VMware 3V0-25.25 Practice Test 84
Question 830
An application needs north-south BGP reachability and a centralized NAT service. The engineering team needs to place stateful and external-routing services in the right data plane. What action best addresses the immediate requirement?
- keep the eligible east-west path on distributed logical routing
- deploy suitable NSX Edge capacity and associate service routers with the needed gateways
- prepare the cluster as NSX transport nodes with compatible switching and transport-zone assignment
- design an active-active Tier-0 with healthy external peerings and compatible services
Explanation
Correct Answer
B:Edge nodes host centralized service-router functions that cannot be implemented solely by hypervisor distributed forwarding. The selected action, deploy suitable NSX Edge capacity and associate service routers with the needed gateways, directly supports the specified goal to place stateful and external-routing services in the right data plane. A useful confirmation is: The service gateway is realized on appropriate Edge nodes and external routes and NAT translation operate.
Incorrect Answers
A:Keep the eligible east-west path on distributed logical routing would address the separate case of same-host east-west locality, where the objective is to minimize unnecessary network transit while retaining routed segmentation. Distributed routing localizes many inter-segment flows on transport hosts, avoiding a centralized Edge hop. Here the requirement is instead to place stateful and external-routing services in the right data plane; that step does not directly satisfy it.
C:Prepare the cluster as NSX transport nodes with compatible switching and transport-zone assignment would address the separate case of transport node eligibility, where the objective is to turn ordinary hypervisor hosts into participating NSX data-plane nodes. Being managed by vCenter does not by itself create NSX transport-node participation. Here the requirement is instead to place stateful and external-routing services in the right data plane; that step does not directly satisfy it.
D:Design an active-active Tier-0 with healthy external peerings and compatible services would address the separate case of active-active transit capacity, where the objective is to support north-south path sharing without a single forwarding Edge. Active-active service-router routing permits multiple Edge paths when configuration and service constraints allow. Here the requirement is instead to place stateful and external-routing services in the right data plane; that step does not directly satisfy it.
Question 831
A reviewer must validate the intended NSX outcome. Situation: A shared administration password used by network automation may have been exposed. Which result most directly demonstrates that the team can rotate secrets while preserving authorized NSX integrations?
- Known NSX test events appear on the collector and remain retrievable under policy.
- Distinct tests confirm inter-subnet routing, lease issuance, resolver forwarding and translated egress as required.
- Old credentials are rejected and authorized integrations authenticate with new stored secrets.
- A controlled Manager node restart leaves the Global Manager management service accessible.
Explanation
Correct Answer
C:Old credentials are rejected and authorized integrations authenticate with new stored secrets. This observation validates the specified credential rotation outcome. Credential handling must address exposure without leaving broken or unknown access paths.
Incorrect Answers
A:This would validate syslog destination rather than the needed credential rotation result. Remote log collectors can hold events beyond local appliance rotation while preserving timestamps. For the present case, the evidence must show that the team can rotate secrets while preserving authorized NSX integrations.
B:This would validate tier-1 gateway smoke test rather than the needed credential rotation result. Creating one logical router does not automatically configure every optional service on it. For the present case, the evidence must show that the team can rotate secrets while preserving authorized NSX integrations.
D:This would validate global manager availability rather than the needed credential rotation result. Multiple eligible Manager nodes provide management service availability beyond one VM. For the present case, the evidence must show that the team can rotate secrets while preserving authorized NSX integrations.
Question 832
Application segments can communicate locally but need an external default route. The engineering team needs to connect application-facing logical routing to the enterprise external tier. What action best addresses the immediate requirement?
- correct transport VLAN and uplink-profile mapping on the affected hosts
- configure route redistribution for the required connected and Tier-1 advertised sources
- configure the proper Tier-1 SNAT rule with correct match and translated address
- attach the Tier-1 gateway to the designated Tier-0 gateway
Explanation
Correct Answer
D:The Tier-1 uses northbound connectivity through Tier-0 for external access. The selected action, attach the Tier-1 gateway to the designated Tier-0 gateway, directly supports the specified goal to connect application-facing logical routing to the enterprise external tier. A useful confirmation is: A segment workload reaches approved external destinations and the logical routes are present.
Incorrect Answers
A:Correct transport VLAN and uplink-profile mapping on the affected hosts would address the separate case of uplink profile vlan, where the objective is to match the TEP VLAN tagging expected by the physical trunk. A wrong transport VLAN prevents endpoint IP traffic from reaching the required underlay even if VMs are powered on. Here the requirement is instead to connect application-facing logical routing to the enterprise external tier; that step does not directly satisfy it.
