VMware 3V0-25.25 Practice Test 10
Question 90
An architect proposes the following step: select supported Edge sizes and resource reservations based on capacity planning. The context is: Several business units will share NAT and VPN services on a new NSX Edge cluster. What is the strongest technical reason for that decision?
- External BGP cannot form until the directly connected dataplane path works.
- Gateway throughput and session capacity depend on the resources available to Edge nodes.
- A VLAN-backed NSX network depends on the underlying tagged L2 connectivity.
- Hypervisor hardware failures can affect transport forwarding even when NSX logical policy is valid.
Explanation
Correct Answer
B:Gateway throughput and session capacity depend on the resources available to Edge nodes. This explains the proposed decision in the current edge capacity selection situation. The intended outcome is to size Edge service nodes for expected stateful networking demand, and verification would show: Stress testing remains within target CPU, memory and service latency headroom.
Incorrect Answers
A:This statement can describe a underlay peer troubleshooting problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to repair the physical uplink addressing or VLAN mismatch before routing configuration; here the relevant requirement is to size Edge service nodes for expected stateful networking demand.
C: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 size Edge service nodes for expected stateful networking demand.
D:This statement can describe a vcenter host dependency problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to correlate NSX transport symptoms with the underlying vSphere host hardware state; here the relevant requirement is to size Edge service nodes for expected stateful networking demand.
Question 91
A reviewer must validate the intended NSX outcome. Situation: A remote branch requires its own egress route while sharing enterprise security controls. Which result most directly demonstrates that the team can combine global policy intent with local gateway configuration?
- Observed egress packets carry the expected translated source and return sessions succeed.
- An ESXi host outage leaves an alternate Edge and uplink path available for the service.
- The branch uses its local external peer while the expected global controls are realized there.
- The Federation health view reports compatible versions and global objects realize successfully.
Explanation
Correct Answer
C:The branch uses its local external peer while the expected global controls are realized there. This observation validates the specified site autonomy versus shared policies outcome. Federation does not require every local routing choice to become a global object.
Incorrect Answers
A:This would validate centralized nat locality rather than the needed site autonomy versus shared policies result. NAT uses a centralized gateway service path when external traffic requires address translation. For the present case, the evidence must show that the team can combine global policy intent with local gateway configuration.
B:This would validate failure-domain diversity rather than the needed site autonomy versus shared policies result. Logical redundancy offers limited resilience when all members depend on one physical failure point. For the present case, the evidence must show that the team can combine global policy intent with local gateway configuration.
D:This would validate version compatibility rather than the needed site autonomy versus shared policies result. Version compatibility matters because Federation control objects and realization depend on supported Manager combinations. For the present case, the evidence must show that the team can combine global policy intent with local gateway configuration.
Question 92
A reviewer must validate the intended NSX outcome. Situation: A gateway handles more concurrent services than initially planned and queueing grows under load. Which result most directly demonstrates that the team can preserve service performance as gateway demand increases?
- The same class of permitted or blocked traffic is observed under the policy in both sites.
- Edge service throughput and CPU measurements improve under a controlled comparable load.
- Each segment lists the intended Tier-1 connection and inter-subnet traffic follows the logical route.
- Post-change service CPU and latency improve under a repeatable gateway workload test.
Explanation
Correct Answer
D:Post-change service CPU and latency improve under a repeatable gateway workload test. This observation validates the specified edge service sizing outcome. Central services depend on finite Edge resources and require sizing for throughput and resilience.
Incorrect Answers
A:This would validate global security objects rather than the needed edge service sizing result. Global groups can match protected resources across sites while a central policy expresses common decisions. For the present case, the evidence must show that the team can preserve service performance as gateway demand increases.
B:This would validate edge fast packet processing rather than the needed edge service sizing result. DPDK-based packet processing reduces generic kernel forwarding overhead for supported Edge paths. For the present case, the evidence must show that the team can preserve service performance as gateway demand increases.
C:This would validate tier-1 workload routing rather than the needed edge service sizing result. Tier-1 provides application-facing logical routing and a route toward a Tier-0 for external networks. For the present case, the evidence must show that the team can preserve service performance as gateway demand increases.
Question 93
A change review examines the following situation: A high availability gateway is realized only on a single Edge despite a redundant cluster. Which practice would most directly undermine the requirement to enforce the expected gateway HA placement on eligible Edge nodes?
