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VMware 3V0-25.25 Practice Test 35

Question 340

An architect proposes the following step: configure and validate supported Tier-1 HA placement on redundant Edge nodes. The context is: A Tier-1 carries stateful NAT and needs recovery after losing an Edge node. What is the strongest technical reason for that decision?

  1. Tenant offboarding should clean scoped objects while leaving shared routing and provider services intact.
  2. The external interface enables IP adjacency between the gateway and physical fabric.
  3. SNAT replaces the source for matching outbound flows so a return path can address the translated endpoint.
  4. Stateful gateway services require healthy service-router availability and correctly handled failover.

Explanation

Correct Answer

D:

Stateful gateway services require healthy service-router availability and correctly handled failover. This explains the proposed decision in the current tier-1 service continuity situation. The intended outcome is to preserve the gateway's centralized stateful service during eligible node failover, and verification would show: A controlled Edge outage leaves a recoverable NAT service with expected routing restoration.

Incorrect Answers

A:

This statement can describe a tenant lifecycle cleanup problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to remove the retired tenant without affecting shared provider infrastructure; here the relevant requirement is to preserve the gateway's centralized stateful service during eligible node failover.

B:

This statement can describe a tier-0 uplink creation problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to establish the Tier-0 external service-router interface; here the relevant requirement is to preserve the gateway's centralized stateful service during eligible node failover.

C:

This statement can describe a tier-1 nat policy problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to translate eligible egress source addresses at the intended Tier-1 service boundary; here the relevant requirement is to preserve the gateway's centralized stateful service during eligible node failover.

Question 341

A change review examines the following situation: An application owner asks which dependencies make east-west connections between two tiers. Which practice would most directly undermine the requirement to observe and map actual application communication paths?

  1. looking solely at VM CPU utilization to decide which network endpoints communicate
  2. using a static topology diagram as a substitute for time-series health monitoring
  3. configuring a physical leaf VLAN directly on the VPC subnet to replace the logical transit path
  4. creating a Tier-1 with no northbound path while expecting internet reachability

Explanation

Correct Answer

A:

The anti-pattern, looking solely at VM CPU utilization to decide which network endpoints communicate, directly conflicts with the requirement to observe and map actual application communication paths. Network flow analytics can reveal connected workloads and their communication patterns. The safer action is to use VCF Operations for Networks flow analytics.

Incorrect Answers

B:

That practice primarily harms the distinct vcf operations health view activity, in which the goal is to monitor NSX health trends across the VCF deployment. Its failure mechanism is less direct for this specific network flow analysis review. Here the key requirement is to observe and map actual application communication paths.

C:

That practice primarily harms the distinct vpc transit gateway association activity, in which the goal is to join the VPC through its designated connectivity profile and Transit Gateway path. Its failure mechanism is less direct for this specific network flow analysis review. Here the key requirement is to observe and map actual application communication paths.

D:

That practice primarily harms the distinct tier-1 link to tier-0 activity, in which the goal is to connect application-facing logical routing to the enterprise external tier. Its failure mechanism is less direct for this specific network flow analysis review. Here the key requirement is to observe and map actual application communication paths.

Question 342

A reviewer must validate the intended NSX outcome. Situation: A shared workload segment is planned for two sites but the remote tunnel transport is absent. Which result most directly demonstrates that the team can prepare the data-plane prerequisites of a stretched overlay network?

  1. The team can create VPC subnets inside its project but cannot change unrelated infrastructure gateways.
  2. Test VMs on the stretched segment exchange traffic through working remote TEP paths.
  3. A recovery test restores global objects and reestablishes healthy Local Manager synchronization.
  4. Old credentials are rejected and authorized integrations authenticate with new stored secrets.

Explanation

Correct Answer

B:

Test VMs on the stretched segment exchange traffic through working remote TEP paths. This observation validates the specified stretched segment preparation outcome. Stretched data-plane communication depends on working local and remote overlay transport across sites.

Incorrect Answers

A:

This would validate project-scoped vpc creation rather than the needed stretched segment preparation result. NSX VPC enables scoped self-service networking with provider-defined connectivity and constraints. For the present case, the evidence must show that the team can prepare the data-plane prerequisites of a stretched overlay network.