B:Configure route redistribution for the required connected and Tier-1 advertised sources would address the separate case of route redistribution sources, where the objective is to advertise eligible internal routes through the Tier-0. BGP adjacency alone does not guarantee that all relevant NSX network prefixes are exported. Here the requirement is instead to connect application-facing logical routing to the enterprise external tier; that step does not directly satisfy it.
C:Configure the proper Tier-1 SNAT rule with correct match and translated address would address the separate case of tier-1 nat policy, where the objective is to translate eligible egress source addresses at the intended Tier-1 service boundary. SNAT replaces the source for matching outbound flows so a return path can address the translated endpoint. Here the requirement is instead to connect application-facing logical routing to the enterprise external tier; that step does not directly satisfy it.
Question 833
A change review examines the following situation: An NSX management environment has no recent configuration backup before a planned upgrade. Which practice would most directly undermine the requirement to preserve a supported recovery point for the management configuration?
- assuming a hypervisor VM snapshot alone is the supported NSX configuration backup process
- ignoring NTP because all Manager IP addresses still respond to ping
- adding additional overlapping catch-all rules ahead of the intended specific translation
- assuming a static route alone encrypts traffic over the public network
Explanation
Correct Answer
A:The anti-pattern, assuming a hypervisor VM snapshot alone is the supported NSX configuration backup process, directly conflicts with the requirement to preserve a supported recovery point for the management configuration. Reliable backups protect management and policy configuration when an upgrade or outage requires restoration. The safer action is to schedule and verify NSX Manager backups before changing component versions.
Incorrect Answers
B:That practice primarily harms the distinct ntp drift activity, in which the goal is to restore trustworthy event timelines and time-sensitive authentication. Its failure mechanism is less direct for this specific manager backup schedule review. Here the key requirement is to preserve a supported recovery point for the management configuration.
C:That practice primarily harms the distinct nat rule overlap activity, in which the goal is to make the specific translation take effect for the partner destination. Its failure mechanism is less direct for this specific manager backup schedule review. Here the key requirement is to preserve a supported recovery point for the management configuration.
D:That practice primarily harms the distinct ipsec vpn connectivity activity, in which the goal is to protect data in transit between controlled gateway endpoints. Its failure mechanism is less direct for this specific manager backup schedule review. Here the key requirement is to preserve a supported recovery point for the management configuration.
Question 834
An application team needs its own managed virtual network without administrator-level access to all NSX gateways. The engineering team needs to provide delegated workload networking within defined tenant limits. What action best addresses the immediate requirement?
- query NSX logs in the configured central logging system
- create a VPC within an authorized NSX Project and connectivity profile
- inspect vCenter host/NIC alarms alongside NSX transport-node status
- verify separate VPC or Project routing contexts and control any shared external connection
Explanation
Correct Answer
B:NSX VPC enables scoped self-service networking with provider-defined connectivity and constraints. The selected action, create a VPC within an authorized NSX Project and connectivity profile, directly supports the specified goal to provide delegated workload networking within defined tenant limits. A useful confirmation is: The team can create VPC subnets inside its project but cannot change unrelated infrastructure gateways.
Incorrect Answers
A:Query NSX logs in the configured central logging system would address the separate case of centralized logs, where the objective is to correlate timestamped NSX gateway and neighbor events. Time-ordered logs can show routing state changes and related process errors more precisely than an aggregate green/red health icon. Here the requirement is instead to provide delegated workload networking within defined tenant limits; that step does not directly satisfy it.
C:Inspect vCenter host/NIC alarms alongside NSX transport-node status would address the separate case of vcenter host dependency, where the objective is to correlate NSX transport symptoms with the underlying vSphere host hardware state. Hypervisor hardware failures can affect transport forwarding even when NSX logical policy is valid. Here the requirement is instead to provide delegated workload networking within defined tenant limits; that step does not directly satisfy it.
D:Verify separate VPC or Project routing contexts and control any shared external connection would address the separate case of overlapping tenant addressing, where the objective is to preserve tenant route-context isolation when address overlap is permitted. Overlapping private IPs can coexist only when their routing contexts and interconnect policies avoid ambiguity. Here the requirement is instead to provide delegated workload networking within defined tenant limits; that step does not directly satisfy it.
