VMware 3V0-25.25 Practice Test 17
Question 160
A change review examines the following situation: Local east-west application traffic repeatedly crosses a congested Edge even when distributed routing is supported. Which practice would most directly undermine the requirement to reduce centralized transit for traffic that can route locally?
- making a costly network topology change solely from subjective slowness reports
- placing the only forwarding data plane on the Global Manager virtual machines
- relying only on a single local site snapshot as a complete Global Manager recovery plan
- forcing all internal routes through a centralized service router for no technical reason
Explanation
Correct Answer
D:The anti-pattern, forcing all internal routes through a centralized service router for no technical reason, directly conflicts with the requirement to reduce centralized transit for traffic that can route locally. Distributed routing processes local/interhost flows in transport nodes, reducing unnecessary Edge service load. The safer action is to keep eligible east-west routing in the distributed logical router.
Incorrect Answers
A:That practice primarily harms the distinct latency baseline activity, in which the goal is to identify whether networking datapath is the actual bottleneck. Its failure mechanism is less direct for this specific distributed routing efficiency review. Here the key requirement is to reduce centralized transit for traffic that can route locally.
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 distributed routing efficiency review. Here the key requirement is to reduce centralized transit for traffic that can route locally.
C: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 distributed routing efficiency review. Here the key requirement is to reduce centralized transit for traffic that can route locally.
Question 161
A reviewer must validate the intended NSX outcome. Situation: An operator needs application-flow topology across an NSX and physical fabric deployment. Which result most directly demonstrates that the team can analyze dependencies and network paths with broader topology context?
- A topology/path view shows the source, logical hops and physical-network context of the application flow.
- Unhealthy backends stop receiving new eligible traffic through the virtual service.
- The developer can add approved subnets but cannot alter the shared external connection profile.
- Disk usage stabilizes and service alerts clear without loss of required central log retention.
Explanation
Correct Answer
A:A topology/path view shows the source, logical hops and physical-network context of the application flow. This observation validates the specified vcf operations for networks outcome. The network analytics tool combines flow information and topology useful for diagnosing cross-layer paths.
Incorrect Answers
B:This would validate avi load-balancer service rather than the needed vcf operations for networks result. Avi adds application-aware balancing and backend health handling beyond ordinary IP routing. For the present case, the evidence must show that the team can analyze dependencies and network paths with broader topology context.
C:This would validate vpc delegated permissions rather than the needed vcf operations for networks result. Provider connectivity objects govern shared external routing and must not become uncontrolled tenant settings. For the present case, the evidence must show that the team can analyze dependencies and network paths with broader topology context.
D:This would validate edge health operations rather than the needed vcf operations for networks result. Edge resource pressure can impair gateway operation independently of route-policy correctness. For the present case, the evidence must show that the team can analyze dependencies and network paths with broader topology context.
Question 162
An architect proposes the following step: configure supported Tier-0 active-active ECMP with matching upstream routing. The context is: High-volume external traffic must use several equal-cost next hops rather than a single saturated gateway path. What is the strongest technical reason for that decision?
- The distributed firewall evaluates relevant flows at the host data plane rather than relying on traffic crossing a physical perimeter.
- ECMP selects among equal-cost routes, typically per flow, improving aggregate path capacity and redundancy.
- Global groups can match protected resources across sites while a central policy expresses common decisions.
- Throughput gains do not provide high availability if every service node fails with the same host.
Explanation
Correct Answer
B:ECMP selects among equal-cost routes, typically per flow, improving aggregate path capacity and redundancy. This explains the proposed decision in the current ecmp load spread situation. The intended outcome is to distribute eligible north-south flows across redundant paths, and verification would show: Observed independent flows use multiple live next hops while each flow stays consistent with its path selection.
Incorrect Answers
A: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 distribute eligible north-south flows across redundant paths.
C:This statement can describe a global security objects problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to apply common multi-site security semantics; here the relevant requirement is to distribute eligible north-south flows across redundant paths.