C:

This would validate global backup recovery rather than the needed stretched segment preparation result. Recovery needs trustworthy backups of global policy and a procedure to restore management relationships. For the present case, the evidence must show that the team can prepare the data-plane prerequisites of a stretched overlay network.

D:

This would validate credential rotation rather than the needed stretched segment preparation result. Credential handling must address exposure without leaving broken or unknown access paths. For the present case, the evidence must show that the team can prepare the data-plane prerequisites of a stretched overlay network.

Question 343

A change review examines the following situation: A Project is retired, but stale VPCs and policies consume resources and confuse new tenants. Which practice would most directly undermine the requirement to remove the retired tenant without affecting shared provider infrastructure?

  1. changing a workload VM IP before checking the missing upstream VPC route
  2. placing corporate-only DNS servers exclusively in the default resolver list for all public names
  3. deleting the shared Tier-0 because the retiring Project once used its connection profile
  4. sharing a single tenant administrator identity among all departments

Explanation

Correct Answer

C:

The anti-pattern, deleting the shared Tier-0 because the retiring Project once used its connection profile, directly conflicts with the requirement to remove the retired tenant without affecting shared provider infrastructure. Tenant offboarding should clean scoped objects while leaving shared routing and provider services intact. The safer action is to inventory and decommission Project-owned resources in dependency order.

Incorrect Answers

A:

That practice primarily harms the distinct vpc troubleshooting order activity, in which the goal is to isolate VPC routing, advertisement and upstream return-path faults. Its failure mechanism is less direct for this specific tenant lifecycle cleanup review. Here the key requirement is to remove the retired tenant without affecting shared provider infrastructure.

B:

That practice primarily harms the distinct tier-1 dns forwarding activity, in which the goal is to forward DNS queries according to domain-specific policy. Its failure mechanism is less direct for this specific tenant lifecycle cleanup review. Here the key requirement is to remove the retired tenant without affecting shared provider infrastructure.

D:

That practice primarily harms the distinct project audit ownership activity, in which the goal is to retain accountable change records across tenant scopes. Its failure mechanism is less direct for this specific tenant lifecycle cleanup review. Here the key requirement is to remove the retired tenant without affecting shared provider infrastructure.

Question 344

A change review examines the following situation: Two departments assign the same subnet to routable segments in one shared routing context. Which practice would most directly undermine the requirement to avoid ambiguous route selection between workload segments?

  1. treating every private subnet as a publicly routable external prefix
  2. allowing all members of a segment unrestricted access to every other tier
  3. assuming the segment subnet field alone creates a lease server
  4. reusing the same connected subnet behind one Tier-1 without route isolation

Explanation

Correct Answer

D:

The anti-pattern, reusing the same connected subnet behind one Tier-1 without route isolation, directly conflicts with the requirement to avoid ambiguous route selection between workload segments. Overlapping directly connected networks in one route context can produce ambiguous traffic delivery. The safer action is to allocate distinct nonoverlapping IP subnets in the shared routing domain.

Incorrect Answers

A:

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 segment ip subnet plan review. Here the key requirement is to avoid ambiguous route selection between workload segments.

B:

That practice primarily harms the distinct segment security placement activity, in which the goal is to ensure connecting a VM to a segment does not bypass microsegmentation policy. Its failure mechanism is less direct for this specific segment ip subnet plan review. Here the key requirement is to avoid ambiguous route selection between workload segments.

C:

That practice primarily harms the distinct tier-1 dhcp service activity, in which the goal is to provide tenant IP lease service through supported NSX DHCP options. Its failure mechanism is less direct for this specific segment ip subnet plan review. Here the key requirement is to avoid ambiguous route selection between workload segments.

Question 345

A change review examines the following situation: VPC public subnets are routable within NSX but absent from upstream peer route tables. Which practice would most directly undermine the requirement to advertise Transit Gateway routes required for VPC external access?

  1. adding unrelated Tier-1 segment route settings while the VPC TGW route source is disabled
  2. assuming that identical segment names across sites eliminate the need for remote tunnel connectivity
  3. assuming ECMP asymmetry is always harmless for every NAT and firewall service mode
  4. assuming a gateway firewall is the only place any same-host VM packet can be blocked

Explanation

Correct Answer

A:

The anti-pattern, adding unrelated Tier-1 segment route settings while the VPC TGW route source is disabled, directly conflicts with the requirement to advertise Transit Gateway routes required for VPC external access. VCF 9 VPC routes may depend on the explicit TGW static redistribution class. The safer action is to enable the supported Transit Gateway Static redistribution source on the Tier-0.

