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| Certification Vendor: | VMware |
|---|---|
| Exam Name: | Advanced VMware Cloud Foundation 9.0 Networking |
| Exam Number: | 3V0-25.25 |
| Exam Price: | $250 USD |
| Exam Format: | Multiple choice, Simulation-style questions, Scenario-based items |
| Related Certifications: | VMware Certified Advanced Professional - VMware Cloud Foundation Networking (VCAP-VCF Networking) |
| Passing Score: | 300 / 500 |
| Available Languages: | English |
| Exam Duration: | 135 minutes |
| Real Exam Qty: | 60 |
| Sample Questions: | VMware 3V0-25.25 Sample Questions |
| Exam Way: | Pearson VUE (Online or Test Center) |
| Official Syllabus URL: | https://www.vmware.com/learning/certification/vcap-vcf-networking.html |
Advanced VMware Cloud Foundation 9.0 Networking (3V0-25.25) Practice exams (desktop and web-based) are designed solely to help you get your Advanced VMware Cloud Foundation 9.0 Networking (3V0-25.25) certification on your first try. Our VMware 3V0-25.25 mock test will help you understand the Advanced VMware Cloud Foundation 9.0 Networking (3V0-25.25) exam inside out and you will get better marks overall. It is only because you have practical experience of the Advanced VMware Cloud Foundation 9.0 Networking (3V0-25.25) exam even before the exam itself.
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NEW QUESTION # 44
When attempting to deploy or expand an edge cluster from an administrator encounters a failure: "Failed to validate the BGP Route Distribution". Prior to calling support, the administrator attempts to troubleshoot the issue. How should the administrator troubleshoot this issue?
Answer: A
Explanation:
Comprehensive and Detailed 250 to 350 words of Explanation From VMware Cloud Foundation (VCF) documents:
InVMware Cloud Foundation (VCF), theSDDC Managerautomates the deployment and expansion ofNSX Edge Clusters. As part of the automated workflow, particularly in VCF 4.x, 5.x, and 9.0, a "Verify BGP Route Distribution" task is executed. This task is a validation check designed to ensure that the newly deployed or expanded Edge nodes are successfully peering with the physical Top-of-Rack (ToR) switches and, more importantly, are actually receiving routes.
According to VMware/Broadcom technical documentation (specificallyKB 388351), the workflow expects to see at least one route (often the default route or specific physical prefixes) learned via BGP from the northbound peer. If the Edge nodes establish a BGP session but the physical switches are not advertising any routes (or are only advertising routes that the Edge ignores due to filters), the SDDC Manager validation fails with the error "Failed to validate the BGP Route Distribution".
The verified troubleshooting step is tolog into the CLI of the Edge nodeidentified in the failure. Using the command get route bgp from within the Tier-0 Service Router (SR) VRF context allows the administrator to see the current Routing Information Base (RIB). If the table is empty or only contains internal "ISR" (Inter- SR) routes, it confirms that the physical network is not providing the expected advertisements. This allows the administrator to correct the BGP advertisement settings on the physical ToR switches-such as enabling default-originate-and then simply "Resume" the task in SDDC Manager without needing to redeploy the entire cluster.
NEW QUESTION # 45
An administrator is configuring Border Gateway Protocol (BGP) routing on a Tier-0 Gateway to optimize north-south traffic flow between the NSX environment and multiple upstream physical routers. The environment includes two external connections that advertise overlapping routes to the same destination networks. To ensure predictable and efficient routing behavior, the administrator decides to manipulate specific BGP attributes on outbound advertisements and inbound route updates. What are two valid BGP Attributes that can be used to influence the route path traffic will take? (Choose two.)
Answer: B,D
Explanation:
Comprehensive and Detailed 250 to 350 words of Explanation From VMware Cloud Foundation (VCF) documents:
In aVMware Cloud Foundation (VCF)architecture, theTier-0 Gatewayis the primary point of integration between the virtualized network and the physical world. When dealing with multiple upstream routers (multi- homing), administrators must influence the BGP path selection process to ensure traffic follows the desired path and avoids suboptimal routing or asymmetric flows.
AS-Path Prependis a common technique used to influenceinbound traffic(traffic coming from the physical network into the NSX environment). By repeating its own Autonomous System (AS) number multiple times in the BGP advertisement, the Tier-0 Gateway makes a specific path look "longer" and therefore less desirable to the upstream physical routers. Since BGP prefers the shortest AS-Path, the routers will favor the alternate link that does not have the prepended AS numbers. This is a critical tool in VCF designs to ensure that a primary link is utilized unless a failure occurs.
MED (Multi-Exit Discriminator)is an attribute that suggests to an adjacent external AS which path to take among multiple entry points to the same AS. Like AS-Path Prepend, it influences inbound traffic. A lower MED value is preferred over a higher one. In a VCF environment with multiple Edge Nodes or multiple Tier-
0 uplinks, setting different MED values allows the administrator to prioritize specific entry points for traffic entering the SDDC.
BFD (Bidirectional Forwarding Detection)is not a BGP attribute; it is a detection protocol used to provide fast failure detection of the link between BGP neighbors. While it triggers faster convergence, it does not influence path selection based on attributes.Costis an OSPF attribute, not a native BGP attribute. Therefore, in the context of NSX Tier-0 BGP configuration, AS-Path Prepend and MED are the verified methods for path manipulation.