D:This statement can describe a capacity versus redundancy problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to design both service headroom and independent failure capacity; here the relevant requirement is to distribute eligible north-south flows across redundant paths.
Question 163
A reviewer must validate the intended NSX outcome. Situation: Two workloads on separate NSX segments reside on the same transport host and use the same Tier-1. Which result most directly demonstrates that the team can avoid an unnecessary centralized hop for ordinary east-west routing?
- Change reports identify the site, rule and deviation from the approved baseline.
- The host becomes a transport node in the correct zone and eligible segments can be realized there.
- Trace evidence shows routing at the participating transport host without an Edge service hop.
- BGP and path observations show eligible external flows using multiple healthy Edge paths.
Explanation
Correct Answer
C:Trace evidence shows routing at the participating transport host without an Edge service hop. This observation validates the specified distributed forwarding outcome. Distributed logical routing can process eligible east-west flows at the hypervisor instead of sending them to an Edge.
Incorrect Answers
A:This would validate policy drift monitoring rather than the needed distributed forwarding 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 avoid an unnecessary centralized hop for ordinary east-west routing.
B:This would validate transport zones rather than the needed distributed forwarding result. Transport zones determine which logical networks are available to participating transport nodes. For the present case, the evidence must show that the team can avoid an unnecessary centralized hop for ordinary east-west routing.
D:This would validate active-active transit capacity rather than the needed distributed forwarding result. Active-active service-router routing permits multiple Edge paths when configuration and service constraints allow. For the present case, the evidence must show that the team can avoid an unnecessary centralized hop for ordinary east-west routing.
Question 164
A change review examines the following situation: Three application segments need a shared logical first-hop router and controlled northbound reachability. Which practice would most directly undermine the requirement to provide workload-segment routing behind an external connectivity tier?
- storing all backup files under identical names with no source-instance metadata
- placing every redundant Edge and upstream link on the same physical server
- forcing all local inter-subnet traffic through an Edge appliance
- connecting every application subnet directly to an external fabric router unnecessarily
Explanation
Correct Answer
D:The anti-pattern, connecting every application subnet directly to an external fabric router unnecessarily, directly conflicts with the requirement to provide workload-segment routing behind an external connectivity tier. Tier-1 provides application-facing logical routing and a route toward a Tier-0 for external networks. The safer action is to connect the segments to a Tier-1 gateway linked toward the Tier-0.
Incorrect Answers
A:That practice primarily harms the distinct backup consistency activity, in which the goal is to recover each fleet networking control plane from documented backups. Its failure mechanism is less direct for this specific tier-1 workload routing review. Here the key requirement is to provide workload-segment routing behind an external connectivity tier.
B:That practice primarily harms the distinct failure-domain diversity activity, in which the goal is to avoid correlated failures for a business-critical north-south path. Its failure mechanism is less direct for this specific tier-1 workload routing review. Here the key requirement is to provide workload-segment routing behind an external connectivity tier.
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 tier-1 workload routing review. Here the key requirement is to provide workload-segment routing behind an external connectivity tier.
Question 165
A change review examines the following situation: Two ESXi transport nodes require consistent uplink mapping and tunneling policy. Which practice would most directly undermine the requirement to apply repeatable physical-uplink mapping during NSX preparation?
- hand-configuring inconsistent uplink and transport VLAN settings on every host
- assuming a reachable TEP implies every tenant workload may communicate without controls
- building a topology where every application packet is required to traverse the Manager API endpoint
- merging all site Manager credentials into an unaudited shared administrator login
Explanation
Correct Answer
A:The anti-pattern, hand-configuring inconsistent uplink and transport VLAN settings on every host, directly conflicts with the requirement to apply repeatable physical-uplink mapping during NSX preparation. Uplink profiles capture NIC teaming, transport VLAN, and uplink placement decisions for the prepared node. The safer action is to define and use the applicable uplink profile in transport-node configuration.
