Free Access to VMware.3V0-25.25.v2026-08-16.q20 with Valid Practice Test (Page 5)

Question 16

An administrator is enabling IPv6-to-IPv4 communication for workloads hosted in an NSX environment. The workloads use IPv6-only addressing, but the external systems they must reach are IPv4-only. To provide this translation service, the administrator decides to configure NAT64. Which two following characteristics about NAT64 are true? (Choose two.)

A.NAT64 is stateless and requires gateways to be deployed in active-standby mode.
B.NAT64 requires the Tier-1 gateway to be configured in active-standby mode.
C.NAT64 is supported on Tier-1 gateways only.
D.NAT64 is supported on Tier-0 and Tier-1 gateways.
E.NAT64 requires the Tier-1 gateway to be configured in active-active mode.

Question 17

An administrator has been tasked with providing a networking solution including a Source and Destination NAT for a single Tenant. The tenant is using Centralized Connectivity with a Tier-0 Gateway named Ten-A- Tier-0 supported by an Edge cluster in Active-Active mode. The NAT solution must be available for multiple subnets within the Tenant space. The administrator chooses to deploy a Tier-1 Gateway to implement the NAT solution. How would the administrator complete the task?

A.Change Ten-A-Tier-0 to Active-Standby to support the stateful NAT.
B.Create a new Tier-0 Gateway in Active-Standby mode and attach another Tier-1 Gateway.
C.Create a Tier-1 Gateway in Distributed Routing mode only and do not attach it to Ten-A-Tier-0.
D.Create a new Tier-1 Gateway in Active-Standby mode and attach it to Ten-A-Tier-0.

Correct Answer: D

Comprehensive and Detailed 250 to 350 words of Explanation From VMware Cloud Foundation (VCF) documents:
In aVMware Cloud Foundation (VCF)environment, the implementation of stateful services-such as Source NAT (SNAT) and Destination NAT (DNAT)-requires a specific architectural configuration within theNSXcomponent. This is because stateful services need a centralized point of processing (a Service Router or SR) to maintain the session state tables and ensure that return traffic is processed by the same node that initiated the session.
The scenario describes a provider-levelTier-0 Gatewayrunning inActive-Activemode. While Active-Active provides high-performance North-South throughput via ECMP (Equal Cost Multi-Pathing), it does not support stateful NAT services because asymmetric traffic flows would break the session tracking. Rather than changing the Tier-0 to Active-Standby (which would reduce overall throughput for the entire environment), the architecturally sound approach is to offload the stateful services to aTier-1 Gateway.
According to VCF design guides, when a Tier-1 Gateway is required to perform NAT for multiple subnets, it must be configured as aStateful Tier-1. This involves associating the Tier-1 with anEdge Clusterand setting its high-availability mode toActive-Standby. Once the Tier-1 is created in this mode, it creates a Service Router (SR) component on the selected Edge Nodes. By attaching this Active-Standby Tier-1 to the existing Active-Active Tier-0 (Ten-A-Tier-0), the tenant's subnets can enjoy the benefits of localized stateful NAT while the environment maintains high-performance, non-stateful routing at the Tier-0 layer.
Option A is inefficient as it impacts the entire Tier-0. Option B is redundant. Option C is incorrect because a
"Distributed Routing only" Tier-1 (one without an Edge Cluster association) cannot perform stateful NAT.
Therefore, creating anActive-Standby Tier-1and linking it to the provider Tier-0 is the verified VCF multi- tenant design pattern.

Question 18

An administrator encountered a failure with one of the NSX Managers in a VCF Fleet. The administrator has successfully re-deployed an NSX Manager from SFTP backups. However, after replacing the failed manager node, the new node joins successfully, but the cluster status remains "Degraded".
* The get cluster status command on the leader still shows the old UUID with state "REMOVED".
What is the command to resolve the issue?

A.detach node <new-uuid>
B.delete node <old-uuid>
C.detach node <old-uuid> then delete node <old-uuid>
D.detach node <old-uuid>

Question 19

An administrator has noticed that both the active and standby Global Managers have gone offline.
What is the correct sequence of events to restore the Global Managers?

Correct Answer:

Explanation:
* Step 1: Delete both the active and standby Global Managers. Ensure there are no Global Manager appliances up in any other clusters.
* Step 2: Deploy a new Global Manager with the same IP address/FQDN as the old active Global Manager.
* Step 3: Restore the active Global Manager from backup.
* Step 4: Deploy an additional new Global Manager on another site and onboard it to the restored Global Manager.
In aVMware Cloud Foundationmulti-site deployment usingNSX Federation, the Global Manager (GM) manages the global networking configuration across multiple sites. If the entire GM cluster (Active and Standby) fails, the following architectural principles apply:
* Cleanup (Step 1):Before initiating a restore, the environment must be "cleaned." If old, failed VMs remain in the inventory or on the hosts, they can cause IP address conflicts or UUID mismatches during the deployment of the new appliance. You must ensure the management plane is clear of the original failed nodes.
* Identity Consistency (Step 2):When restoring an NSX appliance (Local or Global) from backup, the new appliancemustbe deployed with the exact sameIP address and FQDNas the original active node.
This is critical because the existing Local Managers (LMs) at each site already have established thumbprints and communication channels tied to that specific identity.
* The Restore Operation (Step 3):Once the "seed" appliance is deployed, the restore process is triggered through the NSX Manager UI/API. This process re-populates the database with the global segments, firewall rules, and Tier-0/Tier-1 configurations.
* Restoring Redundancy (Step 4):The backup only contains the configuration of the cluster. It does not
"restore" the standby VM itself. High Availability (HA) must be manually re-established by deploying a second GM appliance at the secondary site and joining it to the newly restored Global Manager cluster to act as the standby.

Question 20

A sovereign cloud provider has a VMware Cloud Foundation (VCF) stretched Workload Domain across two data centers (AZ1 and AZ2), where site connectivity via Layer 3 is provided by the underlay. The following NSX details are included in the design:
* Each site must host its own local NSX Edge Cluster for availability zones.
* Tier-0 gateways must be configured in active/active mode with BGP ECMP to local top-of-rack switches.
* Inter-site Edge TEP traffic must not cross the inter-DC link.
* SDDC Manager is used to automate NSX deployment.
During deployment of the Edge Cluster for AZ2, the SDDC Manager workflow fails because the Edge transport nodes' TEP IPs are not reachable from the ESXi transport nodes. Which step ensures correct Edge Cluster deployment in multi-site stretched domains?

A.Disable the liveness check during Edge deployment in SDDC Manager.
B.Configure BGP neighbors before deploying the Edge Cluster.
C.Reuse the TEP IP pool from AZ1.
D.Create an AZ2-specific Edge TEP IP pool and map it to the AZ2 uplink profile before deploying the Edge Cluster.

Question 16

Question 17

Question 18

Question 19

Question 20

Download PDF File