAN uplinks to physical routers
- design an IP-routed underlay with TEP reachability and overlay segment membership
Explanation
Correct Answer
C:The Tier-0 external interface provides the route exchange boundary and accommodates physical-network reachability. The selected action, connect a Tier-0 service router over appropriate VLAN uplinks to physical routers, directly supports the specified goal to design a clear north-south routing demarcation. A useful confirmation is: BGP adjacency and advertised/received prefix tables agree at the virtual and physical sides.
Incorrect Answers
A:Compare intended policy and realized configuration across locations would address the separate case of policy drift monitoring, where the objective is to detect and review unintended divergence from approved fleet networking configuration. Detecting drift allows operations to separate deliberate local exceptions from accidental changes. Here the requirement is instead to design a clear north-south routing demarcation; that step does not directly satisfy it.
B:Test application traffic, gateway reachability, and policy after a controlled Federation site-failover scenario would address the separate case of disaster recovery verification, where the objective is to prove end-to-end multisite recovery readiness. Recovery validity requires more than deployment status; the remote site must pass actual network and security traffic checks. Here the requirement is instead to design a clear north-south routing demarcation; that step does not directly satisfy it.
D:Design an IP-routed underlay with TEP reachability and overlay segment membership would address the separate case of overlay fabric reachability, where the objective is to support L2 semantics without extending a large physical VLAN everywhere. Overlay encapsulation carries L2 traffic across the IP underlay, separating tenant switching from fabric VLAN sprawl. Here the requirement is instead to design a clear north-south routing demarcation; that step does not directly satisfy it.
Question 728
An architect proposes the following step: schedule Global Manager backups and rehearse supported restoration. The context is: A compliance review asks how global policy can be restored after a major management outage. What is the strongest technical reason for that decision?
- Every transport endpoint needs an address reachable over its intended underlay.
- VRF routing tables permit independent tenant route contexts on eligible Tier-0 architectures.
- Federation requires a functioning global management layer connected to eligible local management instances.
- Recovery needs trustworthy backups of global policy and a procedure to restore management relationships.
Explanation
Correct Answer
D:Recovery needs trustworthy backups of global policy and a procedure to restore management relationships. This explains the proposed decision in the current global backup recovery situation. The intended outcome is to recover the shared management intent with a tested procedure, and verification would show: A recovery test restores global objects and reestablishes healthy Local Manager synchronization.
Incorrect Answers
A:This statement can describe a tep ip allocation problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to provide unique reachable tunnel endpoint addresses for transport hosts; here the relevant requirement is to recover the shared management intent with a tested procedure.
B:This statement can describe a vrf tenant route isolation problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to keep tenant external routes logically isolated; here the relevant requirement is to recover the shared management intent with a tested procedure.
C:This statement can describe a manager deployment order problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to onboard the NSX site into a supported multi-location Federation; here the relevant requirement is to recover the shared management intent with a tested procedure.
Question 729
A change review examines the following situation: A workload connects to a corporate application through a Tier-1, Tier-0 and external BGP-linked uplink. Which practice would most directly undermine the requirement to describe the sequence from tenant segment to physical network?
- assuming the packet leaves directly from the VM overlay switch into physical BGP without routing tiers
- deleting every NSX logical segment because one host's uplink mapping differs
- assuming that identical segment names across sites eliminate the need for remote tunnel connectivity
- relying only on a management dashboard color without inspecting the disputed packet
Explanation
Correct Answer
A:The anti-pattern, assuming the packet leaves directly from the VM overlay switch into physical BGP without routing tiers, directly conflicts with the requirement to describe the sequence from tenant segment to physical network. North-south paths cross the logical routing tiers and any centralized services before leaving via a physical uplink. The safer action is to walk segment to Tier-1 distributed routing, required service-router hops, Tier-0 external interface and fabric.
Incorrect Answers
B:That practice primarily harms the distinct host profile drift activity, in which the goal is to find the host-specific transport configuration difference. Its failure mechanism is less direct for this specific north-south packet walk review. Here the key requirement is to describe the sequence from tenant segment to physical network.
C:That practice primarily harms the distinct federation stretched-segment path activity, in which the goal is to identify cross-site encapsulated Layer-2 forwarding and its policy controls. Its failure mechanism is less direct for this specific north-south packet walk review. Here the key requirement is to describe the sequence from tenant segment to physical network.
D:That practice primarily harms the distinct packet capture evidence activity, in which the goal is to observe actual dataplane packet headers at the relevant boundaries. Its failure mechanism is less direct for this specific north-south packet walk review. Here the key requirement is to describe the sequence from tenant segment to physical network.
Question 730
A global security rule was created but does not appear in enforcement at one connected site. The engineering team needs to realize intended global policy on every targeted Local Manager. What action best addresses the immediate requirement?
- schedule Global Manager backups and rehearse supported restoration
- check global-group scope and per-site realization status before repairing the targeting issue
- coordinate trunk VLAN admission with the switch team
- configure a supported IPsec VPN service with matching proposals and routes
Explanation
Correct Answer
B:A saved global object is not sufficient if the local site never realizes the policy. The selected action, check global-group scope and per-site realization status before repairing the targeting issue, directly supports the specified goal to realize intended global policy on every targeted Local Manager. A useful confirmation is: The intended rule and group show successful realization at the affected local site.
Incorrect Answers
A:Schedule Global Manager backups and rehearse supported restoration would address the separate case of global backup recovery, where the objective is to recover the shared management intent with a tested procedure. Recovery needs trustworthy backups of global policy and a procedure to restore management relationships. Here the requirement is instead to realize intended global policy on every targeted Local Manager; that step does not directly satisfy it.
C:Coordinate trunk VLAN admission with the switch team would address the separate case of physical vlan availability, where the objective is to make the physical fabric carry the VLAN used by the NSX segment. A VLAN-backed NSX network depends on the underlying tagged L2 connectivity. Here the requirement is instead to realize intended global policy on every targeted Local Manager; that step does not directly satisfy it.
D:Configure a supported IPsec VPN service with matching proposals and routes would address the separate case of ipsec vpn connectivity, where the objective is to protect data in transit between controlled gateway endpoints. IPsec negotiates security associations and encrypts traffic for the agreed protected networks. Here the requirement is instead to realize intended global policy on every targeted Local Manager; that step does not directly satisfy it.