Incorrect Answers
B:That practice primarily harms the distinct underlay versus overlay security activity, in which the goal is to distinguish fabric reachability from application access control. Its failure mechanism is less direct for this specific uplink profiles review. Here the key requirement is to apply repeatable physical-uplink mapping during NSX preparation.
C:That practice primarily harms the distinct control and data plane separation activity, in which the goal is to keep management-plane availability distinct from workload forwarding paths. Its failure mechanism is less direct for this specific uplink profiles review. Here the key requirement is to apply repeatable physical-uplink mapping during NSX preparation.
D:That practice primarily harms the distinct central visibility across instances activity, in which the goal is to aggregate monitoring while retaining local control-plane ownership. Its failure mechanism is less direct for this specific uplink profiles review. Here the key requirement is to apply repeatable physical-uplink mapping during NSX preparation.
Question 166
An architect proposes the following step: trace the VM vNICs through local NSX logical switching and relevant host security checks. The context is: Two application VMs share one logical segment and one ESXi host and exchange unicast frames. What is the strongest technical reason for that decision?
- A stretched segment relies on remote TEP transport and applicable distributed policy at each site.
- Same-segment local unicast switching need not traverse Tier-1, Tier-0 or an Edge service router.
- Successful direct-IP traffic suggests the initial failure is name resolution rather than generic external routing.
- A stateful HA service may direct a response to the Edge that owns its connection state.
Explanation
Correct Answer
B:Same-segment local unicast switching need not traverse Tier-1, Tier-0 or an Edge service router. This explains the proposed decision in the current same-host same-segment packet walk situation. The intended outcome is to describe local same-segment forwarding without unnecessary routing hops, and verification would show: A path trace shows the host dataplane forwarding directly between the relevant vNIC ports.
Incorrect Answers
A:This statement can describe a federation stretched-segment path problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to identify cross-site encapsulated Layer-2 forwarding and its policy controls; here the relevant requirement is to describe local same-segment forwarding without unnecessary routing hops.
C:This statement can describe a dns versus transport fault problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to distinguish name resolution failure from the routed packet path; here the relevant requirement is to describe local same-segment forwarding without unnecessary routing hops.
D: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 local same-segment forwarding without unnecessary routing hops.
Question 167
An architect proposes the following step: refine Project/group scope and workload membership in the policy. The context is: A network security rule for one subsidiary unexpectedly matches another tenant's VMs. What is the strongest technical reason for that decision?
- Role scopes keep troubleshooting visibility separate from potentially disruptive provider actions.
- A VLAN-backed NSX network depends on the underlying tagged L2 connectivity.
- Logical grouping must reflect the intended tenant boundary to prevent cross-tenant policy effects.
- Central gateway resources may saturate even when distributed host networking is healthy.
Explanation
Correct Answer
C:Logical grouping must reflect the intended tenant boundary to prevent cross-tenant policy effects. This explains the proposed decision in the current tenant policy scoping situation. The intended outcome is to restrict the rule to the intended tenant resources, and verification would show: Only the target subsidiary's workloads match the corrected rule.
Incorrect Answers
A:This statement can describe a role separation problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to apply least privilege to tenant visibility and configuration; here the relevant requirement is to restrict the rule to the intended tenant resources.
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 restrict the rule to the intended tenant resources.
D:This statement can describe a edge capacity indicators problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to detect bottlenecks on centralized Edge services; here the relevant requirement is to restrict the rule to the intended tenant resources.
Question 168
An architect proposes the following step: place Edge nodes across appropriate compute and physical-network fault domains. The context is: An HA Edge cluster has both nodes hosted on the same ESXi server. What is the strongest technical reason for that decision?
- Avi adds application-aware balancing and backend health handling beyond ordinary IP routing.
- Management reachability does not establish external dataplane interface readiness.
- DHCP relay carries broadcast-derived discovery to a remote DHCP service across L3.