Incorrect Answers

B:

That practice primarily harms the distinct federation stretched-segment path activity, in which the goal is to identify cross-site encapsulated Layer-2 forwarding and its policy controls. Its failure mechanism is less direct for this specific transit gateway route missing review. Here the key requirement is to advertise Transit Gateway routes required for VPC external access.

C:

That practice primarily harms the distinct asymmetric return flow activity, in which the goal is to make the gateway return path compatible with NAT and connection state. Its failure mechanism is less direct for this specific transit gateway route missing review. Here the key requirement is to advertise Transit Gateway routes required for VPC external access.

D:

That practice primarily harms the distinct dfw evaluation point activity, in which the goal is to place the distributed firewall decision correctly in the flow path. Its failure mechanism is less direct for this specific transit gateway route missing review. Here the key requirement is to advertise Transit Gateway routes required for VPC external access.

Question 346

An architect proposes the following step: verify remote TEP reachability and cross-site transport prerequisites. The context is: A stretched overlay segment fails only between sites although local guest connectivity works. What is the strongest technical reason for that decision?

  1. Global Manager configuration and recovery artifacts are required to restore global policy coordination after a failure.
  2. Stretched-segment traffic requires a functional intersite tunnel data path; local same-site forwarding alone is insufficient.
  3. Being managed by vCenter does not by itself create NSX transport-node participation.
  4. Stateful services require consistent flow-state processing; not every HA and ECMP combination provides that without specific support.

Explanation

Correct Answer

B:

Stretched-segment traffic requires a functional intersite tunnel data path; local same-site forwarding alone is insufficient. This explains the proposed decision in the current remote tunnel reachability situation. The intended outcome is to restore intersite overlay transport between Federation locations, and verification would show: Remote tunnel endpoints are reachable and cross-site encapsulated frames traverse the intersite network.

Incorrect Answers

A:

This statement can describe a federation recovery planning problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to recover centralized policy management without erasing local state; here the relevant requirement is to restore intersite overlay transport between Federation locations.

C:

This statement can describe a transport node eligibility problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to turn ordinary hypervisor hosts into participating NSX data-plane nodes; here the relevant requirement is to restore intersite overlay transport between Federation locations.

D:

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 restore intersite overlay transport between Federation locations.

Question 347

A change review examines the following situation: A newly created overlay segment is available on some hosts but not on another prepared cluster. Which practice would most directly undermine the requirement to make that cluster eligible for the required logical overlay segment?

  1. increasing only application VM MTU while leaving TEP-path encapsulation constrained
  2. expecting automatic IP assignment on a segment with no DHCP service or relay
  3. recreating the segment with a different name rather than fixing transport-zone eligibility
  4. assuming the existence of a static route bypasses External Connection advertisement filters

Explanation

Correct Answer

C:

The anti-pattern, recreating the segment with a different name rather than fixing transport-zone eligibility, directly conflicts with the requirement to make that cluster eligible for the required logical overlay segment. Transport-zone membership controls where a segment can be realized. The safer action is to add the correct overlay transport zone to participating transport nodes.

Incorrect Answers

A:

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 overlay zone membership review. Here the key requirement is to make that cluster eligible for the required logical overlay segment.

B:

That practice primarily harms the distinct dhcp scope association activity, in which the goal is to make the correct DHCP function available to segment members. Its failure mechanism is less direct for this specific overlay zone membership review. Here the key requirement is to make that cluster eligible for the required logical overlay segment.

D:

That practice primarily harms the distinct vpc external ip block policy activity, in which the goal is to permit the intended VPC external network through the provider's outbound advertisement controls. Its failure mechanism is less direct for this specific overlay zone membership review. Here the key requirement is to make that cluster eligible for the required logical overlay segment.

Question 348

An architect proposes the following step: configure domain-specific and default DNS forwarding zones. The context is: A shared gateway should resolve internal company zones using private DNS and other names using public recursive servers. What is the strongest technical reason for that decision?

  1. Logical network membership alone is not a substitute for workload-level access control.
  2. DHCP relay carries broadcast-derived discovery to a remote DHCP service across L3.
  3. An Edge appliance must be prepared as a transport node before it can provide intended gateway data-plane services.
  4. A DNS forwarder can select named zone resolvers instead of sending every query to one list.