Question 835
A reviewer must validate the intended NSX outcome. Situation: A platform team must let new application operators create VPC subnets without waiting for a global admin. Which result most directly demonstrates that the team can expose only approved self-service network capabilities?
- Tenant operators see and manage only the objects authorized in their own Project.
- A test interface sends frames with the expected VLAN tag and reaches the upstream peer.
- Application operators create an allowed VPC subnet without gaining provider-level access.
- The firewall and VM exchange ARP/neighbor traffic on the agreed VLAN.
Explanation
Correct Answer
C:Application operators create an allowed VPC subnet without gaining provider-level access. This observation validates the specified onboarding delegation outcome. Delegation works when rights and available network resources are scoped together.
Incorrect Answers
A:This would validate project isolation policy rather than the needed onboarding delegation result. Projects provide administrative and policy boundaries for delegated networking. For the present case, the evidence must show that the team can expose only approved self-service network capabilities.
B:This would validate vlan transport zone rather than the needed onboarding delegation result. VLAN-backed segments bridge logical interfaces to matching physical Layer-2 network identifiers. For the present case, the evidence must show that the team can expose only approved self-service network capabilities.
D:This would validate vlan segment creation rather than the needed onboarding delegation result. VLAN-backed segments use physical tagged forwarding for integration with non-overlay devices. For the present case, the evidence must show that the team can expose only approved self-service network capabilities.
Question 836
An architect proposes the following step: inspect Edge CPU, memory, dataplane throughput and interface drops before resizing or scaling. The context is: A Tier-0 gateway drops packets under peak demand while BGP sessions stay established. What is the strongest technical reason for that decision?
- A VLAN mismatch prevents local neighbor discovery before routing protocols can operate.
- HA needs enough remaining capacity after a failure, not only multiple available devices.
- An expired or untrusted management certificate blocks TLS clients independently of network IP reachability.
- A saturated Edge can lose traffic even with a healthy routing control plane.
Explanation
Correct Answer
D:A saturated Edge can lose traffic even with a healthy routing control plane. This explains the proposed decision in the current edge resource exhaustion situation. The intended outcome is to recover dataplane headroom on the congested gateway, and verification would show: After appropriate capacity repair, Edge resource counters and packet loss return within targets.
Incorrect Answers
A:This statement can describe a fabric vlan mismatch problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to restore Layer-2 adjacency on the correct external uplink VLAN; here the relevant requirement is to recover dataplane headroom on the congested gateway.
B:This statement can describe a capacity after failure problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to design resilient capacity rather than only normal-operation capacity; here the relevant requirement is to recover dataplane headroom on the congested gateway.
C: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 recover dataplane headroom on the congested gateway.
Question 837
A reviewer must validate the intended NSX outcome. Situation: A tenant needs multiple northbound paths with stateless external routing and sufficient Edge capacity. Which result most directly demonstrates that the team can support north-south path sharing without a single forwarding Edge?
- BGP and path observations show eligible external flows using multiple healthy Edge paths.
- VMs at either site attach to the intended stretched segment and tested cross-site flows succeed.
- An application user can modify only assigned project resources and not unrelated fleet gateways.
- Forward and return packet captures agree with the chosen stateful service placement.
Explanation
Correct Answer
A:BGP and path observations show eligible external flows using multiple healthy Edge paths. This observation validates the specified active-active transit capacity outcome. Active-active service-router routing permits multiple Edge paths when configuration and service constraints allow.
Incorrect Answers
B:This would validate stretched network eligibility rather than the needed active-active transit capacity result. A stretched logical network depends on supported Federation design and working cross-site transport connectivity. For the present case, the evidence must show that the team can support north-south path sharing without a single forwarding Edge.
C:This would validate role boundaries across teams rather than the needed active-active transit capacity result. Scoped privileges let platform teams maintain common infrastructure without giving tenants global access. For the present case, the evidence must show that the team can support north-south path sharing without a single forwarding Edge.
D:This would validate stateful service symmetry rather than the needed active-active transit capacity result. Stateful services require consistent flow-state processing; not every HA and ECMP combination provides that without specific support. For the present case, the evidence must show that the team can support north-south path sharing without a single forwarding Edge.
Question 838
An architect proposes the following step: define and use the applicable uplink profile in transport-node configuration. The context is: Two ESXi transport nodes require consistent uplink mapping and tunneling policy. What is the strongest technical reason for that decision?
- Gateway firewall policies operate at the gateway service boundary and serve a different placement than DFW microsegmentation.