- making an Edge cluster redundant on paper without validating gateway service-router realization
- concluding all NSX transport nodes are overloaded based only on internet latency
- powering on an unrelated appliance and counting it as active gateway capacity
- assuming a hypervisor VM snapshot alone is the supported NSX configuration backup process
Explanation
Correct Answer
A:The anti-pattern, making an Edge cluster redundant on paper without validating gateway service-router realization, directly conflicts with the requirement to enforce the expected gateway HA placement on eligible Edge nodes. Correct placement requires sufficient eligible Edge nodes and an appropriate HA configuration. The safer action is to review the gateway HA mode and service-router placement across the cluster.
Incorrect Answers
B:That practice primarily harms the distinct edge capacity indicators activity, in which the goal is to detect bottlenecks on centralized Edge services. Its failure mechanism is less direct for this specific edge ha service placement review. Here the key requirement is to enforce the expected gateway HA placement on eligible Edge nodes.
C:That practice primarily harms the distinct edge scaling lifecycle activity, in which the goal is to scale service resources through the supported Edge preparation workflow. Its failure mechanism is less direct for this specific edge ha service placement review. Here the key requirement is to enforce the expected gateway HA placement on eligible Edge nodes.
D:That practice primarily harms the distinct manager backup schedule activity, in which the goal is to preserve a supported recovery point for the management configuration. Its failure mechanism is less direct for this specific edge ha service placement review. Here the key requirement is to enforce the expected gateway HA placement on eligible Edge nodes.
Question 94
A change review examines the following situation: Only one ESXi transport node shows realization failure after an uplink profile was edited. Which practice would most directly undermine the requirement to find the host-specific transport configuration difference?
- assuming ECMP stripes every consecutive TCP packet round-robin across all interfaces
- deleting every NSX logical segment because one host's uplink mapping differs
- keeping identical transport endpoint IPs because their management addresses differ
- changing all gateway routes without first locating where the NSX path fails
Explanation
Correct Answer
B:The anti-pattern, deleting every NSX logical segment because one host's uplink mapping differs, directly conflicts with the requirement to find the host-specific transport configuration difference. A profile mismatch can break a single node even when Manager-wide logical segments are correct. The safer action is to compare the host's realized transport profile and uplink mapping to a healthy peer.
Incorrect Answers
A:That practice primarily harms the distinct per-flow ecmp behavior activity, in which the goal is to set realistic expectations for multipath balancing. Its failure mechanism is less direct for this specific host profile drift review. Here the key requirement is to find the host-specific transport configuration difference.
C:That practice primarily harms the distinct tep address collision activity, in which the goal is to restore unique tunnel endpoint identity across the fabric. Its failure mechanism is less direct for this specific host profile drift review. Here the key requirement is to find the host-specific transport configuration difference.
D:That practice primarily harms the distinct traceflow path activity, in which the goal is to locate the NSX forwarding or policy decision affecting this flow. Its failure mechanism is less direct for this specific host profile drift review. Here the key requirement is to find the host-specific transport configuration difference.
Question 95
An architect proposes the following step: include the route's network in an allowed External IP Block and matching connection profile. The context is: A Transit Gateway static route is configured but the external connection filters it out before announcement. What is the strongest technical reason for that decision?
- VPC external reachability needs a complete forward and return path across all three tiers.
- The network analytics tool combines flow information and topology useful for diagnosing cross-layer paths.
- Outbound advertisement filters can suppress routes not covered by an approved External IP Block.
- Centralized gateway services depend on eligible Edge nodes rather than distributed routing alone.
Explanation
Correct Answer
C:Outbound advertisement filters can suppress routes not covered by an approved External IP Block. This explains the proposed decision in the current vpc external ip block policy situation. The intended outcome is to permit the intended VPC external network through the provider's outbound advertisement controls, and verification would show: The route appears among permitted outbound networks and upstream route advertisement succeeds.
Incorrect Answers
A:This statement can describe a vpc troubleshooting order problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to isolate VPC routing, advertisement and upstream return-path faults; here the relevant requirement is to permit the intended VPC external network through the provider's outbound advertisement controls.
B:This statement can describe a vcf operations for networks problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to analyze dependencies and network paths with broader topology context; here the relevant requirement is to permit the intended VPC external network through the provider's outbound advertisement controls.
