VMware 3V0-25.25 Practice Test 9
Question 80
A reviewer must validate the intended NSX outcome. Situation: Concurrent infrastructure updates at linked sites could remove both redundant network paths. Which result most directly demonstrates that the team can preserve available connectivity during cross-instance maintenance?
- Before onboarding, the address inventory shows unique Manager and DNS mappings.
- A traced local workload flow exits through the intended local service and uplink path.
- Captures on underlay-facing uplinks show tunnel traffic between the transport-node endpoint addresses.
- Maintenance simulations and approvals show at least one service path remains healthy.
Explanation
Correct Answer
D:Maintenance simulations and approvals show at least one service path remains healthy. This observation validates the specified change-window coordination outcome. Fleet-level change governance avoids simultaneous loss of redundant links or management reachability.
Incorrect Answers
A:This would validate management address governance rather than the needed change-window coordination result. Address governance prevents collisions and improves connectivity planning for cross-instance management. For the present case, the evidence must show that the team can preserve available connectivity during cross-instance maintenance.
B:This would validate edge locality across sites rather than the needed change-window coordination 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 preserve available connectivity during cross-instance maintenance.
C:This would validate geneve transport rather than the needed change-window coordination result. GENEVE encapsulates overlay frames between transport-node TEPs so the underlay need not learn each tenant MAC address. For the present case, the evidence must show that the team can preserve available connectivity during cross-instance maintenance.
Question 81
A reviewer must validate the intended NSX outcome. Situation: An NSX VLAN segment exists, but the leaf switch does not permit its VLAN on the uplink trunk. Which result most directly demonstrates that the team can make the physical fabric carry the VLAN used by the NSX segment?
- The physical switch sees frames with the intended VLAN and target hosts receive them.
- The firewall and VM exchange ARP/neighbor traffic on the agreed VLAN.
- The physical BGP peer learns the VPC public network after the correct redistribution source is enabled.
- Connection and registration tests succeed in both required directions without unexpected address translation.
Explanation
Correct Answer
A:The physical switch sees frames with the intended VLAN and target hosts receive them. This observation validates the specified physical vlan availability outcome. A VLAN-backed NSX network depends on the underlying tagged L2 connectivity.
Incorrect Answers
B:This would validate vlan segment creation rather than the needed physical vlan availability 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 make the physical fabric carry the VLAN used by the NSX segment.
C:This would validate public subnet external reachability rather than the needed physical vlan availability result. VPC Transit Gateway routes are not automatically included in every Tier-0 external protocol advertisement. For the present case, the evidence must show that the team can make the physical fabric carry the VLAN used by the NSX segment.
D:This would validate federation control-path reachability rather than the needed physical vlan availability result. Control-plane enrollment needs working transport and authentication, not just name resolution. For the present case, the evidence must show that the team can make the physical fabric carry the VLAN used by the NSX segment.
Question 82
A change review examines the following situation: A host transport-node update is proposed that may be incompatible with current Manager and Edge builds. Which practice would most directly undermine the requirement to keep NSX and VCF component releases in supported combinations?
- overwriting all differences automatically without understanding emergency maintenance intent
- upgrading only the host dataplane to the newest build without checking manager compatibility
- changing BGP route redistribution while the peer's interface is still unreachable
- increasing only application VM MTU while leaving TEP-path encapsulation constrained
Explanation
Correct Answer
B:The anti-pattern, upgrading only the host dataplane to the newest build without checking manager compatibility, directly conflicts with the requirement to keep NSX and VCF component releases in supported combinations. Mixed versions can be supported only within documented lifecycle boundaries. The safer action is to run current compatibility and lifecycle prechecks before upgrading transport nodes.
Incorrect Answers
A:That practice primarily harms the distinct operational drift reconciliation activity, in which the goal is to identify approved exceptions and correct unintended drift. Its failure mechanism is less direct for this specific upgrade compatibility precheck review. Here the key requirement is to keep NSX and VCF component releases in supported combinations.
C:That practice primarily harms the distinct underlay peer troubleshooting activity, in which the goal is to repair the physical uplink addressing or VLAN mismatch before routing configuration. Its failure mechanism is less direct for this specific upgrade compatibility precheck review. Here the key requirement is to keep NSX and VCF component releases in supported combinations.
D:That practice primarily harms the distinct tunnel encapsulation test activity, in which the goal is to ensure transport-node configuration matches physical MTU capacity. Its failure mechanism is less direct for this specific upgrade compatibility precheck review. Here the key requirement is to keep NSX and VCF component releases in supported combinations.
Question 83
A reviewer must validate the intended NSX outcome. Situation: A Tier-1 performs centralized stateful services, but the service depends on a single Edge node. Which result most directly demonstrates that the team can retain stateful gateway capability through an eligible Edge failure?
- Validation succeeds when the VRF parent uses a supported Tier-0 HA mode.
- Stress testing remains within target CPU, memory and service latency headroom.
- After one Edge failure, service connectivity recovers according to the supported HA design.
