3V0-25.25 Advanced VMware Cloud Foundation 9.0 Networking Practice Questions
Prepare for 3V0-25.25 with more than an answer.
- Exam fee
- $250 USD
- Time limit
- 135 minutes
- Questions on the exam
- 60
- Passing score
- 300 (scaled)
- Level
- Advanced Professional
- Valid for
- Not specified - follow VMware recertification policy
Domains covered on the exam 5
- IT Architectures, Technologies, Standards
- VMware Products and Solutions
- Plan and Design the VMware Solution25%
- Install, Configure, Administrate the VMware Solution55%
- Troubleshoot and Optimize the VMware Solution20%
- 1
A network engineer observes that traffic between two VMs on different overlay segments on the same host is being dropped. The Distributed Firewall (DFW) logs show 'PASS', but the traffic does not reach the destination. Which common configuration issue should be investigated first?
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Correct answer: C
If DFW permits the traffic but it fails to pass, especially between segments (routing involved) or across hosts, an MTU mismatch is a frequent culprit. Overlay traffic (Geneve) adds headers (approx 50 bytes). If the physical underlay MTU is not set to at least 1600 (recommended 1700 or 9000), packets will be dropped without fragmentation.
- 2
Which TWO actions are required to successfully deploy an NSX Edge Cluster in a VCF 9.0 environment using the new guided workflows? (Select TWO)
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Correct answer: B, C
Edge nodes require membership in the Overlay Transport Zone (for Geneve traffic from hosts) and the VLAN Transport Zone (for uplink traffic to physical routers) to function as gateways.
VCF 9.0 introduces a guided Edge deployment workflow directly within the vCenter UI, simplifying the process and removing the need to context switch between SDDC Manager and NSX Manager for this specific task.
- 3
True or False: In VCF 9.0, deploying a Transit Gateway requires the deployment of dedicated Edge Nodes.
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Correct answer: B
False. The Transit Gateway in VCF 9.0 enables a distributed connectivity model that connects workloads directly from the host to the physical fabric (Host-to-Fabric) using VDS VLANs. It does NOT require dedicated Edge Nodes, unlike the Centralized connectivity model using Tier-0 Gateways.
- 4
A Cloud Architect is designing a new VCF 9.0 Workload Domain for a financial institution. The requirements specify that a specific group of latency-sensitive trading applications requires direct host-to-fabric connectivity to minimize hop count and latency. The design must avoid routing traffic through centralized Edge nodes for these specific workloads while maintaining isolation. Which architectural component should the architect select to meet these requirements?
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Correct answer: B
In VCF 9.0, the NSX Transit Gateway enables a distributed connectivity model. It allows workloads to connect directly from the ESXi host to the physical fabric (host-to-fabric connectivity) using VDS VLAN-backed networking, bypassing the need for centralized Edge nodes and Service Routers (SRs) for routing. This reduces hops and latency, making it ideal for the scenario described.
- 5
An administrator is preparing to deploy a multi-site VCF 9.0 solution using NSX Federation. The design calls for a primary site in New York and a secondary site in London. Regarding the deployment of the Global Manager (GM), which statement correctly describes the required procedure?
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Correct answer: C
Unlike Local Managers which are lifecycle managed by SDDC Manager, the NSX Global Manager (GM) in a VCF Federation deployment is deployed manually as an appliance (OVA/OVF) directly onto vSphere. Once deployed, the Local Managers (managed by VCF) are then registered to this Global Manager.
- 6
A DevOps team requires a self-service networking environment where they can create their own subnets, define firewall rules, and configure load balancing without submitting tickets to the central IT team. The environment must be isolated but able to route traffic to other internal services. Which VCF 9.0 construct should the administrator provision for this team?
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Correct answer: A
In VCF 9.0, the Virtual Private Cloud (VPC) is the primary construct for self-service networking. It provides an isolated environment where tenants (via NSX Projects) can manage their own subnets, security policies, and services independently of the underlying infrastructure, mirroring public cloud consumption models.
