VMware 3V0-25.25 Practice Test 75
Question 740
Two ESXi transport nodes require consistent uplink mapping and tunneling policy. The engineering team needs to apply repeatable physical-uplink mapping during NSX preparation. What action best addresses the immediate requirement?
- prepare the cluster as NSX transport nodes with compatible switching and transport-zone assignment
- use supported Edge dataplane acceleration such as DPDK where the platform provides it
- keep the eligible east-west path on distributed logical routing
- define and use the applicable uplink profile in transport-node configuration
Explanation
Correct Answer
D:Uplink profiles capture NIC teaming, transport VLAN, and uplink placement decisions for the prepared node. The selected action, define and use the applicable uplink profile in transport-node configuration, directly supports the specified goal to apply repeatable physical-uplink mapping during NSX preparation. A useful confirmation is: Both nodes show the expected uplink-profile mapping and healthy TEP connectivity.
Incorrect Answers
A: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 apply repeatable physical-uplink mapping during NSX preparation; that step does not directly satisfy it.
B:Use supported Edge dataplane acceleration such as DPDK where the platform provides it would address the separate case of edge fast packet processing, where the objective is to use an optimized software data path on suitably sized Edge resources. DPDK-based packet processing reduces generic kernel forwarding overhead for supported Edge paths. Here the requirement is instead to apply repeatable physical-uplink mapping during NSX preparation; that step does not directly satisfy it.
C: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 apply repeatable physical-uplink mapping during NSX preparation; that step does not directly satisfy it.
Question 741
A reviewer must validate the intended NSX outcome. Situation: Federated sites should share a baseline but one site's gateway rules were changed manually. Which result most directly demonstrates that the team can detect and review unintended divergence from approved fleet networking configuration?
- Change reports identify the site, rule and deviation from the approved baseline.
- A traced local workload flow exits through the intended local service and uplink path.
- A restore rehearsal finds the correct generation and recovers the intended instance configuration.
- Architecture diagrams show management interactions independently from tunnel, routing, and service flows.
Explanation
Correct Answer
A:Change reports identify the site, rule and deviation from the approved baseline. This observation validates the specified policy drift monitoring outcome. Detecting drift allows operations to separate deliberate local exceptions from accidental changes.
Incorrect Answers
B:This would validate edge locality across sites rather than the needed policy drift monitoring result. Local egress can reduce latency and cross-site dependency if routing and policy permit it. For the present case, the evidence must show that the team can detect and review unintended divergence from approved fleet networking configuration.
C:This would validate backup consistency rather than the needed policy drift monitoring result. Backups must be associated with the correct management instance and verified for recovery usefulness. For the present case, the evidence must show that the team can detect and review unintended divergence from approved fleet networking configuration.
D:This would validate control and data plane separation rather than the needed policy drift monitoring result. NSX management and policy control govern desired state, while transport nodes and Edge gateways process actual packets. For the present case, the evidence must show that the team can detect and review unintended divergence from approved fleet networking configuration.
Question 742
A change review examines the following situation: A finance subnet may initiate connections to an upstream service, but unsolicited inbound sessions must be denied. Which practice would most directly undermine the requirement to permit only authorized new sessions while retaining state-aware replies?
- counting a green backup-job timestamp as proof that disaster recovery works
- using a broad allow-any rule before the sensitive finance subnet policies
- treating every private subnet as a publicly routable external prefix
- assuming a static route alone encrypts traffic over the public network
Explanation
Correct Answer
B:The anti-pattern, using a broad allow-any rule before the sensitive finance subnet policies, directly conflicts with the requirement to permit only authorized new sessions while retaining state-aware replies. Stateful inspection distinguishes traffic belonging to established sessions from unauthorized new attempts. The safer action is to create appropriately ordered stateful gateway firewall rules.
Incorrect Answers
A:That practice primarily harms the distinct restore rehearsal activity, in which the goal is to prove management recovery before an actual outage. Its failure mechanism is less direct for this specific stateful gateway policy review. Here the key requirement is to permit only authorized new sessions while retaining state-aware replies.
C:That practice primarily harms the distinct private vpc subnet isolation activity, in which the goal is to apply the approved private subnet and connectivity design. Its failure mechanism is less direct for this specific stateful gateway policy review. Here the key requirement is to permit only authorized new sessions while retaining state-aware replies.