- Internal domain queries reach corporate DNS; unrelated domains reach the default resolvers.
Explanation
Correct Answer
C:After one Edge failure, service connectivity recovers according to the supported HA design. This observation validates the specified service-router fault tolerance outcome. Stateful service availability requires healthy centralized service placement and a verified recovery path.
Incorrect Answers
A:This would validate tier-0 stateful ha constraint rather than the needed service-router fault tolerance result. Broadcom documents that a VRF gateway is not supported on an active-active stateful parent Tier-0. For the present case, the evidence must show that the team can retain stateful gateway capability through an eligible Edge failure.
B:This would validate edge capacity selection rather than the needed service-router fault tolerance result. Gateway throughput and session capacity depend on the resources available to Edge nodes. For the present case, the evidence must show that the team can retain stateful gateway capability through an eligible Edge failure.
D:This would validate dns forwarder domain split rather than the needed service-router fault tolerance result. A DNS forwarder can select named zone resolvers instead of sending every query to one list. For the present case, the evidence must show that the team can retain stateful gateway capability through an eligible Edge failure.
Question 84
An architect proposes the following step: maintain tested Global Manager backup and supported recovery procedures. The context is: A central manager outage threatens the ability to change global NSX policies for several locations. What is the strongest technical reason for that decision?
- Stateful services require consistent flow-state processing; not every HA and ECMP combination provides that without specific support.
- Federation Manager registration depends on supported and stable control-plane communication between sites.
- Supported lifecycle ordering and interop matrices reduce control-plane and host-version conflicts.
- Global Manager configuration and recovery artifacts are required to restore global policy coordination after a failure.
Explanation
Correct Answer
D:Global Manager configuration and recovery artifacts are required to restore global policy coordination after a failure. This explains the proposed decision in the current federation recovery planning situation. The intended outcome is to recover centralized policy management without erasing local state, and verification would show: A restore exercise recovers global policy objects and reconnects participating Local Managers.
Incorrect Answers
A:This statement can describe a stateful service symmetry problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to maintain coherent flow state as external traffic enters and exits; here the relevant requirement is to recover centralized policy management without erasing local state.
B:This statement can describe a global-local management communication problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to establish supported manager-to-manager control connectivity; here the relevant requirement is to recover centralized policy management without erasing local state.
C:This statement can describe a fleet lifecycle sequencing problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to avoid breaking supported component interoperability during maintenance; here the relevant requirement is to recover centralized policy management without erasing local state.
Question 85
A change review examines the following situation: A fleet operator needs trend data across separate NSX environments without replacing each local manager. Which practice would most directly undermine the requirement to aggregate monitoring while retaining local control-plane ownership?
- merging all site Manager credentials into an unaudited shared administrator login
- placing the only forwarding data plane on the Global Manager virtual machines
- upgrading all NSX Managers independently without considering VCF lifecycle compatibility
- relying only on a single local site snapshot as a complete Global Manager recovery plan
Explanation
Correct Answer
A:The anti-pattern, merging all site Manager credentials into an unaudited shared administrator login, directly conflicts with the requirement to aggregate monitoring while retaining local control-plane ownership. Fleet-wide observability can correlate health and capacity without turning local NSX management into a packet forwarding tier. The safer action is to integrate appropriate VCF Operations and networking monitoring views across the fleet.
Incorrect Answers
B:That practice primarily harms the distinct local survivability activity, in which the goal is to keep site data-plane operations resilient to central management interruption. Its failure mechanism is less direct for this specific central visibility across instances review. Here the key requirement is to aggregate monitoring while retaining local control-plane ownership.
C:That practice primarily harms the distinct fleet lifecycle sequencing activity, in which the goal is to avoid breaking supported component interoperability during maintenance. Its failure mechanism is less direct for this specific central visibility across instances review. Here the key requirement is to aggregate monitoring while retaining local control-plane ownership.
D:That practice primarily harms the distinct federation recovery planning activity, in which the goal is to recover centralized policy management without erasing local state. Its failure mechanism is less direct for this specific central visibility across instances review. Here the key requirement is to aggregate monitoring while retaining local control-plane ownership.
Question 86
A reviewer must validate the intended NSX outcome. Situation: A network architecture team administers all sites, but application teams should edit only their own tenant resources. Which result most directly demonstrates that the team can keep fleet governance separate from tenant self-service?
- Underlay tunnel health stays green while prohibited application flows are blocked by DFW policy.
- An application user can modify only assigned project resources and not unrelated fleet gateways.
- Remote tunnel endpoints are reachable and cross-site encapsulated frames traverse the intersite network.
- Change reports identify the site, rule and deviation from the approved baseline.
Explanation
Correct Answer
B:An application user can modify only assigned project resources and not unrelated fleet gateways. This observation validates the specified role boundaries across teams outcome. Scoped privileges let platform teams maintain common infrastructure without giving tenants global access.
Incorrect Answers
A:This would validate underlay versus overlay security rather than the needed role boundaries across teams result. TEP reachability enables overlay transport; it does not itself authorize guest-to-guest connections. For the present case, the evidence must show that the team can keep fleet governance separate from tenant self-service.