- A redundant virtual cluster cannot survive a common physical host failure if every member shares that host.
Explanation
Correct Answer
D:A redundant virtual cluster cannot survive a common physical host failure if every member shares that host. This explains the proposed decision in the current edge failure-domain placement situation. The intended outcome is to protect gateway forwarding from a single host loss, and verification would show: A single-host outage leaves a healthy forwarding Edge in service.
Incorrect Answers
A:This statement can describe a avi load-balancer service problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to implement a managed application load-balancing layer; here the relevant requirement is to protect gateway forwarding from a single host loss.
B:This statement can describe a edge interface mapping problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to connect gateway uplinks to the intended physical switching path; here the relevant requirement is to protect gateway forwarding from a single host loss.
C:This statement can describe a dhcp relay boundary problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to forward guest DHCP requests to the authorized remote server; here the relevant requirement is to protect gateway forwarding from a single host loss.
Question 169
An architect proposes the following step: evaluate supported active-active stateful Tier-0 capability and its constraints. The context is: A design team believes all Tier-0 active-active gateways are necessarily stateless. What is the strongest technical reason for that decision?
- Modern NSX supports stateful services on eligible active-active Tier-0 designs, subject to documented feature limitations.
- BGP state and prefix advertisements expose session or policy faults not visible in an ICMP test.
- Management service degradation is separate from existing data-plane forwarding and requires cluster-focused diagnosis.
- HA needs enough remaining capacity after a failure, not only multiple available devices.
Explanation
Correct Answer
A:Modern NSX supports stateful services on eligible active-active Tier-0 designs, subject to documented feature limitations. This explains the proposed decision in the current stateful active-active support situation. The intended outcome is to select a valid HA architecture for required stateful services, and verification would show: A supported deployment preserves session behavior while using the chosen active-active service mode.
Incorrect Answers
B:This statement can describe a bgp diagnostic view problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to inspect the control-plane state and routes of the external peer; here the relevant requirement is to select a valid HA architecture for required stateful services.
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 select a valid HA architecture for required stateful services.
D: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 select a valid HA architecture for required stateful services.
Question 170
A private subnet uses SNAT for outbound partner access and receives a reply to the translated address. The engineering team needs to explain the stateful source and return address transformations. What action best addresses the immediate requirement?
- walk the local transport path through remote tunnel endpoints to the destination site's host
- trace outbound gateway SNAT and supported reverse translation on the returning session
- renew the server identity certificate and update dependent trust stores
- choose active-active stateless or active-standby for the VRF parent according to service needs
Explanation
Correct Answer
B:SNAT maps source addresses outbound, and the corresponding state restores the internal destination on replies. The selected action, trace outbound gateway SNAT and supported reverse translation on the returning session, directly supports the specified goal to explain the stateful source and return address transformations. A useful confirmation is: Captures show the translated address outside and the correct original workload destination inside.
Incorrect Answers
A:Walk the local transport path through remote tunnel endpoints to the destination site's host would address the separate case of federation stretched-segment path, where the objective is to identify cross-site encapsulated Layer-2 forwarding and its policy controls. A stretched segment relies on remote TEP transport and applicable distributed policy at each site. Here the requirement is instead to explain the stateful source and return address transformations; that step does not directly satisfy it.
C:Renew the server identity certificate and update dependent trust stores would address the separate case of certificate expiration fault, where the objective is to repair management-plane trust without disabling authentication protections. An expired or untrusted management certificate blocks TLS clients independently of network IP reachability. Here the requirement is instead to explain the stateful source and return address transformations; that step does not directly satisfy it.
D:Choose active-active stateless or active-standby for the VRF parent according to service needs would address the separate case of vrf and stateful incompatibility, where the objective is to avoid an unsupported Tier-0 architecture. Broadcom documents that VRF child gateways are not supported under active-active stateful Tier-0 parents. Here the requirement is instead to explain the stateful source and return address transformations; that step does not directly satisfy it.