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Advanced VMware Cloud Foundation 9.0 Support Free Sample Questions

Description

Covers monitoring VMware vSAN and supported non-vSAN storage using VCF tools, and troubleshooting and resolving vSAN storage issues within a VMware Cloud Foundation deployment.

12 free sample questions150 in the full practice test

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3V0-13.26 Sample Questions

  1. Question 1

    Intermediate

    Troubleshoot and Optimize the VMware Solution · - Troubleshoot and resolve issues with VMware vSAN Storage

    A VCF Support Engineer is troubleshooting a 'Datastore not accessible' alert in a Workload Domain. The environment uses vSAN 9.0. Upon inspection using the vSphere Client, several VMs show their objects as 'Inaccessible'. The engineer runs esxcli vsan cluster get on one host and notices the 'Sub-Cluster Member Count' is lower than the total number of hosts.

    Which command should the engineer run next to identify which specific hosts have formed a partition?

    Answer and explanation

    Correct answer: D

    The esxcli vsan cluster list command provides detailed information about the cluster membership seen by the local host, including the UUIDs of all members in the current partition. This allows the engineer to identify exactly which hosts are communicating and which are isolated. esxcli vsan debug object list shows object states but not host partitioning details directly.

  2. Question 2

    Beginner

    Troubleshoot and Optimize the VMware Solution · - Identify the appropriate VCF tool/product to troubleshoot an issue in NSX

    A customer reports that a specific Tier-1 Gateway in an NSX environment within VCF is dropping traffic intermittently. The VCF Support Engineer decides to perform a packet walk to validate the datapath.

    Which tool in NSX Manager allows the engineer to inject a synthetic packet into the datapath and visualize its hop-by-hop handling through the logical switching and routing constructs?

    Answer and explanation

    Correct answer: B

    Traceflow is the dedicated NSX tool designed to inject synthetic packets into the network and trace their path through logical switches, gateways, and firewalls, reporting the outcome at each hop (e.g., dropped, forwarded, encapsulated).

  3. Question 3

    Intermediate

    Troubleshoot and Optimize the VMware Solution · - Monitor VCF Automation using VCF Operations

    An administrator is troubleshooting a failed VCF Automation deployment. The error log indicates that the 'Ebont' service is in a failed state. The administrator logs into the VCF Automation appliance CLI.

    Which command should be used to verify the status of all Kubernetes pods running the automation services?

    Answer and explanation

    Correct answer: C

    VCF Automation runs its services as Kubernetes pods within the 'prelude' namespace. The standard command to list these pods and their status is kubectl get pods -n prelude. While vracli commands exist, checking pod status directly provides the granular details needed for troubleshooting a specific service failure like 'Ebont'.

  4. Question 4

    Advanced

    Troubleshoot and Optimize the VMware Solution · - Diagnose and resolve Supervisor and VKS cluster provisioning, connectivity, or namespace errors

    A VCF environment has a vSphere Kubernetes Service (VKS) Supervisor Cluster configured across three zones. A developer reports that they cannot deploy a new Tanzu Kubernetes Grid (TKG) cluster. The error message is: '0/3 control plane nodes available'.

    Which component should the support engineer investigate first to determine if the Supervisor Control Plane VMs are healthy?

    Answer and explanation

    Correct answer: B

    The vCenter Server 'Namespaces' (or Workload Management) summary page provides the direct health status of the Supervisor Cluster, including the status of the Control Plane VMs. If the control plane is unhealthy, new TKG clusters cannot be provisioned. Checking this summary is the most direct initial troubleshooting step.

  5. Question 5

    IntermediateMultiple answers

    Troubleshoot and Optimize the VMware Solution · - Given a scenario, troubleshoot VCF Operations infrastructure configuration issues

    Select TWO common reasons why a VCF Operations Cloud Proxy might show as 'Offline' in the VCF Operations interface despite the VM being powered on and accessible via SSH.

    Answer and explanation

    Correct answers: C, D

    If the Cloud Proxy is not configured within the validity period of the OTP (usually 24 hours), the trust establishment fails, and it will appear offline or never connect.

    The Cloud Proxy initiates the connection to the VCF Operations cluster (or SaaS endpoint). If outbound HTTPS (Port 443) is blocked by a firewall, the proxy cannot register or send heartbeats.

  6. Question 6

    Advanced

    Troubleshoot and Optimize the VMware Solution · - Given a scenario, monitor VMware vSAN using tools in VCF

    A critical database VM in a VCF Workload Domain is experiencing high I/O latency. The underlying storage is vSAN. The support engineer wants to determine if the latency is introduced at the VM kernel level or the physical disk level.

    Which specific metric in the vSAN Performance Service should be analyzed to see the time spent in the ESXi storage stack versus the backend physical device?

    Answer and explanation

    Correct answer: C

    Comparing Frontend Latency (latency observed by the VM) with Backend Latency (latency at the disk group level) helps isolate the issue. High Backend Latency suggests physical disk contention or issues, while high Frontend Latency with low Backend Latency suggests queueing in the DOM owner or network layer.

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