C:This would validate remote tunnel reachability rather than the needed role boundaries across teams result. Stretched-segment traffic requires a functional intersite tunnel data path; local same-site forwarding alone is insufficient. For the present case, the evidence must show that the team can keep fleet governance separate from tenant self-service.
D:This would validate policy drift monitoring rather than the needed role boundaries across teams result. Detecting drift allows operations to separate deliberate local exceptions from accidental changes. For the present case, the evidence must show that the team can keep fleet governance separate from tenant self-service.
Question 87
An architect proposes the following step: validate reachable DNS and synchronized time for every Manager and associated VCF component. The context is: New NSX instances report authentication and certificate inconsistencies after first deployment. What is the strongest technical reason for that decision?
- Tier-0 gateways connect logical routing to the upstream network and can exchange routes with physical routers.
- Supported lifecycle ordering and interop matrices reduce control-plane and host-version conflicts.
- Reliable name resolution and time synchronization support certificates, logs and service interoperability.
- A comparable baseline distinguishes network forwarding delay from application processing or storage latency.
Explanation
Correct Answer
C:Reliable name resolution and time synchronization support certificates, logs and service interoperability. This explains the proposed decision in the current ntp and dns prerequisites situation. The intended outcome is to establish consistent fundamental management services, and verification would show: Health checks show resolvable FQDNs and synchronized clocks across the fleet.
Incorrect Answers
A:This statement can describe a tier-0 north-south role problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to establish a routing boundary between virtualized workloads and physical fabric; here the relevant requirement is to establish consistent fundamental management services.
B:This statement can describe a fleet lifecycle sequencing problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to avoid breaking supported component interoperability during maintenance; here the relevant requirement is to establish consistent fundamental management services.
D:This statement can describe a latency baseline problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to identify whether networking datapath is the actual bottleneck; here the relevant requirement is to establish consistent fundamental management services.
Question 88
A reviewer must validate the intended NSX outcome. Situation: An application team needs its own managed virtual network without administrator-level access to all NSX gateways. Which result most directly demonstrates that the team can provide delegated workload networking within defined tenant limits?
- Both tenants reach the approved DNS service but cannot initiate other cross-tenant sessions.
- Project allocation dashboards and creation tests enforce the configured limit for the tenant.
- Internal domain queries reach corporate DNS; unrelated domains reach the default resolvers.
- The team can create VPC subnets inside its project but cannot change unrelated infrastructure gateways.
Explanation
Correct Answer
D:The team can create VPC subnets inside its project but cannot change unrelated infrastructure gateways. This observation validates the specified project-scoped vpc creation outcome. NSX VPC enables scoped self-service networking with provider-defined connectivity and constraints.
Incorrect Answers
A:This would validate provider shared services rather than the needed project-scoped vpc creation result. Shared services can be reachable through controlled routing without flattening tenant security boundaries. For the present case, the evidence must show that the team can provide delegated workload networking within defined tenant limits.
B:This would validate provider vpc network limits rather than the needed project-scoped vpc creation result. Delegated self-service requires resource governance so one tenant cannot exhaust shared infrastructure. For the present case, the evidence must show that the team can provide delegated workload networking within defined tenant limits.
C:This would validate dns forwarder domain split rather than the needed project-scoped vpc creation result. A DNS forwarder can select named zone resolvers instead of sending every query to one list. For the present case, the evidence must show that the team can provide delegated workload networking within defined tenant limits.
Question 89
An architect proposes the following step: walk segment to Tier-1 distributed routing, required service-router hops, Tier-0 external interface and fabric. The context is: A workload connects to a corporate application through a Tier-1, Tier-0 and external BGP-linked uplink. What is the strongest technical reason for that decision?
- North-south paths cross the logical routing tiers and any centralized services before leaving via a physical uplink.
- A stateful HA service may direct a response to the Edge that owns its connection state.
- The Tier-0 hierarchy provides an interconnection path when distinct Tier-1 domains exchange permitted routes.
- A stable per-flow hash helps avoid reordering but one heavy flow may remain on one path.
Explanation
Correct Answer
A:North-south paths cross the logical routing tiers and any centralized services before leaving via a physical uplink. This explains the proposed decision in the current north-south packet walk situation. The intended outcome is to describe the sequence from tenant segment to physical network, and verification would show: The packet trace shows the configured gateway and external route sequence to the corporate endpoint.
Incorrect Answers
B:This statement can describe a stateful return-path ownership problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to preserve stateful flow correctness under multiple Edge routes; here the relevant requirement is to describe the sequence from tenant segment to physical network.
C:This statement can describe a two tier-1 gateways through tier-0 problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to describe the route boundary between independent application gateway contexts; here the relevant requirement is to describe the sequence from tenant segment to physical network.
D:This statement can describe a per-flow ecmp behavior problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to set realistic expectations for multipath balancing; here the relevant requirement is to describe the sequence from tenant segment to physical network.
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.