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 stateful gateway policy review. Here the key requirement is to permit only authorized new sessions while retaining state-aware replies.
Question 743
Local east-west application traffic repeatedly crosses a congested Edge even when distributed routing is supported. The engineering team needs to reduce centralized transit for traffic that can route locally. What action best addresses the immediate requirement?
- review uplink-profile teaming and physical-switch connectivity for the TEP path
- standardize encrypted backup destinations and periodically test instance-specific restores
- keep eligible east-west routing in the distributed logical router
- connect a Tier-0 service router over appropriate VLAN uplinks to physical routers
Explanation
Correct Answer
C:Distributed routing processes local/interhost flows in transport nodes, reducing unnecessary Edge service load. The selected action, keep eligible east-west routing in the distributed logical router, directly supports the specified goal to reduce centralized transit for traffic that can route locally. A useful confirmation is: Trace evidence shows the application flow avoids the Edge while routing remains correct.
Incorrect Answers
A:Review uplink-profile teaming and physical-switch connectivity for the TEP path would address the separate case of uplink path diversity, where the objective is to use redundant suitable transport uplinks according to fabric and policy constraints. Teaming and path configuration determine which physical links can carry transport traffic. Here the requirement is instead to reduce centralized transit for traffic that can route locally; that step does not directly satisfy it.
B:Standardize encrypted backup destinations and periodically test instance-specific restores would address the separate case of backup consistency, where the objective is to recover each fleet networking control plane from documented backups. Backups must be associated with the correct management instance and verified for recovery usefulness. Here the requirement is instead to reduce centralized transit for traffic that can route locally; that step does not directly satisfy it.
D:Connect a Tier-0 service router over appropriate VLAN uplinks to physical routers would address the separate case of external uplink routing, where the objective is to design a clear north-south routing demarcation. The Tier-0 external interface provides the route exchange boundary and accommodates physical-network reachability. Here the requirement is instead to reduce centralized transit for traffic that can route locally; that step does not directly satisfy it.
Question 744
A reviewer must validate the intended NSX outcome. Situation: Two transport nodes intermittently lose encapsulated packet delivery after receiving the same TEP address. Which result most directly demonstrates that the team can restore unique tunnel endpoint identity across the fabric?
- TEP probes and tunnel health pass after the underlay mismatch is corrected.
- A supported deployment preserves session behavior while using the chosen active-active service mode.
- The selected route entries show multiple next hops with eligible comparable costs.
- Endpoint inventory shows unique IPs and stable host-to-host tunnel traffic.
Explanation
Correct Answer
D:Endpoint inventory shows unique IPs and stable host-to-host tunnel traffic. This observation validates the specified tep address collision outcome. A duplicate transport endpoint IP causes ambiguous underlay neighbor or routing behavior.
Incorrect Answers
A:This would validate tep reachability failure rather than the needed tep address collision result. Overlay connectivity relies on reachable TEP dataplane paths separate from the ESXi management interface. For the present case, the evidence must show that the team can restore unique tunnel endpoint identity across the fabric.
B:This would validate stateful active-active support rather than the needed tep address collision result. Modern NSX supports stateful services on eligible active-active Tier-0 designs, subject to documented feature limitations. For the present case, the evidence must show that the team can restore unique tunnel endpoint identity across the fabric.
C:This would validate ecmp path eligibility rather than the needed tep address collision result. Only eligible equal-cost next hops enter the relevant ECMP forwarding set under the chosen routing rules. For the present case, the evidence must show that the team can restore unique tunnel endpoint identity across the fabric.
Question 745
An architect proposes the following step: review the gateway HA mode and service-router placement across the cluster. The context is: A high availability gateway is realized only on a single Edge despite a redundant cluster. What is the strongest technical reason for that decision?
- Correct placement requires sufficient eligible Edge nodes and an appropriate HA configuration.
- A VLAN-backed NSX network depends on the underlying tagged L2 connectivity.
- Provisioning status is only a prerequisite; production readiness requires packet-flow validation.
- A DNS forwarder can select named zone resolvers instead of sending every query to one list.