Explanation

Correct Answer

D:

A DNS forwarder can select named zone resolvers instead of sending every query to one list. This explains the proposed decision in the current dns forwarder domain split situation. The intended outcome is to route DNS queries to the appropriate upstream DNS authority, and verification would show: Internal domain queries reach corporate DNS; unrelated domains reach the default resolvers.

Incorrect Answers

A:

This statement can describe a segment security placement problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to ensure connecting a VM to a segment does not bypass microsegmentation policy; here the relevant requirement is to route DNS queries to the appropriate upstream DNS authority.

B:

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 route DNS queries to the appropriate upstream DNS authority.

C:

This statement can describe a edge transport preparation problem but is not the technical cause addressed by the proposed step. In that other situation the objective is to complete the NSX transport-node realization of the Edge; here the relevant requirement is to route DNS queries to the appropriate upstream DNS authority.

Question 349

A change review examines the following situation: An automation job should update only one tenant's security rules, but currently uses a full administrator token. Which practice would most directly undermine the requirement to restrict automated NSX changes to the intended object boundary?

  1. embedding a global administrator credential in every application pipeline
  2. deleting the shared Tier-0 because the retiring Project once used its connection profile
  3. editing production objects manually without recording intended state or change history
  4. ignoring NTP because all Manager IP addresses still respond to ping

Explanation

Correct Answer

A:

The anti-pattern, embedding a global administrator credential in every application pipeline, directly conflicts with the requirement to restrict automated NSX changes to the intended object boundary. Automation credentials must follow least privilege and supported policy resource paths. The safer action is to use scoped identity and validated API permissions for the tenant policy operation.

Incorrect Answers

B:

That practice primarily harms the distinct tenant lifecycle cleanup activity, in which the goal is to remove the retired tenant without affecting shared provider infrastructure. Its failure mechanism is less direct for this specific network policy api scope review. Here the key requirement is to restrict automated NSX changes to the intended object boundary.

C:

That practice primarily harms the distinct infrastructure as code activity, in which the goal is to define NSX networking changes as reviewable version-controlled configuration. Its failure mechanism is less direct for this specific network policy api scope review. Here the key requirement is to restrict automated NSX changes to the intended object boundary.

D:

That practice primarily harms the distinct ntp drift activity, in which the goal is to restore trustworthy event timelines and time-sensitive authentication. Its failure mechanism is less direct for this specific network policy api scope review. Here the key requirement is to restrict automated NSX changes to the intended object boundary.

Question 350

A change review examines the following situation: Several application backends need a managed virtual service and health-based placement. Which practice would most directly undermine the requirement to provide a supported VCF application load-balancing integration?

  1. placing a Tier-1 entirely on host distributed routing while expecting Edge-only services
  2. treating a Tier-1 route advertisement as an application-layer health-aware load balancer
  3. using a broad allow-any rule before the sensitive finance subnet policies
  4. continuing to reuse a shared leaked administrator password in production scripts

Explanation

Correct Answer

B:

The anti-pattern, treating a Tier-1 route advertisement as an application-layer health-aware load balancer, directly conflicts with the requirement to provide a supported VCF application load-balancing integration. Avi can supply application load-balancing capabilities integrated with VMware networking design. The safer action is to integrate VMware Avi Load Balancer where supported and configure the virtual service and backend pool.

Incorrect Answers

A:

That practice primarily harms the distinct service router allocation activity, in which the goal is to make a service-capable Tier-1 instance operational. Its failure mechanism is less direct for this specific load balancing integration review. Here the key requirement is to provide a supported VCF application load-balancing integration.

C:

That practice primarily harms the distinct stateful gateway policy activity, in which the goal is to permit only authorized new sessions while retaining state-aware replies. Its failure mechanism is less direct for this specific load balancing integration review. Here the key requirement is to provide a supported VCF application load-balancing integration.

D:

That practice primarily harms the distinct credential rotation activity, in which the goal is to rotate secrets while preserving authorized NSX integrations. Its failure mechanism is less direct for this specific load balancing integration review. Here the key requirement is to provide a supported VCF application load-balancing integration.

Advanced VMware Cloud Foundation 9.0 Networking (3V0-25.25) Practice Tests