NEW QUESTION # 46
An administrator is troubleshooting east-west network performance between several virtual machines connected to the same logical segment. The administrator inspects the internal forwarding tables used by ESXi and notices that different tables exist for MAC and IP mapping. Which table on an ESXi host is used to determine the location of a particular workload for frame forwarding?
Answer: A
Explanation:
Comprehensive and Detailed 250 to 350 words of Explanation From VMware Cloud Foundation (VCF) documents:
In the context ofVMware Cloud Foundation (VCF)networking, understanding how an ESXi host (acting as a Transport Node) handles East-West traffic is fundamental. East-West traffic refers to communication between workloads within the same data center, often on the same logical segment.
When a Virtual Machine sends a frame to another VM on the same logical segment, the ESXi host's virtual switch must determine the "location" of the destination MAC address to performframe forwarding. The MAC Table(also known as the Forwarding Table or L2 Table) is the primary structure used for this decision.
For each logical segment, the host maintains a MAC table that maps the MAC addresses of virtual machines to their specific "locations." If the destination VM is residing on thesame host, the MAC table points the frame toward a specific internal port (vUUID) associated with that VM's vNIC. If the destination VM is on adifferent host(in an overlay environment), the MAC table entry for that remote MAC address will point to theTunnel End Point (TEP)IP of the remote ESXi host. While the TEP table (Option C) contains the list of known Tunnel Endpoints and the ARP table (Option A) maps IP addresses to MAC addresses, neither is the primary table used for the final frame forwardingdecision.
TheMAC Tableis the authoritative source for Layer 2 forwarding. In an NSX-managed VCF environment, these tables are dynamically populated and synchronized via theLocal Control Plane (LCP), which receives updates from the Central Control Plane. This ensures that even as VMs move via vMotion, the MAC table remains updated across all transport nodes, allowing for seamless East-West connectivity without the need for traditional MAC learning (flooding) in the physical fabric.
NEW QUESTION # 47
An administrator is tasked to configure NSX Federation between separate VMware Cloud Foundation (VCF) Fleets. Which requirement must all sites meet before being added to a Global Manager (GM) for NSX Federation?
Answer: C
Explanation:
Comprehensive and Detailed 250 to 350 words of Explanation From VMware Cloud Foundation (VCF) documents:
NSX Federation, a core component of large-scale VCF deployments across multiple sites or "fleets," introduces a hierarchical management model where aGlobal Manager (GM)orchestrates security policies and networking objects across multipleLocal Managers (LMs).
To ensure stability and compatibility in the communication between the Global Manager and the Local Managers, VMware documentation specifies strictversion parityrequirements. When onboarding a site into a Federation, the Local Manager at that site must be running thesame NSX version and buildas the other sites in the Federation and must be compatible with the Global Manager's version. Discrepancies in versions can lead to synchronization failures, as the API schemas and internal database structures for Global Objects (like Global Segments or Groups) may differ between builds.
While Federation allows for geographic and administrative separation, the underlying software-defined networking stack must be synchronized. Option A is incorrect; in fact, VTEP/TEP VLANs and IP poolsshould be unique to each site to avoid IP conflicts in the transport network, though they must have Layer 3 reachability to one another. Option B is incorrect; unique BGP AS numbers are often preferred for multi-site routing to prevent loops. Option C is also incorrect, as Federation is specifically designed to link different VCF instances (sites) together into a single manageable entity.
In aVCF 5.x or 9.0context, the SDDC Manager helps maintain this requirement by ensuring that the "Bill of Materials" (BOM) is consistent across sites intended for Federation. Before the GM can successfully register and "push" configuration to an LM, the handshake process validates the build version to prevent the corruption of the global intended state.
NEW QUESTION # 48
An administrator implements route leaking between the Tier-0 gateways to enhance east/west communication because the physical L3 devices are oversubscribed.
Where should route-maps be configured based on the architecture observed in the diagram?
Answer:
Explanation:
Explanation:
The administrator should click on theblue box representing the logical link between the two Tier-0 Gateways.
In the multi-tenant architecture ofVMware Cloud Foundation (VCF) 9.0, networking is structured hierarchically with VPC Gateways, Transit Gateways, and Tier-0 Gateways. Under normal conditions, traffic between isolated divisions (such as Division A and Division B) that need to communicate might be routed
"North" all the way to thePhysical L3 Devices(the physical core routers) before being routed back down.
However, if these physical devices are oversubscribed or reaching their throughput limits, this creates a performance bottleneck.
To optimize this flow, NSX allows forRoute Leakingat the Tier-0 layer. By establishing a logical peering or connection directly between twoTier-0 Gatewayswithin the virtual fabric, administrators can exchange routing information (prefixes) between the two environments without the traffic ever leaving the SDDC.
To control exactly which networks are shared and to prevent routing loops or unauthorized access,Route- Mapsmust be applied at this inter-gateway connection point. These route-maps define the "Permit" or "Deny" statements for specific IP prefixes being "leaked" from one routing table to another. By clicking the highlighted link between the Tier-0 Gateways, the administrator is targeting the specific control plane interface where these prefix exchanges occur. This configuration ensures that East-West traffic between Division A and Division B is handled locally by theNSX Edge Nodes, effectively bypassing the oversubscribed physical L3 devices and significantly reducing latency and physical network congestion.
NEW QUESTION # 49
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