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 permit the intended VPC external network through the provider's outbound advertisement controls.
Question 96
Tenant requests keep consuming more subnets than the infrastructure team budgeted. The engineering team needs to limit tenant network-resource consumption without blocking ordinary self-service. What action best addresses the immediate requirement?
- test the module against a scoped nonproduction environment and inspect the generated API plan
- apply appropriate NSX DFW groups and policy for the segment's workloads
- configure supported Transit Gateway static route redistribution on Tier-0 as required
- set appropriate VPC and Project quotas or limits before onboarding
Explanation
Correct Answer
D:Delegated self-service requires resource governance so one tenant cannot exhaust shared infrastructure. The selected action, set appropriate VPC and Project quotas or limits before onboarding, directly supports the specified goal to limit tenant network-resource consumption without blocking ordinary self-service. A useful confirmation is: Project allocation dashboards and creation tests enforce the configured limit for the tenant.
Incorrect Answers
A:Test the module against a scoped nonproduction environment and inspect the generated API plan would address the separate case of integration change testing, where the objective is to avoid unintended multi-site changes from automation drift. Preflight validation catches wrong paths, permissions, or rule matches before broad production execution. Here the requirement is instead to limit tenant network-resource consumption without blocking ordinary self-service; that step does not directly satisfy it.
B:Apply appropriate NSX DFW groups and policy for the segment's workloads would address the separate case of segment security placement, where the objective is to ensure connecting a VM to a segment does not bypass microsegmentation policy. Logical network membership alone is not a substitute for workload-level access control. Here the requirement is instead to limit tenant network-resource consumption without blocking ordinary self-service; that step does not directly satisfy it.
C:Configure supported Transit Gateway static route redistribution on Tier-0 as required would address the separate case of public subnet external reachability, where the objective is to advertise the public VPC network through the centralized external path. VPC Transit Gateway routes are not automatically included in every Tier-0 external protocol advertisement. Here the requirement is instead to limit tenant network-resource consumption without blocking ordinary self-service; that step does not directly satisfy it.
Question 97
A change review examines the following situation: A protected server subnet must reach a partner that permits only one public source address. Which practice would most directly undermine the requirement to present the approved source address on outbound sessions?
- adding an inbound DNAT rule when the problem is the outbound source identity
- waiting for DHCP broadcast packets to route automatically across a Tier-0
- assuming private source addresses are automatically reachable from arbitrary internet routers
- assuming deployment of the Edge VM alone creates all service-router capacity
Explanation
Correct Answer
A:The anti-pattern, adding an inbound DNAT rule when the problem is the outbound source identity, directly conflicts with the requirement to present the approved source address on outbound sessions. SNAT rewrites matching outbound source addresses for a defined network path. The safer action is to configure an appropriate SNAT rule on the service gateway.
Incorrect Answers
B:That practice primarily harms the distinct dhcp relay boundary activity, in which the goal is to forward guest DHCP requests to the authorized remote server. Its failure mechanism is less direct for this specific source nat on egress review. Here the key requirement is to present the approved source address on outbound sessions.
C:That practice primarily harms the distinct vpc egress nat design activity, in which the goal is to supply a supported outbound translation path for the tenant. Its failure mechanism is less direct for this specific source nat on egress review. Here the key requirement is to present the approved source address on outbound sessions.
D:That practice primarily harms the distinct edge transport preparation activity, in which the goal is to complete the NSX transport-node realization of the Edge. Its failure mechanism is less direct for this specific source nat on egress review. Here the key requirement is to present the approved source address on outbound sessions.
Question 98
High-volume external traffic must use several equal-cost next hops rather than a single saturated gateway path. The engineering team needs to distribute eligible north-south flows across redundant paths. What action best addresses the immediate requirement?
- realize a VLAN-backed NSX segment on eligible transport nodes
- configure supported Tier-0 active-active ECMP with matching upstream routing
- design NSX Federation with a Global Manager and participating Local Managers
- review uplink-profile teaming and physical-switch connectivity for the TEP path
Explanation
Correct Answer
B:ECMP selects among equal-cost routes, typically per flow, improving aggregate path capacity and redundancy. The selected action, configure supported Tier-0 active-active ECMP with matching upstream routing, directly supports the specified goal to distribute eligible north-south flows across redundant paths. A useful confirmation is: Observed independent flows use multiple live next hops while each flow stays consistent with its path selection.