Explanation
Correct Answer
A:Correct placement requires sufficient eligible Edge nodes and an appropriate HA configuration. This explains the proposed decision in the current edge ha service placement situation. The intended outcome is to enforce the expected gateway HA placement on eligible Edge nodes, and verification would show: Gateway service-router status shows the desired primary/standby or active members.
Incorrect Answers
B:This statement can describe a physical vlan availability problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to make the physical fabric carry the VLAN used by the NSX segment; here the relevant requirement is to enforce the expected gateway HA placement on eligible Edge nodes.
C:This statement can describe a edge operational readiness problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to confirm Edge cluster readiness under real traffic and a member outage; here the relevant requirement is to enforce the expected gateway HA placement on eligible Edge nodes.
D:This statement can describe a dns forwarder domain split problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to route DNS queries to the appropriate upstream DNS authority; here the relevant requirement is to enforce the expected gateway HA placement on eligible Edge nodes.
Question 746
An architect proposes the following step: use VCF Operations for Networks path and flow analysis. The context is: An application route crosses both overlay NSX components and physical leaf switches; support needs one end-to-end topology view. What is the strongest technical reason for that decision?
- Retained logs allow investigators to sequence transient faults after live status has recovered.
- Cross-layer path analysis helps locate gaps outside a single NSX Manager inventory.
- Management service degradation is separate from existing data-plane forwarding and requires cluster-focused diagnosis.
- An Edge can reach physical peers through uplinks while its separate overlay tunnel interfaces are misconfigured.
Explanation
Correct Answer
B:Cross-layer path analysis helps locate gaps outside a single NSX Manager inventory. This explains the proposed decision in the current vcf operations for networks path situation. The intended outcome is to correlate virtual and physical network dependencies for the application, and verification would show: The path view identifies the workload, overlay path, physical hops and affected links.
Incorrect Answers
A:This statement can describe a central log correlation problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to reconstruct time-stamped NSX events after the fact; here the relevant requirement is to correlate virtual and physical network dependencies for the application.
C:This statement can describe a manager cluster unhealthy problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to restore a healthy management and policy service plane; here the relevant requirement is to correlate virtual and physical network dependencies for the application.
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 correlate virtual and physical network dependencies for the application.
Question 747
An administrator needs firewall controls specifically for traffic traversing a Tier-0 external gateway. The engineering team needs to filter traffic at the centralized gateway boundary. What action best addresses the immediate requirement?
- keep the eligible east-west path on distributed logical routing
- plan site-specific Tier-0/Edge paths and validate routing preferences
- use NSX gateway firewall policy on the relevant service gateway
- compare intended policy and realized configuration across locations
Explanation
Correct Answer
C:Gateway firewall policies operate at the gateway service boundary and serve a different placement than DFW microsegmentation. The selected action, use NSX gateway firewall policy on the relevant service gateway, directly supports the specified goal to filter traffic at the centralized gateway boundary. A useful confirmation is: External flow tests generate gateway-rule hits and matched traffic is allowed or denied as designed.
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 filter traffic at the centralized gateway boundary; that step does not directly satisfy it.
B:Plan site-specific Tier-0/Edge paths and validate routing preferences would address the separate case of cross-site traffic steering, where the objective is to design predictable local north-south egress by site. A stretched network does not automatically determine the best egress; gateway placement and route preferences control it. Here the requirement is instead to filter traffic at the centralized gateway boundary; that step does not directly satisfy it.
D: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 filter traffic at the centralized gateway boundary; that step does not directly satisfy it.
Question 748
An architect proposes the following step: scope VPC roles so External Connection profiles remain with administrators. The context is: A developer should manage application subnets but not edit provider External Connections. What is the strongest technical reason for that decision?
- The Tier-1 distributed router supplies inter-segment forwarding; service and security rules still control success.
- A VLAN-backed NSX network depends on the underlying tagged L2 connectivity.
- NSX VPC enables scoped self-service networking with provider-defined connectivity and constraints.
- Provider connectivity objects govern shared external routing and must not become uncontrolled tenant settings.