- Uplink profiles capture NIC teaming, transport VLAN, and uplink placement decisions for the prepared node.
- The distributed firewall evaluates relevant flows at the host data plane rather than relying on traffic crossing a physical perimeter.
- Logical redundancy offers limited resilience when all members depend on one physical failure point.
Explanation
Correct Answer
B:Uplink profiles capture NIC teaming, transport VLAN, and uplink placement decisions for the prepared node. This explains the proposed decision in the current uplink profiles situation. The intended outcome is to apply repeatable physical-uplink mapping during NSX preparation, and verification would show: Both nodes show the expected uplink-profile mapping and healthy TEP connectivity.
Incorrect Answers
A:This statement can describe a gateway firewall placement problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to filter traffic at the centralized gateway boundary; here the relevant requirement is to apply repeatable physical-uplink mapping during NSX preparation.
C:This statement can describe a distributed firewall enforcement problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to enforce security near workload virtual interfaces; here the relevant requirement is to apply repeatable physical-uplink mapping during NSX preparation.
D:This statement can describe a failure-domain diversity problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to avoid correlated failures for a business-critical north-south path; here the relevant requirement is to apply repeatable physical-uplink mapping during NSX preparation.
Question 839
An architect proposes the following step: design an IP-routed underlay with TEP reachability and overlay segment membership. The context is: Hosts in two racks use a routed underlay but must join the same logical overlay segment. What is the strongest technical reason for that decision?
- Tier-1 provides application-facing logical routing and a route toward a Tier-0 for external networks.
- Host-level distributed firewalling reduces the need to route every VM flow through an appliance to apply policy.
- Overlay encapsulation carries L2 traffic across the IP underlay, separating tenant switching from fabric VLAN sprawl.
- Edge nodes host centralized service-router functions that cannot be implemented solely by hypervisor distributed forwarding.
Explanation
Correct Answer
C:Overlay encapsulation carries L2 traffic across the IP underlay, separating tenant switching from fabric VLAN sprawl. This explains the proposed decision in the current overlay fabric reachability situation. The intended outcome is to support L2 semantics without extending a large physical VLAN everywhere, and verification would show: Underlay TEP addresses exchange GENEVE packets and guests communicate on the logical segment.
Incorrect Answers
A:This statement can describe a tier-1 workload routing problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to provide workload-segment routing behind an external connectivity tier; here the relevant requirement is to support L2 semantics without extending a large physical VLAN everywhere.
B:This statement can describe a distributed microsegmentation problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to restrict inter-tier traffic without forcing all flows off-host; here the relevant requirement is to support L2 semantics without extending a large physical VLAN everywhere.
D:This statement can describe a edge services problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to place stateful and external-routing services in the right data plane; here the relevant requirement is to support L2 semantics without extending a large physical VLAN everywhere.
Question 840
A reviewer must validate the intended NSX outcome. Situation: Two VMs join a supported stretched overlay segment in separate NSX Federation sites. Which result most directly demonstrates that the team can identify cross-site encapsulated Layer-2 forwarding and its policy controls?
- An underlay capture shows tunnel packets between TEP IP addresses and delivery at the destination vNIC.
- A previously absent VPC public prefix appears in Tier-0 and upstream advertisements.
- After appropriate capacity repair, Edge resource counters and packet loss return within targets.
- Cross-site tunnel captures and VM-to-VM tests confirm correct forwarding between the locations.
Explanation
Correct Answer
D:Cross-site tunnel captures and VM-to-VM tests confirm correct forwarding between the locations. This observation validates the specified federation stretched-segment path outcome. A stretched segment relies on remote TEP transport and applicable distributed policy at each site.
Incorrect Answers
A:This would validate cross-host same-segment packet walk rather than the needed federation stretched-segment path result. The underlay forwards TEP packets while the overlay carries the tenant frame across hosts. For the present case, the evidence must show that the team can identify cross-site encapsulated Layer-2 forwarding and its policy controls.
B:This would validate transit gateway route missing rather than the needed federation stretched-segment path result. VCF 9 VPC routes may depend on the explicit TGW static redistribution class. For the present case, the evidence must show that the team can identify cross-site encapsulated Layer-2 forwarding and its policy controls.
C:This would validate edge resource exhaustion rather than the needed federation stretched-segment path result. A saturated Edge can lose traffic even with a healthy routing control plane. For the present case, the evidence must show that the team can identify cross-site encapsulated Layer-2 forwarding and its policy controls.