Incorrect Answers
A:Realize a VLAN-backed NSX segment on eligible transport nodes would address the separate case of overlay versus vlan, where the objective is to choose the correct backing for an externally shared Layer-2 network. VLAN-backed segments connect to the designated physical VLAN, whereas overlay segments depend on tunnel endpoints. Here the requirement is instead to distribute eligible north-south flows across redundant paths; that step does not directly satisfy it.
C:Design NSX Federation with a Global Manager and participating Local Managers would address the separate case of federation policy scope, where the objective is to coordinate security intent across NSX sites. Global Manager can express global intent while Local Managers realize and operate site-specific NSX environments. Here the requirement is instead to distribute eligible north-south flows across redundant paths; that step does not directly satisfy it.
D: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 distribute eligible north-south flows across redundant paths; that step does not directly satisfy it.
Question 99
Several API calls time out and NSX Manager cluster service alarms appeared after a maintenance reboot. The engineering team needs to restore a healthy management and policy service plane. What action best addresses the immediate requirement?
- spread redundant Edge nodes across appropriate compute and network failure domains
- capture the test flow at suitable source and Edge interfaces
- inspect Manager node membership, service health and connectivity before restarting individual components
- test TEP addresses, VLAN, underlay routing and host transport-node health
Explanation
Correct Answer
C:Management service degradation is separate from existing data-plane forwarding and requires cluster-focused diagnosis. The selected action, inspect Manager node membership, service health and connectivity before restarting individual components, directly supports the specified goal to restore a healthy management and policy service plane. A useful confirmation is: Manager cluster health and API response stabilize after the underlying service fault is corrected.
Incorrect Answers
A:Spread redundant Edge nodes across appropriate compute and network failure domains would address the separate case of ha fault-domain design, where the objective is to maintain gateway availability after a host hardware failure. Logical HA cannot survive the failure of a single shared physical dependency. Here the requirement is instead to restore a healthy management and policy service plane; that step does not directly satisfy it.
B:Capture the test flow at suitable source and Edge interfaces would address the separate case of packet capture evidence, where the objective is to observe actual dataplane packet headers at the relevant boundaries. A packet capture reveals emitted packets, translated fields and return traffic directly. Here the requirement is instead to restore a healthy management and policy service plane; that step does not directly satisfy it.
D:Test TEP addresses, VLAN, underlay routing and host transport-node health would address the separate case of tep reachability failure, where the objective is to restore host-to-host tunnel endpoint connectivity. Overlay connectivity relies on reachable TEP dataplane paths separate from the ESXi management interface. Here the requirement is instead to restore a healthy management and policy service plane; that step does not directly satisfy it.
Question 100
A change review examines the following situation: A central manager outage threatens the ability to change global NSX policies for several locations. Which practice would most directly undermine the requirement to recover centralized policy management without erasing local state?
- overwriting all site-specific uplinks with one global egress definition
- using a new overlay VNI while expecting direct membership in a physical VLAN
- forcing all local inter-subnet traffic through an Edge appliance
- relying only on a single local site snapshot as a complete Global Manager recovery plan
Explanation
Correct Answer
D:The anti-pattern, relying only on a single local site snapshot as a complete Global Manager recovery plan, directly conflicts with the requirement to recover centralized policy management without erasing local state. Global Manager configuration and recovery artifacts are required to restore global policy coordination after a failure. The safer action is to maintain tested Global Manager backup and supported recovery procedures.
Incorrect Answers
A:That practice primarily harms the distinct site autonomy versus shared policies activity, in which the goal is to combine global policy intent with local gateway configuration. Its failure mechanism is less direct for this specific federation recovery planning review. Here the key requirement is to recover centralized policy management without erasing local state.
B:That practice primarily harms the distinct overlay versus vlan activity, in which the goal is to choose the correct backing for an externally shared Layer-2 network. Its failure mechanism is less direct for this specific federation recovery planning review. Here the key requirement is to recover centralized policy management without erasing local state.
C:That practice primarily harms the distinct distributed forwarding activity, in which the goal is to avoid an unnecessary centralized hop for ordinary east-west routing. Its failure mechanism is less direct for this specific federation recovery planning review. Here the key requirement is to recover centralized policy management without erasing local state.