Explanation
Correct Answer
D:Provider connectivity objects govern shared external routing and must not become uncontrolled tenant settings. This explains the proposed decision in the current vpc delegated permissions situation. The intended outcome is to separate tenant self-service rights from provider-owned connectivity settings, and verification would show: The developer can add approved subnets but cannot alter the shared external connection profile.
Incorrect Answers
A:This statement can describe a inter-segment default routing problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to route eligible east-west traffic locally using the logical router; here the relevant requirement is to separate tenant self-service rights from provider-owned connectivity settings.
B:This statement can describe a physical vlan availability problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to make the physical fabric carry the VLAN used by the NSX segment; here the relevant requirement is to separate tenant self-service rights from provider-owned connectivity settings.
C:This statement can describe a project-scoped vpc creation problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to provide delegated workload networking within defined tenant limits; here the relevant requirement is to separate tenant self-service rights from provider-owned connectivity settings.
Question 749
An on-premises service receives a packet from an NSX workload but sends replies toward a default router lacking the return subnet. The engineering team needs to complete external return routing for the workload network. What action best addresses the immediate requirement?
- advertise or install the correct NSX workload prefix in the upstream return path
- trace outbound gateway SNAT and supported reverse translation on the returning session
- include the relevant connected segment source in Tier-0 route redistribution and export policy
- review Tier-0 BGP neighbor summary and advertised/received route tables
Explanation
Correct Answer
A:Bidirectional IP connectivity depends on both forward and return routes being valid. The selected action, advertise or install the correct NSX workload prefix in the upstream return path, directly supports the specified goal to complete external return routing for the workload network. A useful confirmation is: The physical peer has a usable route back to the workload and session return packets arrive.
Incorrect Answers
B:Trace outbound gateway SNAT and supported reverse translation on the returning session would address the separate case of nat egress and return walk, where the objective is to explain the stateful source and return address transformations. SNAT maps source addresses outbound, and the corresponding state restores the internal destination on replies. Here the requirement is instead to complete external return routing for the workload network; that step does not directly satisfy it.
C:Include the relevant connected segment source in Tier-0 route redistribution and export policy would address the separate case of connected route not advertised, where the objective is to export the eligible connected segment route to the external routing protocol. NSX local routes must be deliberately selected for redistribution before BGP advertises them. Here the requirement is instead to complete external return routing for the workload network; that step does not directly satisfy it.
D:Review Tier-0 BGP neighbor summary and advertised/received route tables would address the separate case of bgp diagnostic view, where the objective is to inspect the control-plane state and routes of the external peer. BGP state and prefix advertisements expose session or policy faults not visible in an ICMP test. Here the requirement is instead to complete external return routing for the workload network; that step does not directly satisfy it.
Question 750
A high availability gateway is realized only on a single Edge despite a redundant cluster. The engineering team needs to enforce the expected gateway HA placement on eligible Edge nodes. What action best addresses the immediate requirement?
- configure a supported IPsec VPN service with matching proposals and routes
- review the gateway HA mode and service-router placement across the cluster
- add the prepared Edge nodes to an Edge cluster used for gateway allocation
- inventory and decommission Project-owned resources in dependency order
Explanation
Correct Answer
B:Correct placement requires sufficient eligible Edge nodes and an appropriate HA configuration. The selected action, review the gateway HA mode and service-router placement across the cluster, directly supports the specified goal to enforce the expected gateway HA placement on eligible Edge nodes. A useful confirmation is: Gateway service-router status shows the desired primary/standby or active members.
Incorrect Answers
A: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 enforce the expected gateway HA placement on eligible Edge nodes; that step does not directly satisfy it.
C:Add the prepared Edge nodes to an Edge cluster used for gateway allocation would address the separate case of edge cluster membership, where the objective is to make supported Edge capacity available to gateway service routers. Service routers use a selected Edge cluster for their centralized functions. Here the requirement is instead to enforce the expected gateway HA placement on eligible Edge nodes; that step does not directly satisfy it.
D:Inventory and decommission Project-owned resources in dependency order would address the separate case of tenant lifecycle cleanup, where the objective is to remove the retired tenant without affecting shared provider infrastructure. Tenant offboarding should clean scoped objects while leaving shared routing and provider services intact. Here the requirement is instead to enforce the expected gateway HA placement on eligible Edge nodes; that step does not directly satisfy it.